{"entity":{"edinet_code":"E01225","sec_code":"5401","name_ja":"日本製鉄株式会社","name_en":"NIPPON STEEL CORPORATION","industry":"鉄鋼","industry_en":"Iron & Steel"},"names_note":"English company names are as filed: each company's own annual report states its English name on the cover page. For a company that files no annual report, EDINET's filer registry is used instead. The as-filed Japanese name is always returned alongside.","filing":{"doc_id":"S100YF8E","filer_name":"日本製鉄株式会社","filer_name_en":"NIPPON STEEL CORPORATION","period_end":"2026-03-31","filed_date":"2026-06-23","sha256":"9e90170ab9cfcbee610f0227459fef653d7e96d93fb322942079fee73cd24ef7","status":"clean"},"basis":{"measurement":"carrying_amount","entity_scope":"parent_only","share_scope":"both","trust_included":"unknown","as_of":"2026-03-31","period_type":"annual","labels":{"measurement":"Balance-sheet carrying amount. Under Japanese GAAP listed equities are carried at market with the valuation difference in other comprehensive income, so carrying amount and acquisition cost diverge enormously on positions bought decades ago.","entity_scope":"The reporting company itself (提出会社) — the holding company, excluding the group holders it names separately.","share_scope":"Listed and unlisted shares together.","trust_included":"The filing does not state whether retirement-benefit-trust shares are included. Never guessed — shares contributed to such a trust leave the holder's balance sheet while the settlor normally keeps the right to instruct the vote.","period_type":"From an annual securities report (有価証券報告書). The policy shareholding table appears only in the annual report."},"not_comparable":"Figures are balance-sheet CARRYING AMOUNT at fiscal year end, from the annual securities report. They are NOT comparable with the acquisition-cost or book-value-reduction figures quoted in press coverage and IR presentations, and NOT comparable with interim (half-year) figures, which this product does not hold. Always state the basis with the number, and use check_claim before setting one of our figures against a published one."},"basis_note":"The basis every yen figure on this response is on. entity_scope is read from the filing's own disclosing entities, not assumed: scale_entities and flows each carry their own entity_scope and share_scope, and a figure quoted for one entity is not the group figure.","holdings":[{"holder_table":"reporting","held_name_raw":"日鉄鉱業㈱","held_name_en":"Nittetsu Mining Co., Ltd.","held_sec_code":"1515","match_status":"matched","shares":8129600,"book_value_yen":20177000000,"prior_shares":1625920,"prior_book_value_yen":10698000000,"purpose_ja":"同社は、当社の鋼材生産に不可欠な石灰石の安定調達先であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":10.321256995439633,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3648348198916254,"pct_of_holder_assets":0.1376275418242235,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":5.0,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱三菱UFJフィナンシャル・グループ","held_name_en":"Mitsubishi UFJ Financial Group, Inc.","held_sec_code":"8306","match_status":"matched","shares":7613990,"book_value_yen":19796000000,"prior_shares":7613990,"prior_book_value_yen":15311000000,"purpose_ja":"同社は、当社事業戦略に応じた資金の安定的かつ機動的な供給元であり、金融取引の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.06740222401357397,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.35794568541282734,"pct_of_holder_assets":0.13502873657889322,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":["3"],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"大同特殊鋼㈱","held_name_en":"Daido Steel Co., Ltd.","held_sec_code":"5471","match_status":"matched","shares":10862200,"book_value_yen":19687000000,"prior_shares":10862200,"prior_book_value_yen":12926000000,"purpose_ja":"同社は、当社とJ/V共同運営を行う等の関係にあり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":5.42888379391323,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3559747781734861,"pct_of_holder_assets":0.1342852463643499,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"山九㈱","held_name_en":"SANKYU INC.","held_sec_code":"9065","match_status":"matched","shares":2061280,"book_value_yen":17980000000,"prior_shares":2061280,"prior_book_value_yen":12639000000,"purpose_ja":"同社は、当社製鉄所構内における物流・作業請負会社であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":4.112070191183694,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.32510928590233557,"pct_of_holder_assets":0.12264178034393311,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"三井物産㈱","held_name_en":"MITSUI & CO., LTD.","held_sec_code":"8031","match_status":"matched","shares":2898500,"book_value_yen":17272000000,"prior_shares":2898500,"prior_book_value_yen":8114000000,"purpose_ja":"同社は、当社の鋼材販売取引やJ/V共同運営等における主要なパートナーであり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.10179508526346508,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3123074297055139,"pct_of_holder_assets":0.1178125044549729,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"住友商事㈱","held_name_en":"SUMITOMO CORPORATION","held_sec_code":"8053","match_status":"matched","shares":2810805,"book_value_yen":16246000000,"prior_shares":3373005,"prior_book_value_yen":11373000000,"purpose_ja":"同社は、当社の鋼材販売取引やJ/V共同運営等における主要なパートナーであり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.23567518519290492,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.29375558725079776,"pct_of_holder_assets":0.11081414702266615,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱名村造船所","held_name_en":"Namura Shipbuilding Co.,Ltd.","held_sec_code":"7014","match_status":"matched","shares":3777656,"book_value_yen":15771000000,"prior_shares":5027656,"prior_book_value_yen":11488000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に厚板事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":5.438156135388215,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.28516677129954027,"pct_of_holder_assets":0.10757416672993154,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"エア・ウォーター㈱","held_name_en":"AIR WATER INC.","held_sec_code":"4088","match_status":"matched","shares":6900000,"book_value_yen":14659000000,"prior_shares":6900000,"prior_book_value_yen":13027000000,"purpose_ja":"同社は、当社と当社製鉄所構内における酸素・窒素等の供給を行うオンサイトプラントを共同運営しており、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":3.0137972029052986,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.26505990111470173,"pct_of_holder_assets":0.09998920233936126,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱オカムラ","held_name_en":"OKAMURA CORPORATION","held_sec_code":"7994","match_status":"matched","shares":5313988,"book_value_yen":13098000000,"prior_shares":5313988,"prior_book_value_yen":10452000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に薄板事業全般に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":5.628185925561343,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.23683433964120085,"pct_of_holder_assets":0.08934160394576396,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"愛知製鋼㈱","held_name_en":"AICHI STEEL CORPORATION","held_sec_code":"5482","match_status":"matched","shares":3977680,"book_value_yen":11173000000,"prior_shares":994420,"prior_book_value_yen":6970000000,"purpose_ja":"同社は、当社とJ/V共同運営を行う等の関係にあり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":6.191248064884768,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.20202703289136792,"pct_of_holder_assets":0.07621115749626055,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":4.0,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"ユニプレス㈱","held_name_en":"UNIPRES CORPORATION","held_sec_code":"5949","match_status":"matched","shares":6692000,"book_value_yen":8706000000,"prior_shares":6692000,"prior_book_value_yen":7133000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に自動車用鋼板事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":15.020557985896701,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1574194350982054,"pct_of_holder_assets":0.05938372300746839,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"大和ハウス工業㈱","held_name_en":"DAIWA HOUSE INDUSTRY CO., LTD.","held_sec_code":"1925","match_status":"matched","shares":1754200,"book_value_yen":8627000000,"prior_shares":1846200,"prior_book_value_yen":9116000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に薄板事業全般に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.283233709780567,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.15599097939262788,"pct_of_holder_assets":0.05884486312720306,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"東邦チタニウム㈱","held_name_en":"TOHO TITANIUM COMPANY, LIMITED","held_sec_code":null,"match_status":"matched","shares":3500000,"book_value_yen":8200000000,"prior_shares":3500000,"prior_book_value_yen":3916000000,"purpose_ja":"同社は、当社のチタン素材の安定調達先であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":4.9176566494937415,"pct_unavailable":null,"pct_basis_period_end":"2025-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1482700858953922,"pct_of_holder_assets":0.055932291369313214,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱三井住友フィナンシャルグループ","held_name_en":"Sumitomo Mitsui Financial Group, Inc.","held_sec_code":"8316","match_status":"matched","shares":1578546,"book_value_yen":7902000000,"prior_shares":1578546,"prior_book_value_yen":5990000000,"purpose_ja":"同社は、当社事業戦略に応じた資金の安定的かつ機動的な供給元であり、金融取引の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.04135090705188428,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.14288173399334014,"pct_of_holder_assets":0.05389963004881866,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":["3"],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"岡谷鋼機㈱","held_name_en":"ＯＫＡＹＡ＆ＣＯ．，ＬＴＤ．","held_sec_code":"7485","match_status":"matched","shares":869000,"book_value_yen":7847000000,"prior_shares":869000,"prior_book_value_yen":6065000000,"purpose_ja":"同社は、当社の鋼材販売取引やJ/V共同運営等における主要なパートナーであり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":4.52328528969326,"pct_unavailable":null,"pct_basis_period_end":"2026-02-28","pct_share_classes":1,"pct_of_holder_equity":0.1418872395147735,"pct_of_holder_assets":0.0535244744359757,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"三和ホールディングス㈱","held_name_en":"Sanwa Holdings Corporation","held_sec_code":"5929","match_status":"matched","shares":2068000,"book_value_yen":7314000000,"prior_shares":2468000,"prior_book_value_yen":11769000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に薄板事業全般に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.9853033524136597,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.132249683931573,"pct_of_holder_assets":0.049888875496970346,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"マックス㈱","held_name_en":"MAX CO., LTD.","held_sec_code":"6454","match_status":"matched","shares":1044950,"book_value_yen":6708000000,"prior_shares":1044950,"prior_book_value_yen":4435000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に棒鋼及び線材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":2.324491080044933,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.12129216294954767,"pct_of_holder_assets":0.04575534274455525,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱横河ブリッジホールディングス","held_name_en":"Yokogawa Bridge Holdings Corp.","held_sec_code":"5911","match_status":"matched","shares":1987303,"book_value_yen":5890000000,"prior_shares":1987303,"prior_book_value_yen":4988000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に厚板事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":4.9984730194791,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.10650131779559269,"pct_of_holder_assets":0.040175755629909125,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"阪和興業㈱","held_name_en":"HANWA CO., LTD.","held_sec_code":"8078","match_status":"matched","shares":600000,"book_value_yen":4659000000,"prior_shares":600000,"prior_book_value_yen":2934000000,"purpose_ja":"同社は、当社の鋼材販売取引やJ/V共同運営等における主要なパートナーであり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":1.542268172674401,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08424272319349174,"pct_of_holder_assets":0.03177909091336954,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"東京製綱㈱","held_name_en":"TOKYO ROPE MFG. CO., LTD.","held_sec_code":"5981","match_status":"matched","shares":2473935,"book_value_yen":4646000000,"prior_shares":3236535,"prior_book_value_yen":3951000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に棒鋼及び線材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。2020年度において、同社の企業価値向上へのコミットメントを高め、同社の企業価値の回復・向上に寄与することを目的に、公開買付けによる同社株式の追加取得を実施致しましたが、本公開買付けの終了後、公正取引委員会から当社と同社との間に結合関係が成立するとの指摘を受け、同委員会との協議を踏まえ、当社として同社株式の一部売却を進めています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":15.922716031043548,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08400766086219416,"pct_of_holder_assets":0.031690417768515756,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":["tender offer"],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"鴻池運輸㈱","held_name_en":"Konoike Transport Co.,Ltd.","held_sec_code":"9025","match_status":"matched","shares":1591118,"book_value_yen":4606000000,"prior_shares":1591118,"prior_book_value_yen":4270000000,"purpose_ja":"同社は、当社製鉄所構内における物流・作業請負会社であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":2.9964759461090154,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08328439215050933,"pct_of_holder_assets":0.031417577322811786,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱大阪チタニウムテクノロジーズ","held_name_en":"OSAKA Titanium technologies Co.,Ltd.","held_sec_code":"5726","match_status":"matched","shares":1807000,"book_value_yen":4490000000,"prior_shares":1807000,"prior_book_value_yen":3476000000,"purpose_ja":"同社は、当社のチタン素材の安定調達先であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":4.910539588677769,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08118691288662329,"pct_of_holder_assets":0.030626340030270285,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"高周波熱錬㈱","held_name_en":"Neturen Co., Ltd.","held_sec_code":"5976","match_status":"matched","shares":3101800,"book_value_yen":3895000000,"prior_shares":3101800,"prior_book_value_yen":3002000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に棒鋼及び線材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":9.5133231916773,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0704282908003113,"pct_of_holder_assets":0.026567838400423777,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"東洋製罐グループホールディングス㈱","held_name_en":"Toyo Seikan Group Holdings, Ltd.","held_sec_code":"5901","match_status":"matched","shares":892000,"book_value_yen":3155000000,"prior_shares":892000,"prior_book_value_yen":2180000000,"purpose_ja":"同社は、当社の主要な顧客であり、主にブリキ事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.5913614999346122,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.05704781963414175,"pct_of_holder_assets":0.02152029015490039,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"PT CITRATUBINDO Tbk","held_name_en":null,"held_sec_code":null,"match_status":"foreign","shares":55816880,"book_value_yen":3095000000,"prior_shares":55816880,"prior_book_value_yen":1020000000,"purpose_ja":"同社は、当社のインドネシア市場での油井管販売等における主要なパートナーであり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":0.05596291656661449,"pct_of_holder_assets":0.021111029486344437,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"伊藤忠商事㈱","held_name_en":"ITOCHU Corporation","held_sec_code":"8001","match_status":"matched","shares":1403500,"book_value_yen":2771000000,"prior_shares":280700,"prior_book_value_yen":1937000000,"purpose_ja":"同社は、当社の鋼材販売取引やJ/V共同運営等における主要なパートナーであり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":0.020055222895747786,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.05010444000196729,"pct_of_holder_assets":0.018901021876142305,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":5.0,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱みずほフィナンシャルグループ","held_name_en":"Mizuho Financial Group, Inc.","held_sec_code":"8411","match_status":"matched","shares":445424,"book_value_yen":2711000000,"prior_shares":445424,"prior_book_value_yen":1804000000,"purpose_ja":"同社は、当社事業戦略に応じた資金の安定的かつ機動的な供給元であり、金融取引の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.018241668404917175,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04901953693444003,"pct_of_holder_assets":0.018491761207586357,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":["3"],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"Steel StripsWheels Limited","held_name_en":null,"held_sec_code":null,"match_status":"foreign","shares":8500000,"book_value_yen":2477000000,"prior_shares":8500000,"prior_book_value_yen":2669000000,"purpose_ja":"同社は、当社グループのホイール向け部品における重要な安定調達先であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":0.04478841497108372,"pct_of_holder_assets":0.01689564460021815,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"東プレ㈱","held_name_en":"Topre Corporation","held_sec_code":"5975","match_status":"matched","shares":994000,"book_value_yen":2351000000,"prior_shares":994000,"prior_book_value_yen":1869000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に自動車用鋼板事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":2.004370738090771,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04251011852927647,"pct_of_holder_assets":0.016036197196250653,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"日本コンクリート工業㈱","held_name_en":"NIPPON CONCRETE INDUSTRIES CO., LTD.","held_sec_code":"5269","match_status":"matched","shares":6940000,"book_value_yen":2179000000,"prior_shares":6940000,"prior_book_value_yen":2373000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に棒鋼及び線材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":12.770656020871153,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03940006306903166,"pct_of_holder_assets":0.014862983279723596,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"UsinasSiderúrgicasde MinasGeraisS.A.-USIMINAS","held_name_en":null,"held_sec_code":null,"match_status":"foreign","shares":9865358,"book_value_yen":2020000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"同社に関する株主間協定に基づき、Ternium Investments S.à r.l.（以下「テル二ウム」という。）等と協業を行ってきましたが、当該契約の対象となる全株式を2026年２月10日付でテル二ウムに譲渡したことをもって、当該契約は当社について終了し、同社は当事業年度末時点で当社の持分法適用会社ではなくなりました。当該契約終了後も、当社は当該契約の対象外である同社株式を保有していましたが、本有価証券報告書提出日現在、当該株式については売却済みです。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":0.03652506994008442,"pct_of_holder_assets":0.013778442508050328,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"電源開発㈱","held_name_en":"Electric Power Development Co., Ltd.","held_sec_code":"9513","match_status":"matched","shares":446500,"book_value_yen":1933000000,"prior_shares":446500,"prior_book_value_yen":1130000000,"purpose_ja":"同社は、当社の電力事業において提携関係にあり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.2532129404572464,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03495196049216989,"pct_of_holder_assets":0.0131850145386442,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"川田テクノロジーズ㈱","held_name_en":"KAWADA TECHNOLOGIES, INC.","held_sec_code":"3443","match_status":"matched","shares":280425,"book_value_yen":1281000000,"prior_shares":280425,"prior_book_value_yen":813000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に建築・土木建材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":1.6079959127057624,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.023162680491707,"pct_of_holder_assets":0.00873771527366954,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"ミネベアミツミ㈱","held_name_en":"MINEBEA MITSUMI Inc.","held_sec_code":"6479","match_status":"matched","shares":500000,"book_value_yen":1267000000,"prior_shares":500000,"prior_book_value_yen":1086000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に棒鋼及び線材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.1243960243368979,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02290953644261731,"pct_of_holder_assets":0.008642221117673151,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱不動テトラ","held_name_en":"Fudo Tetra Corporation","held_sec_code":"1813","match_status":"matched","shares":406252,"book_value_yen":1197000000,"prior_shares":406252,"prior_book_value_yen":903000000,"purpose_ja":"同社は、当社の顧客であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":2.6558108331968118,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.021643816197168837,"pct_of_holder_assets":0.008164750337691208,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"三井住友トラストグループ㈱","held_name_en":"Sumitomo Mitsui Trust Group, Inc.","held_sec_code":"8309","match_status":"matched","shares":238716,"book_value_yen":1170000000,"prior_shares":238716,"prior_book_value_yen":888000000,"purpose_ja":"同社は、当社事業戦略に応じた資金の安定的かつ機動的な供給元であり、金融取引の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.03418839259988779,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02115560981678157,"pct_of_holder_assets":0.007980583036841031,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":["3"],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"宮地エンジニアリンググループ㈱","held_name_en":"MIYAJI ENGINEERING GROUP,INC.","held_sec_code":"3431","match_status":"matched","shares":631200,"book_value_yen":1088000000,"prior_shares":631200,"prior_book_value_yen":1126000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に建築・土木建材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":2.38017881206452,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.019672908957827646,"pct_of_holder_assets":0.0074212601231479,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":["3"],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"西日本旅客鉄道㈱","held_name_en":"West Japan Railway Company","held_sec_code":"9021","match_status":"matched","shares":270000,"book_value_yen":844000000,"prior_shares":270000,"prior_book_value_yen":787000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に軌条及び鉄道車両品事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":0.05940305212881838,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.015260969816550124,"pct_of_holder_assets":0.005756933404353701,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"丸藤シートパイル㈱","held_name_en":"MARUFUJI SHEET PILING CO.,LTD.","held_sec_code":"8046","match_status":"matched","shares":165770,"book_value_yen":842000000,"prior_shares":165770,"prior_book_value_yen":462000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に建築・土木建材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":4.807017543859649,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.015224806380965883,"pct_of_holder_assets":0.005743291382068503,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"新報国マテリアル㈱","held_name_en":"Shinhokoku Material Corp.","held_sec_code":"5542","match_status":"matched","shares":1017800,"book_value_yen":802000000,"prior_shares":1017800,"prior_book_value_yen":704000000,"purpose_ja":"同社は、当社鋼管事業において、製鉄製造設備部品における重要な安定調達先であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":15.289628650402596,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.014501537669281042,"pct_of_holder_assets":0.005470450936364536,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱日阪製作所","held_name_en":"HISAKA WORKS, LTD.","held_sec_code":"6247","match_status":"matched","shares":500000,"book_value_yen":766000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"同社は、当社の主要な顧客であり、主にチタン事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":1.9015745036890546,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.013850595828764686,"pct_of_holder_assets":0.005224894535230966,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱奥村組","held_name_en":"ＯＫＵＭＵＲＡ ＣＯＲＰＯＲＡＴＩＯＮ","held_sec_code":"1833","match_status":"matched","shares":102751,"book_value_yen":649000000,"prior_shares":102751,"prior_book_value_yen":436000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に建築・土木建材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":0.28432222916641187,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.01173503484708653,"pct_of_holder_assets":0.004426836231546862,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"日本冶金工業㈱","held_name_en":"Nippon Yakin Kogyo Co.,Ltd.","held_sec_code":"5480","match_status":"matched","shares":127050,"book_value_yen":588000000,"prior_shares":127050,"prior_book_value_yen":528000000,"purpose_ja":"同社は、当社のステンレス事業に対する製造委託元であり、取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":0.917458818880631,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.010632050061767147,"pct_of_holder_assets":0.004010754551848314,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"京成電鉄㈱","held_name_en":"Keisei Electric Railway Co.,Ltd.","held_sec_code":"9009","match_status":"matched","shares":481500,"book_value_yen":565000000,"prior_shares":481500,"prior_book_value_yen":648000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に軌条及び鉄道車両品事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":0.09903375653518669,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.010216170552548365,"pct_of_holder_assets":0.0038538712955685324,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"九州旅客鉄道㈱","held_name_en":"Kyushu Railway Company","held_sec_code":"9142","match_status":"matched","shares":135400,"book_value_yen":509000000,"prior_shares":135400,"prior_book_value_yen":494000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に軌条及び鉄道車両品事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":0.0875532739686787,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.009203594356189589,"pct_of_holder_assets":0.0034718946715829786,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"モリテック スチール㈱","held_name_en":"MOLITEC STEEL CO., LTD．","held_sec_code":"5986","match_status":"matched","shares":2244166,"book_value_yen":504000000,"prior_shares":2244166,"prior_book_value_yen":392000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に自動車用鋼板事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":10.016647203939696,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.009113185767228985,"pct_of_holder_assets":0.0034377896158699827,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱ＵＥＸ","held_name_en":"ＵＥＸ，ＬＴＤ.","held_sec_code":"9888","match_status":"matched","shares":696000,"book_value_yen":496000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"同社は、当社の主要な顧客であり、主にステンレス事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":6.316076047007577,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.008968532024892017,"pct_of_holder_assets":0.0033832215267291894,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"POSCO-Thainox","held_name_en":null,"held_sec_code":null,"match_status":"foreign","shares":202127100,"book_value_yen":451000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"同社は、当社とJ/V共同運営を行う等の関係にあり、事業活動の円滑な推進を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":0.00815485472424657,"pct_of_holder_assets":0.0030762760253122265,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"三菱製鋼㈱","held_name_en":"Mitsubishi Steel Mfg.Co.,Ltd.","held_sec_code":"5632","match_status":"matched","shares":226000,"book_value_yen":402000000,"prior_shares":226000,"prior_book_value_yen":368000000,"purpose_ja":"同社は、当社と当社製鉄所構内において銑鉄等の供給を共同運営しており、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":1.464056000012438,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.007268850552432642,"pct_of_holder_assets":0.0027420464793248673,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"イワブチ㈱","held_name_en":"IWABUCHI CORPORATION","held_sec_code":"5983","match_status":"matched","shares":32000,"book_value_yen":395000000,"prior_shares":32000,"prior_book_value_yen":201000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に薄板事業全般に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":3.0721966205837172,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.007142278527887795,"pct_of_holder_assets":0.002694299401326673,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱高田工業所","held_name_en":"TAKADA CORPORATION","held_sec_code":"1966","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":220100,"prior_book_value_yen":326000000,"purpose_ja":"同社は、当社製鉄所構内における整備作業請負会社であり、事業上の関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"瀧上工業㈱","held_name_en":"The Takigami Steel Construction Co.,Ltd.","held_sec_code":"5918","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":42900,"prior_book_value_yen":313000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に建築・土木建材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"岡部㈱","held_name_en":"OKABE CO., LTD.","held_sec_code":"5959","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":364000,"prior_book_value_yen":310000000,"purpose_ja":"同社は、当社の主要な顧客であり、主に棒鋼及び線材事業に関する営業上の取引関係の維持・強化を目的として、同社株式を保有しています。当該相手先との個別取引に関する定量的な保有効果の記載は困難であるものの、保有目的が適切か、保有に伴う便益やリスクが資本コストに見合っているか等を具体的に精査し、株式保有の合理性を確認しています。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱シンニッタン","held_name_en":"SNT CORPORATION","held_sec_code":null,"match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":2577600,"prior_book_value_yen":1036000000,"purpose_ja":"当事業年度末日において保有していません。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5530448000000,"holder_total_assets_yen":14660583000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"holder_name":"株式会社みずほフィナンシャルグループ","holder_name_en":"Mizuho Financial Group, Inc.","holder_sec_code":"8411","doc_id":"S100YF8Y","period_end":"2026-03-31","holder_table":"largest","shares":55233330,"book_value_yen":31808000000,"prior_shares":11046666,"prior_book_value_yen":35294000000,"purpose_ja":"発行会社との金融分野を中心とした総合的な取引関係を維持強化するため。株式分割により株式数増加。","reciprocal":"有","pct_outstanding":1.0565694537776877,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2789223677183838,"pct_of_holder_assets":0.01052408535597014,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":11403890000000,"holder_total_assets_yen":302240042000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社三井住友フィナンシャルグループ","holder_name_en":"Sumitomo Mitsui Financial Group, Inc.","holder_sec_code":"8316","doc_id":"S100YERK","period_end":"2026-03-31","holder_table":"largest","shares":51264835,"book_value_yen":29523000000,"prior_shares":10252967,"prior_book_value_yen":32758000000,"purpose_ja":"主に預金・融資・為替等の金融関連の取引関係の維持・強化のため保有しております。株式分割により株式数が増加しております。","reciprocal":"有","pct_outstanding":0.9806553165263309,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.18529299678707478,"pct_of_holder_assets":0.008986909713519765,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":15933144000000,"holder_total_assets_yen":328511145000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社三菱ＵＦＪフィナンシャル・グループ","holder_name_en":"Mitsubishi UFJ Financial Group, Inc.","holder_sec_code":"8306","doc_id":"S100YJQO","period_end":"2026-03-31","holder_table":"largest","shares":40385905,"book_value_yen":23258000000,"prior_shares":8077181,"prior_book_value_yen":25806000000,"purpose_ja":"発行会社グループとの、主に金融取引(預金・貸出・為替等)における総合的な取引関係維持・拡大のために保有しており、株式分割により株式数が増加","reciprocal":"有","pct_outstanding":0.7725500813760022,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.09795254006123276,"pct_of_holder_assets":0.005387143957337118,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":23744152000000,"holder_total_assets_yen":431731548000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"住友商事株式会社","holder_name_en":"SUMITOMO CORPORATION","holder_sec_code":"8053","doc_id":"S100YARD","period_end":"2026-03-31","holder_table":"reporting","shares":25370955,"book_value_yen":14611000000,"prior_shares":6089011,"prior_book_value_yen":19454000000,"purpose_ja":"主に鉄鋼グループの同社との取引関係の維持・強化による中長期的な収益の拡大等を目的として保有しております。当社グループは同社と様々な鉄鋼製品関連及び鉄鋼原料関連の取引を行っており、関連する事業投資も共同で実施しております。なお、株式分割のため株数が増加しております。","reciprocal":"有","pct_outstanding":0.4853260896304513,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3156708735231622,"pct_of_holder_assets":0.10713182207392133,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":4628555000000,"holder_total_assets_yen":13638338000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東京海上ホールディングス株式会社","holder_name_en":"Tokio Marine Holdings, Inc.","holder_sec_code":"8766","doc_id":"S100YLS8","period_end":"2026-03-31","holder_table":"largest","shares":25171730,"book_value_yen":14496000000,"prior_shares":5034346,"prior_book_value_yen":16084000000,"purpose_ja":"保険事業における顧客企業との長期的かつ安定的な保険取引関係の維持および強化を図り、当社グループの企業価値を高めることを目的として、保有してきたものです。現在は、当社グループのリスクポートフォリオを見直し、社会課題解決や成長分野等に対して資本を振り向けるため、売却方針に則り保有をゼロにすることをめざしています。（注）3","reciprocal":"有","pct_outstanding":0.48151507462503956,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2656126690793395,"pct_of_holder_assets":0.04535394284577219,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5457571000000,"holder_total_assets_yen":31961940000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日鉄鉱業株式会社","holder_name_en":"Nittetsu Mining Co., Ltd.","holder_sec_code":"1515","doc_id":"S100YI8I","period_end":"2026-03-31","holder_table":"reporting","shares":17691913,"book_value_yen":10188000000,"prior_shares":3534268,"prior_book_value_yen":11291000000,"purpose_ja":"当社グループの鉱石部門の事業活動の円滑化及び売上の拡大を図るため同社株式を保有しております。当事業年度において、事業関係のより一層の強化のため、取引先持株会を通じて20,573株購入したことから、保有株式が20,573株増加しております。 [取引：石灰石等の販売]","reciprocal":"有","pct_outstanding":0.338432154184663,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":6.077961126821061,"pct_of_holder_assets":3.2820896099377603,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":167622000000,"holder_total_assets_yen":310412000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ＭＳ＆ＡＤインシュアランスグループホールディングス株式会社","holder_name_en":"MS&AD Insurance Group Holdings, Inc.","holder_sec_code":"8725","doc_id":"S100YNCJ","period_end":"2026-03-31","holder_table":"largest","shares":14647150,"book_value_yen":8435000000,"prior_shares":2929430,"prior_book_value_yen":9359000000,"purpose_ja":"保険取引先との関係の維持・強化を目的として安定保有していたが、保有方針については②a.(a)に記載のとおり株式分割により株式数が増加","reciprocal":"無","pct_outstanding":0.28018827173556,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.17481358053859578,"pct_of_holder_assets":0.029450977564709664,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":4825140000000,"holder_total_assets_yen":28640815000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"岡谷鋼機株式会社","holder_name_en":"ＯＫＡＹＡ＆ＣＯ．，ＬＴＤ．","holder_sec_code":"7485","doc_id":"S100Y5YH","period_end":"2026-02-28","holder_table":"reporting","shares":13093385,"book_value_yen":8327000000,"prior_shares":2618677,"prior_book_value_yen":8717000000,"purpose_ja":"主に鉄鋼セグメントにおける鉄鋼取引関係の維持・強化株式分割による株式数の増加","reciprocal":"有","pct_outstanding":0.2504659892414774,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.6085226394683976,"pct_of_holder_assets":0.8317318641101757,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":517680000000,"holder_total_assets_yen":1001164000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"三井物産株式会社","holder_name_en":"MITSUI & CO., LTD.","holder_sec_code":"8031","doc_id":"S100YAVT","period_end":"2026-03-31","holder_table":"reporting","shares":12299770,"book_value_yen":7083000000,"prior_shares":2459954,"prior_book_value_yen":7859000000,"purpose_ja":"主として鉄鋼製品セグメントにおいて、鉄鋼関連事業に関する事業機会の創出や取引・協業関係の構築・維持・強化を目的として保有しています。なお、株式分割により株式数が増加しています。","reciprocal":"有","pct_outstanding":0.2352847686440631,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08078474918975737,"pct_of_holder_assets":0.03401767632039301,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":8767744000000,"holder_total_assets_yen":20821528000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東海旅客鉄道株式会社","holder_name_en":"Central Japan Railway Company","holder_sec_code":"9022","doc_id":"S100YD7H","period_end":"2026-03-31","holder_table":"reporting","shares":11269500,"book_value_yen":6490000000,"prior_shares":2253900,"prior_book_value_yen":7201000000,"purpose_ja":"当該会社は、鉄道用のレールや鉄道車両用の車輪・車軸等、当社の鉄道事業の運営に不可欠な重要資材の調達先です。同社との連携の維持・強化を通じた、中長期的な資材の安定調達及びこれによる鉄道事業の安全かつ安定的運営、技術力の維持・向上を目的として、同社株式を保有しています。","reciprocal":"有","pct_outstanding":0.21557652705979619,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.12634740552708576,"pct_of_holder_assets":0.059671828846851564,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5136631000000,"holder_total_assets_yen":10876154000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"阪和興業株式会社","holder_name_en":"HANWA CO., LTD.","holder_sec_code":"8078","doc_id":"S100YED6","period_end":"2026-03-31","holder_table":"reporting","shares":9113870,"book_value_yen":5248000000,"prior_shares":1822774,"prior_book_value_yen":5823000000,"purpose_ja":"様々な鉄鋼製品関連及び鉄鋼原料関連の取引を行う主要な仕入先及び販売先であると共に、JV共同運営などにおけるパートナーであり、事業活動推進の円滑化を目的として、同社株式を保有しております。なお、株式分割により株式数が増加しております。","reciprocal":"有","pct_outstanding":0.17434104819863033,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.212146409177944,"pct_of_holder_assets":0.4327669210381788,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":432951000000,"holder_total_assets_yen":1212662000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"住友不動産株式会社","holder_name_en":"Sumitomo Realty & Development Co., Ltd.","holder_sec_code":"8830","doc_id":"S100YI5D","period_end":"2026-03-31","holder_table":"reporting","shares":4311600,"book_value_yen":2483000000,"prior_shares":862320,"prior_book_value_yen":2755000000,"purpose_ja":"（保有目的・増加理由）①建築設備関連資材を安定・継続的に発注する等、当社の賃貸事業、販売事業における同社との協業を円滑に進めるため②同社子会社は当社オフィスビル（東京日本橋タワー他）に入居しているテナントであり、当社の賃貸事業における同社との関係を維持・強化するため、保有しております。株式数の増加は株式分割によるものです。","reciprocal":"有","pct_outstanding":0.08247746165056277,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1004973465138794,"pct_of_holder_assets":0.0345547839449261,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":2470712000000,"holder_total_assets_yen":7185691000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ユニプレス株式会社","holder_name_en":"UNIPRES CORPORATION","holder_sec_code":"5949","doc_id":"S100YCON","period_end":"2026-03-31","holder_table":"reporting","shares":3780000,"book_value_yen":2177000000,"prior_shares":756000,"prior_book_value_yen":2415000000,"purpose_ja":"共同研究等の業務提携。共同研究等を基盤とする技術を用いた製品のグローバルでの拡販。","reciprocal":"有","pct_outstanding":0.07230837856923816,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.436527522996318,"pct_of_holder_assets":0.7449815551190533,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":151546000000,"holder_total_assets_yen":292222000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東洋製罐グループホールディングス株式会社","holder_name_en":"Toyo Seikan Group Holdings, Ltd.","holder_sec_code":"5901","doc_id":"S100YGR9","period_end":"2026-03-31","holder_table":"reporting","shares":3276410,"book_value_yen":1886000000,"prior_shares":655282,"prior_book_value_yen":2093000000,"purpose_ja":"原材料の購入等を行っており、取引関係の維持・強化を目的として保有している。株式分割により株式数が増加している。","reciprocal":"有","pct_outstanding":0.06267510439895176,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2592108500219216,"pct_of_holder_assets":0.152011941722845,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":727593000000,"holder_total_assets_yen":1240692000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"丸紅株式会社","holder_name_en":"Marubeni Corporation","holder_sec_code":"8002","doc_id":"S100YAY4","period_end":"2026-03-31","holder_table":"reporting","shares":3105975,"book_value_yen":1789000000,"prior_shares":621195,"prior_book_value_yen":1985000000,"purpose_ja":"同社は金属セグメント及びそのグループ会社にて取り扱う鉄鉱石・原料炭・合金鉄等の鉄鋼原料の重要な取引先であり、営業取引関係の維持・強化のために本銘柄を保有しております。金属セグメントは同社への鉄鋼原料の安定供給を継続するとともに、当社のグリーンへの取組みとも合致する鉄鋼業のサプライチェーンを通じた脱炭素化に資するビジネスを推進するうえで、同社との関係は重要な役割を果たすものと考えております。なお、当事業年度における同社による株式分割により、保有株式数が増加しました。","reciprocal":"無","pct_outstanding":0.059414819081108336,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03963402881564483,"pct_of_holder_assets":0.016986708019663184,"holder_equity_basis":"ifrs_consolidated","holder_equity_yen":4513798000000,"holder_total_assets_yen":10531764000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"山九株式会社","holder_name_en":"SANKYU INC.","holder_sec_code":"9065","doc_id":"S100YJRS","period_end":"2026-03-31","holder_table":"reporting","shares":3022473,"book_value_yen":1740000000,"prior_shares":595116,"prior_book_value_yen":1901000000,"purpose_ja":"主要事業全般で取引を行っており、事業上の関係を勘案し、良好な関係維持・強化を図ることを目的として、同社株式を継続して保有しております。なお、当該銘柄は株式分割を実施したため、株式数が増加しております。また、当社は同社の持株会に加入しており、当事業年度において株式を46,888株取得しております。","reciprocal":"有","pct_outstanding":0.057817492565952644,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5667973992468761,"pct_of_holder_assets":0.31085528078807173,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":306988000000,"holder_total_assets_yen":559746000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"鴻池運輸株式会社","holder_name_en":"Konoike Transport Co.,Ltd.","holder_sec_code":"9025","doc_id":"S100YGFS","period_end":"2026-03-31","holder_table":"reporting","shares":2575045,"book_value_yen":1482000000,"prior_shares":502500,"prior_book_value_yen":1605000000,"purpose_ja":"鉄鋼事業本部等が主に同社製鉄所内において、原材料工程から出荷工程まで多岐にわたる業務を継続的に行っております。取引関係の維持・強化のために、同社株式を保有しております。また、当社は同社の取引先企業持株会に加入しており、当事業年度において株式を1,102,933株取得しております。","reciprocal":"有","pct_outstanding":0.049258552564239125,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.9078045463733759,"pct_of_holder_assets":0.4944515991272028,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":163251000000,"holder_total_assets_yen":299726000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社名村造船所","holder_name_en":"Namura Shipbuilding Co.,Ltd.","holder_sec_code":"7014","doc_id":"S100YEFT","period_end":"2026-03-31","holder_table":"reporting","shares":2038500,"book_value_yen":1174000000,"prior_shares":407700,"prior_book_value_yen":1303000000,"purpose_ja":"鋼材の調達等の取引をおこなっており、同社との良好な取引関係の維持・強化を図ることが当社の中長期的な企業価値向上に資するため保有しております。なお、同社は株式分割をおこなったため、保有株式数が増加しております。","reciprocal":"有","pct_outstanding":0.038994875585553444,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8541847047096572,"pct_of_holder_assets":0.44110795497242133,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":137441000000,"holder_total_assets_yen":266148000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社奥村組","holder_name_en":"ＯＫＵＭＵＲＡ ＣＯＲＰＯＲＡＴＩＯＮ","holder_sec_code":"1833","doc_id":"S100Y95Z","period_end":"2026-03-31","holder_table":"reporting","shares":1654150,"book_value_yen":952000000,"prior_shares":330830,"prior_book_value_yen":1057000000,"purpose_ja":"株式の保有適否を取締役会にて検証した結果、主要な取引先であり、保有による取引関係等の強化によって、主に土木事業及び建築事業の工業関連工事において、中長期的な工事受注量の確保等が見込め、当社の企業価値向上に資すると判断しています。なお、当事業年度の株式の増加は、株式分割によるものです。","reciprocal":"有","pct_outstanding":0.03164256730431358,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.49081272813511784,"pct_of_holder_assets":0.21592736493766004,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":193964000000,"holder_total_assets_yen":440889000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"電源開発株式会社","holder_name_en":"Electric Power Development Co., Ltd.","holder_sec_code":"9513","doc_id":"S100YISC","period_end":"2026-03-31","holder_table":"reporting","shares":1568950,"book_value_yen":903000000,"prior_shares":313790,"prior_book_value_yen":1002000000,"purpose_ja":"火力発電合弁事業の相手先。協働事業展開の維持・強化を目的として保有。","reciprocal":"有","pct_outstanding":0.030012759406403765,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.058847450204499774,"pct_of_holder_assets":0.024146315440726412,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":1534476000000,"holder_total_assets_yen":3739701000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"富士石油株式会社","holder_name_en":"Fuji Oil Company, Ltd.","holder_sec_code":"5017","doc_id":"S100WJYZ","period_end":"2025-03-31","holder_table":"reporting","shares":243900,"book_value_yen":779000000,"prior_shares":243900,"prior_book_value_yen":894000000,"purpose_ja":"当社グループ企業との安定的取引関係の維持・強化を目的としています。同社には石油製品等を納入しています。","reciprocal":"無","pct_outstanding":0.02333035952078282,"pct_unavailable":null,"pct_basis_period_end":"2025-03-31","pct_share_classes":1,"pct_of_holder_equity":0.9064463579241331,"pct_of_holder_assets":0.20885782385697932,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":85940000000,"holder_total_assets_yen":372981000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東邦瓦斯株式会社","holder_name_en":"TOHO GAS CO., LTD.","holder_sec_code":"9533","doc_id":"S100YGFW","period_end":"2026-03-31","holder_table":"reporting","shares":1273045,"book_value_yen":733000000,"prior_shares":254609,"prior_book_value_yen":813000000,"purpose_ja":"資機材等調達上の関係維持・強化","reciprocal":"有","pct_outstanding":0.024352333279279312,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.15350174548028456,"pct_of_holder_assets":0.09055430849493304,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":477519000000,"holder_total_assets_yen":809459000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"三井不動産株式会社","holder_name_en":"Mitsui Fudosan Co., Ltd.","holder_sec_code":"8801","doc_id":"S100YHUO","period_end":"2026-03-31","holder_table":"reporting","shares":1226000,"book_value_yen":706000000,"prior_shares":490400,"prior_book_value_yen":1566000000,"purpose_ja":"同社持分法適用会社の日鉄興和不動産(株)は、東京都板橋区所在のMFLP・LOGIFRONT東京板橋の共同事業者であり、当社グループの事業機会創出において有用性があると考えております。なお、株式分割により株式数が増加しております。","reciprocal":"無但し、同社持分法適用会社の日鉄興和不動産㈱が保有","pct_outstanding":0.023452400033303174,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.020857682067474896,"pct_of_holder_assets":0.0069876955193827394,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":3384844000000,"holder_total_assets_yen":10103474000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社山口フィナンシャルグループ","holder_name_en":"Yamaguchi Financial Group, Inc.","holder_sec_code":"8418","doc_id":"S100YE1V","period_end":"2026-03-31","holder_table":"largest","shares":1202000,"book_value_yen":692000000,"prior_shares":240000,"prior_book_value_yen":768000000,"purpose_ja":"当社グループの営業地域内に生産拠点を有する同社と総合的な金融取引等を維持強化し、地域持続可能性・当社企業価値の向上を図るため保有しております。（株式数増加の理由）株式分割により増加しております。","reciprocal":"有","pct_outstanding":0.02299329921699055,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1032479846500684,"pct_of_holder_assets":0.005250194530329129,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":670231000000,"holder_total_assets_yen":13180464000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社シンニッタン","holder_name_en":"SNT CORPORATION","holder_sec_code":"6319","doc_id":"S100V8LF","period_end":"2024-03-31","holder_table":"reporting","shares":184000,"book_value_yen":674912000,"prior_shares":184000,"prior_book_value_yen":574080000,"purpose_ja":"（保有目的）鍛造事業における鋼材仕入先としての取引の安定化（定量的な保有効果）（注１）","reciprocal":"有","pct_outstanding":0.01997268724164983,"pct_unavailable":null,"pct_basis_period_end":"2024-03-31","pct_share_classes":1,"pct_of_holder_equity":2.4999906469637767,"pct_of_holder_assets":1.7318010104926698,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":26996581000,"holder_total_assets_yen":38971683000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東京製綱株式会社","holder_name_en":"TOKYO ROPE MFG. CO., LTD.","holder_sec_code":"5981","doc_id":"S100YJJW","period_end":"2026-03-31","holder_table":"reporting","shares":1096057,"book_value_yen":631000000,"prior_shares":210840,"prior_book_value_yen":673000000,"purpose_ja":"鋼索鋼線関連事業とスチールコード関連事業における主要材料の調達先であるとともに、鋼索製品の需要先であり、両事業の拡大や製品開発等を目的とした良好な関係の維持・強化を図るため、継続保有しております。(注)１ 株式数の増加理由は取引先持株会を通じての取得及び現物配当であります。","reciprocal":"有","pct_outstanding":0.020966694309381872,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.53188803379379,"pct_of_holder_assets":0.7084236171144368,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":41191000000,"holder_total_assets_yen":89071000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"中部鋼鈑株式会社","holder_name_en":"Chubu Steel Plate Co.,Ltd.","holder_sec_code":"5461","doc_id":"S100Y9WS","period_end":"2026-03-31","holder_table":"reporting","shares":1071500,"book_value_yen":617000000,"prior_shares":214300,"prior_book_value_yen":684000000,"purpose_ja":"同社グループ会社と鉄鋼製品の販売、資材の仕入、製鉄設備の維持更新取引等を行っており、取引関係の維持・強化を図るため保有しております。株式数の増加は、株式の分割のためであります。","reciprocal":"無(注)５","pct_outstanding":0.02049693852829066,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8146720185908947,"pct_of_holder_assets":0.7294955012473545,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":75736000000,"holder_total_assets_yen":84579000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"高周波熱錬株式会社","holder_name_en":"Neturen Co., Ltd.","holder_sec_code":"5976","doc_id":"S100YIP6","period_end":"2026-03-31","holder_table":"reporting","shares":1019000,"book_value_yen":586000000,"prior_shares":203800,"prior_book_value_yen":651000000,"purpose_ja":"製品事業部における原材料等の主要な仕入先であり、主に国内事業における原材料等の安定的な調達のための良好な関係を維持・強化するため、また、高周波焼入用鋼の共同開発やユーザーへのＰＲ協働など、相互の取り組みによる将来的な企業価値向上のため、継続して保有しております。保有に伴う便益やリスクが、当社の資本コストに見合っているか等を総合的に判断し保有しております。 なお、2025年10月１日付にて、株式１株が５株に分割されたことにより株式数が増加しております。","reciprocal":"有","pct_outstanding":0.019492655492606797,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8963259812169231,"pct_of_holder_assets":0.6648061171238627,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":65378000000,"holder_total_assets_yen":88146000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"マックス株式会社","holder_name_en":"MAX CO., LTD.","holder_sec_code":"6454","doc_id":"S100YHEY","period_end":"2026-03-31","holder_table":"reporting","shares":1014000,"book_value_yen":583000000,"prior_shares":202800,"prior_book_value_yen":647000000,"purpose_ja":"（保有目的）当社のオフィス機器セグメント及びインダストリアル機器セグメントにおける消耗品の素材の仕入先であり、安定的な取引関係の維持・強化を目的として保有しております。（定量的な保有効果）（注２）","reciprocal":"有","pct_outstanding":0.019397009489208333,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5049149092798684,"pct_of_holder_assets":0.4226812345482096,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":115465000000,"holder_total_assets_yen":137929000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社長府製作所","holder_name_en":"CHOFU SEISAKUSHO CO., LTD.","holder_sec_code":"5946","doc_id":"S100XRH4","period_end":"2025-12-31","holder_table":"reporting","shares":902355,"book_value_yen":579000000,"prior_shares":180471,"prior_book_value_yen":574000000,"purpose_ja":"取引関係の維持・強化の為株式数が増加した理由は、株式分割によるものであります。","reciprocal":"無","pct_outstanding":0.01726132987932405,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.42038161066418844,"pct_of_holder_assets":0.3910154245117372,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":137732000000,"holder_total_assets_yen":148076000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社オカムラ","holder_name_en":"OKAMURA CORPORATION","holder_sec_code":"7994","doc_id":"S100YFDV","period_end":"2026-03-31","holder_table":"reporting","shares":1000000,"book_value_yen":575000000,"prior_shares":200000,"prior_book_value_yen":639000000,"purpose_ja":"オフィス環境事業における販売ならびに仕入取引の維持・強化を図るため、保有しております。同社へのオフィス家具の販売及び鋼板の仕入等の取引があります。また、a.に記載の方法による保有の合理性判定の結果、当事業年度末においては保有継続の合理性があると判断しております。なお、株式分割により株式数が増加しております。","reciprocal":"有","pct_outstanding":0.019129200679692638,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2790056723066248,"pct_of_holder_assets":0.19047492853049422,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":206089000000,"holder_total_assets_yen":301877000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"月島ホールディングス株式会社","holder_name_en":"TSUKISHIMA HOLDINGS CO., LTD.","holder_sec_code":"6332","doc_id":"S100YH1A","period_end":"2026-03-31","holder_table":"reporting","shares":868200,"book_value_yen":499000000,"prior_shares":224000,"prior_book_value_yen":715000000,"purpose_ja":"産業事業における取引先であり、継続的取引関係の維持・強化を目的として保有しておりましたが、当事業年度に一部を売却しており、今後も売却を予定しております。また、株式数の増加は当事業年度に株式分割が行われたことによるものであります。","reciprocal":"無","pct_outstanding":0.016607972030109146,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.4248037730066572,"pct_of_holder_assets":0.24578738160091812,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":117466000000,"holder_total_assets_yen":203021000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社千葉銀行","holder_name_en":"The Chiba Bank, Ltd.","holder_sec_code":"8331","doc_id":"S100YDSE","period_end":"2026-03-31","holder_table":"reporting","shares":805835,"book_value_yen":464000000,"prior_shares":161167,"prior_book_value_yen":514000000,"purpose_ja":"千葉県君津市に製鉄所を持つ鉄鋼メーカーであり、発行会社との連携強化を通じて地域経済の発展や地域雇用の維持・創出に貢献できること、また発行会社及びその従業員との銀行取引（預金・為替・融資等）拡大が当行の営業基盤を強固にし、中長期的な企業価値向上にも資すると考え保有しております。株式数の増加は株式分割によるものです。","reciprocal":"無","pct_outstanding":0.015414979429720116,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03690447784935974,"pct_of_holder_assets":0.002187463655220653,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":1257300000000,"holder_total_assets_yen":21211781000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本パーカライジング株式会社","holder_name_en":"NIHON PARKERIZING CO., LTD.","holder_sec_code":"4095","doc_id":"S100YJGK","period_end":"2026-03-31","holder_table":"reporting","shares":793194,"book_value_yen":456000000,"prior_shares":151020,"prior_book_value_yen":482000000,"purpose_ja":"薬品事業・加工事業において売上取引があり、特に取引額が大きい保有先の一つである。営業上の関係の維持・強化を目的として保有。取引先持株会を通じた取得のため株式数増加。株式分割（1:5）により株数増加","reciprocal":"有","pct_outstanding":0.015173167203928122,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.20590904780612038,"pct_of_holder_assets":0.16697547364643675,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":221457000000,"holder_total_assets_yen":273094000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"大同特殊鋼株式会社","holder_name_en":"Daido Steel Co., Ltd.","holder_sec_code":"5471","doc_id":"S100YNEC","period_end":"2026-03-31","holder_table":"reporting","shares":775000,"book_value_yen":446000000,"prior_shares":155000,"prior_book_value_yen":495000000,"purpose_ja":"特殊鋼鋼材事業等における継続的関係の維持・強化を目的としております。","reciprocal":"有","pct_outstanding":0.014825130526761795,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.09437855109879065,"pct_of_holder_assets":0.0520796842523179,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":472565000000,"holder_total_assets_yen":856380000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社いよぎんホールディングス","holder_name_en":"Iyogin Holdings, Inc.","holder_sec_code":"5830","doc_id":"S100YBIB","period_end":"2026-03-31","holder_table":"largest","shares":754010,"book_value_yen":434000000,"prior_shares":150802,"prior_book_value_yen":481000000,"purpose_ja":"業界内での有力企業であり、総合的な関係の維持強化を図ることにより当社グループの中長期的な企業価値の向上に資するため保有しております。株式分割に伴い株式数が増加しております。","reciprocal":"無","pct_outstanding":0.014423608604495045,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04943716809320615,"pct_of_holder_assets":0.004549355899256715,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":877882000000,"holder_total_assets_yen":9539812000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ＳＥＣカーボン株式会社","holder_name_en":"SEC CARBON,LIMITED","holder_sec_code":"5304","doc_id":"S100YDCX","period_end":"2026-03-31","holder_table":"reporting","shares":685889,"book_value_yen":395000000,"prior_shares":136331,"prior_book_value_yen":435000000,"purpose_ja":"販売取引先との関係の維持強化 持株会による定期購入","reciprocal":"無","pct_outstanding":0.013120508324993703,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5088370175709795,"pct_of_holder_assets":0.45393950537832123,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":77628000000,"holder_total_assets_yen":87016000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本通運株式会社","holder_name_en":"NIPPON EXPRESS CO., LTD.","holder_sec_code":"9062","doc_id":"S100NRU9","period_end":"2021-12-31","holder_table":"reporting","shares":206655,"book_value_yen":388000000,"prior_shares":206655,"prior_book_value_yen":389000000,"purpose_ja":"主に自動車事業に係る営業取引維持・強化のため保有しています。","reciprocal":"無","pct_outstanding":0.022433855331819567,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.05906063152254655,"pct_of_holder_assets":0.023976947524472863,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":656952000000,"holder_total_assets_yen":1618221000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"伊勢湾海運株式会社","holder_name_en":"ISEWAN TERMINAL SERVICE CO.,LTD.","holder_sec_code":"9359","doc_id":"S100YE7Y","period_end":"2026-03-31","holder_table":"reporting","shares":659659,"book_value_yen":379897000,"prior_shares":123527,"prior_book_value_yen":394669000,"purpose_ja":"物流事業の取引関係の維持・強化を図るため、持株会に加入しており、株式数が増加しております。（注）２","reciprocal":"無","pct_outstanding":0.012618749391165366,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.7420668249833194,"pct_of_holder_assets":0.6062954810983856,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":51194446000,"holder_total_assets_yen":62658722000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"三和ホールディングス株式会社","holder_name_en":"Sanwa Holdings Corporation","holder_sec_code":"5929","doc_id":"S100YFHH","period_end":"2026-03-31","holder_table":"reporting","shares":648000,"book_value_yen":373000000,"prior_shares":154600,"prior_book_value_yen":493000000,"purpose_ja":"原材料の安定調達、営業政策等における取引関係の維持・強化を図る目的で保有しており、その保有効果についても、当社の資本コストを上回ることを確認しております。なお、株式数の増加については株式分割によるものです。","reciprocal":"有","pct_outstanding":0.01239572204044083,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1062726506051558,"pct_of_holder_assets":0.0680907925914297,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":350984000000,"holder_total_assets_yen":547798000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社伊予銀行","holder_name_en":"The Iyo Bank, Ltd.","holder_sec_code":"8385","doc_id":"S100OLYJ","period_end":"2022-03-31","holder_table":"reporting","shares":150802,"book_value_yen":327000000,"prior_shares":150802,"prior_book_value_yen":284000000,"purpose_ja":"緊密な関係の維持強化","reciprocal":"無","pct_outstanding":0.01637061891436962,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.044684462105663035,"pct_of_holder_assets":0.0038268902116691595,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":731798000000,"holder_total_assets_yen":8544797000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"エア・ウォーター株式会社","holder_name_en":"AIR WATER INC.","holder_sec_code":"4088","doc_id":"S100YZGY","period_end":"2026-03-31","holder_table":"reporting","shares":522445,"book_value_yen":300000000,"prior_shares":104489,"prior_book_value_yen":333000000,"purpose_ja":"デジタル＆インダストリーグループにおける産業ガスの販売先であり、同社の製鉄所に各種産業ガスの供給を行っております。相互の事業拡大・企業価値向上を目的として関係強化を図るため、継続して保有しております。","reciprocal":"有","pct_outstanding":0.009993955249102019,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07687793577617245,"pct_of_holder_assets":0.024665231150213723,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":390229000000,"holder_total_assets_yen":1216287000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"宮地エンジニアリンググループ株式会社","holder_name_en":"MIYAJI ENGINEERING GROUP,INC.","holder_sec_code":"3431","doc_id":"S100YDPT","period_end":"2026-03-31","holder_table":"largest","shares":510000,"book_value_yen":293000000,"prior_shares":102000,"prior_book_value_yen":325000000,"purpose_ja":"橋梁の主要材料である鉄鋼製品の供給を受けており、事業上の関係を勘案し、良好な関係の維持、強化を図るため、継続して保有しております。株式数が増加した理由は株式分割によるものであります。","reciprocal":"有","pct_outstanding":0.009755892346643246,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5861406737617028,"pct_of_holder_assets":0.35722558856878117,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":49988000000,"holder_total_assets_yen":82021000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社日阪製作所","holder_name_en":"HISAKA WORKS, LTD.","holder_sec_code":"6247","doc_id":"S100YJL5","period_end":"2026-03-31","holder_table":"reporting","shares":500000,"book_value_yen":287000000,"prior_shares":100000,"prior_book_value_yen":319000000,"purpose_ja":"取引関係の維持・発展のために保有しており、熱交換器事業、プロセスエンジニアリング事業及びバルブ事業にて取引を行っております。同社は2025年9月30日付で１株につき５株の割合で株式分割を実施しております。","reciprocal":"有","pct_outstanding":0.009564600339846319,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.45353982300884954,"pct_of_holder_assets":0.34544185262752464,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":63280000000,"holder_total_assets_yen":83082000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"兼松株式会社","holder_name_en":"KANEMATSU CORPORATION","holder_sec_code":"8020","doc_id":"S100YGCZ","period_end":"2026-03-31","holder_table":"reporting","shares":500000,"book_value_yen":287000000,"prior_shares":100000,"prior_book_value_yen":319000000,"purpose_ja":"［鉄鋼・素材・プラント］鉄鋼関連の国内販売・輸出取引におけるサプライヤーであり、取引関係の維持・拡大を目的に出資しております。","reciprocal":"無","pct_outstanding":0.009564600339846319,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.13772187858400795,"pct_of_holder_assets":0.03915368024130672,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":208391000000,"holder_total_assets_yen":733009000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東海カーボン株式会社","holder_name_en":"TOKAI CARBON CO.,LTD.","holder_sec_code":"5301","doc_id":"S100XU85","period_end":"2025-12-31","holder_table":"reporting","shares":393330,"book_value_yen":252000000,"prior_shares":78666,"prior_book_value_yen":250000000,"purpose_ja":"事業機会の創出や取引・協業関係の構築・維持・強化等を通じた中長期的な企業価値の向上。株式数の増加は、株式分割によるもの。","reciprocal":"無","pct_outstanding":0.007524088503343505,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07141925939361649,"pct_of_holder_assets":0.03794992116355663,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":352846000000,"holder_total_assets_yen":664033000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"モリテックスチール株式会社","holder_name_en":"MOLITEC STEEL CO., LTD．","holder_sec_code":"5986","doc_id":"S100YGQQ","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":208737000,"prior_shares":null,"prior_book_value_yen":231608000,"purpose_ja":"同社は、販売代理店を通じて当社の主要な仕入先であり、安定的な鋼材調達等の取引関係を維持・強化し、強固かつ長期的な信頼関係を保持するため、保有しております。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.2872920115333746,"pct_of_holder_assets":0.5937363583242741,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":16215202000,"holder_total_assets_yen":35156513000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社　高田工業所","holder_name_en":"TAKADA CORPORATION","holder_sec_code":"1966","doc_id":"S100YGU2","period_end":"2026-03-31","holder_table":"reporting","shares":359880,"book_value_yen":207254000,"prior_shares":71131,"prior_book_value_yen":227264000,"purpose_ja":"営業関係強化のため入会している取引先持株会を通じた株式の取得及び株式分割により保有株式数が増加しております。定量的な保有効果については記載が困難なため保有の合理性を検証した方法を欄外に注記しております。","reciprocal":"有","pct_outstanding":0.006884216740607786,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.940949253055075,"pct_of_holder_assets":0.4343399991063981,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":22026055000,"holder_total_assets_yen":47716996000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ニチアス株式会社","holder_name_en":"NICHIAS CORPORATION","holder_sec_code":"5393","doc_id":"S100YG7B","period_end":"2026-03-31","holder_table":"reporting","shares":355000,"book_value_yen":204000000,"prior_shares":71000,"prior_book_value_yen":226000000,"purpose_ja":"メンテナンス工事等の継続的な受注先であり、重要な取引先であるため、関係強化を目的として株式を保有しております。","reciprocal":"無","pct_outstanding":0.006790866241290886,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08513763918334641,"pct_of_holder_assets":0.06642289896881705,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":239612000000,"holder_total_assets_yen":307123000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社　群馬銀行","holder_name_en":"The Gunma Bank, Ltd.","holder_sec_code":"8334","doc_id":"S100Y8O1","period_end":"2026-03-31","holder_table":"reporting","shares":341145,"book_value_yen":196000000,"prior_shares":68229,"prior_book_value_yen":217000000,"purpose_ja":"(保有目的) 株式保有を含めた当社との総合的な取引関係の維持・拡大を図ることが、当行の企業価値向上につながるため保有(定量的な保有効果)定量的な判断基準を上回っており、合理性が認められるため保有(株式数が増加した理由)株式分割によるものです","reciprocal":"無","pct_outstanding":0.006525831165873745,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03164756241109215,"pct_of_holder_assets":0.0018054660115035819,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":619321000000,"holder_total_assets_yen":10855923000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"岡部株式会社","holder_name_en":"OKABE CO., LTD.","holder_sec_code":"5959","doc_id":"S100XUL3","period_end":"2025-12-31","holder_table":"reporting","shares":295000,"book_value_yen":189000000,"prior_shares":59000,"prior_book_value_yen":187000000,"purpose_ja":"建設関連製品の主要材料の仕入先であります。事業上の関係を勘案し、同社との良好な関係の維持・強化を図るため、継続して保有しております。また、当事業年度における株式分割により、保有株式数が増加しております。","reciprocal":"有","pct_outstanding":0.005643114200509328,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.30530158627596676,"pct_of_holder_assets":0.222274491355992,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":61906000000,"holder_total_assets_yen":85030000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社錢高組","holder_name_en":"THE ZENITAKA CORPORATION","holder_sec_code":"1811","doc_id":"S100YJ24","period_end":"2026-03-31","holder_table":"reporting","shares":315215,"book_value_yen":181000000,"prior_shares":63043,"prior_book_value_yen":201000000,"purpose_ja":"中長期的な取引関係の強化を通じて、当社グループの企業価値向上に資する事を目的として保有しております。","reciprocal":"無","pct_outstanding":0.006029810992249315,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.15705806809898998,"pct_of_holder_assets":0.0832340809072055,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":115244000000,"holder_total_assets_yen":217459000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社駒井ハルテック","holder_name_en":"KOMAIHALTEC Inc.","holder_sec_code":"5915","doc_id":"S100YKDC","period_end":"2026-03-31","holder_table":"reporting","shares":309375,"book_value_yen":178000000,"prior_shares":61875,"prior_book_value_yen":197000000,"purpose_ja":"建設資材等の仕入先であり、事業上の関係を勘案し、同社との良好な関係の維持、強化を図るため継続して保有しております。株数の増加は株式分割によるものです。","reciprocal":"有","pct_outstanding":0.00591809646027991,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5087603967187813,"pct_of_holder_assets":0.26751228602774313,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":34987000000,"holder_total_assets_yen":66539000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本カーボン株式会社","holder_name_en":"Nippon Carbon Co.,Ltd.","holder_sec_code":"5302","doc_id":"S100XT3M","period_end":"2025-12-31","holder_table":"reporting","shares":234259,"book_value_yen":150000000,"prior_shares":46175,"prior_book_value_yen":146000000,"purpose_ja":"炭素製品関連事業の取引の関係強化及び取引の円滑化のために保有しております。定量的な保有効果については、記載が困難であるため開示を控えさせていただきます。(注２)また、株式数の増加は、2025年９月30日を基準日として、１株につき５株の割合をもって分割したことによるもの、および取引先持株会での定期買付によるものとなります。","reciprocal":"無","pct_outstanding":0.004481187422024117,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2358231012309966,"pct_of_holder_assets":0.1752193161774154,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":63607000000,"holder_total_assets_yen":85607000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社上組","holder_name_en":"Kamigumi Co., Ltd.","holder_sec_code":"9364","doc_id":"S100YG9D","period_end":"2026-03-31","holder_table":"reporting","shares":244325,"book_value_yen":140000000,"prior_shares":48865,"prior_book_value_yen":156000000,"purpose_ja":"物流事業の取引関係の維持を保有目的としております。株式数が増加した理由は、株式分割による株式数の増加であります。","reciprocal":"無","pct_outstanding":0.004673741956065904,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03518834561993068,"pct_of_holder_assets":0.02600263369532714,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":397859000000,"holder_total_assets_yen":538407000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"リックス株式会社","holder_name_en":"RIX CORPORATION","holder_sec_code":"7525","doc_id":"S100YGQ4","period_end":"2026-03-31","holder_table":"reporting","shares":233122,"book_value_yen":134255000,"prior_shares":45605,"prior_book_value_yen":145710000,"purpose_ja":"（保有目的）取引関係強化（定量的な保有効果）定量的な保有効果の算定は困難ですが、2025年11月30日時点において、当社の政策保有株式の保有基準（配当利回り、営業取引高等）を満たしています。（増加理由）取引先持株会を通じた株式の取得及び株式分割による増加","reciprocal":"無","pct_outstanding":0.004459437520851307,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.4599713886181792,"pct_of_holder_assets":0.28260858491016033,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":29187685000,"holder_total_assets_yen":47505634000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東海運株式会社","holder_name_en":"Azuma Shipping Co.,Ltd.","holder_sec_code":"9380","doc_id":"S100YHD3","period_end":"2026-03-31","holder_table":"reporting","shares":214370,"book_value_yen":123455000,"prior_shares":42874,"prior_book_value_yen":136982000,"purpose_ja":"当該銘柄の保有目的は、主として物流事業で取引があり、取引先との関係性強化による経済合理性の向上のためであります。なお、保有株式数の増加については、株式分割が行われたためであります。","reciprocal":"無","pct_outstanding":0.0041007267497057106,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.6625642123230235,"pct_of_holder_assets":0.27987713653282026,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":18632911000,"holder_total_assets_yen":44110427000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"名港海運株式会社","holder_name_en":"MEIKO TRANS CO.,LTD.","holder_sec_code":"9357","doc_id":"S100YL49","period_end":"2026-03-31","holder_table":"reporting","shares":180259,"book_value_yen":103000000,"prior_shares":35659,"prior_book_value_yen":113000000,"purpose_ja":"物流関連取引を行っており、同社との関係維持、強化を図るため保有しております。同社の当社利益への貢献や取引状況等について、定量的および定性的に検証を行った結果、引き続き保有することが望ましいと判断いたしました。株式数の増加は、株式分割および同社取引先持株会において、継続取得したことによるものであります。","reciprocal":"無","pct_outstanding":0.0034482105853207152,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07252524568595899,"pct_of_holder_assets":0.05731589741442645,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":142019512000,"holder_total_assets_yen":179705814000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東京窯業株式会社","holder_name_en":"TYK CORPORATION","holder_sec_code":"5363","doc_id":"S100YI3M","period_end":"2026-03-31","holder_table":"reporting","shares":153094,"book_value_yen":88166000,"prior_shares":29772,"prior_book_value_yen":95121000,"purpose_ja":"取引及び協力関係の維持・発展による企業価値の向上のため増加:持株会を通じた株式の取得","reciprocal":"無（注８）","pct_outstanding":0.0029285658488568647,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.16322503008423586,"pct_of_holder_assets":0.13160283010418844,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":54015000000,"holder_total_assets_yen":66994000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"三菱製鋼株式会社","holder_name_en":"Mitsubishi Steel Mfg.Co.,Ltd.","holder_sec_code":"5632","doc_id":"S100YCQQ","period_end":"2026-03-31","holder_table":"reporting","shares":152310,"book_value_yen":87000000,"prior_shares":30462,"prior_book_value_yen":97000000,"purpose_ja":"（保有目的）特殊鋼鋼材の生産ラインを相互に活用し、室蘭での協業関係を深めるため保有している(定量的な保有効果)（注）(株式数が増加した理由) 同社が2025年10月１日を効力発生日として、普通株式１株につき、５株の割合で株式分割を行ったため増加している","reciprocal":"有","pct_outstanding":0.0029135685555239854,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.15392781316348195,"pct_of_holder_assets":0.061476713045075855,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":56520000000,"holder_total_assets_yen":141517000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"中国工業株式会社","holder_name_en":"CHUGOKUKOGYO CO.,LTD.","holder_sec_code":"5974","doc_id":"S100YHRE","period_end":"2026-03-31","holder_table":"reporting","shares":142000,"book_value_yen":81000000,"prior_shares":28400,"prior_book_value_yen":90000000,"purpose_ja":"安定的な取引関係の維持・強化のため保有。当事業年度の受取配当金は3百万円。","reciprocal":"有","pct_outstanding":0.0027163464965163546,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.248266296809986,"pct_of_holder_assets":0.6232686980609419,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":6489000000,"holder_total_assets_yen":12996000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"高田機工株式会社","holder_name_en":"ＴＡＫＡＤＡＫＩＫＯ （Steel　Construction） ＣＯ.,ＬＴＤ.","holder_sec_code":"5923","doc_id":"S100YI9L","period_end":"2026-03-31","holder_table":"reporting","shares":125000,"book_value_yen":71987000,"prior_shares":25000,"prior_book_value_yen":79875000,"purpose_ja":"当該企業グループとは、鋼材の購入及び加工等多岐にわたる取引を長年続けており、今後とも当社が橋梁事業・鉄構事業をさらに拡大していくためには、当該企業グループとの円滑な取引継続による鋼材等の安定確保が不可欠であると認識しております。なお、同社の株式数は株式分割により増加しております。","reciprocal":"無","pct_outstanding":0.0023911500849615797,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.34391144362736925,"pct_of_holder_assets":0.24933445983589236,"holder_equity_basis":"parent_only","holder_equity_yen":20931842000,"holder_total_assets_yen":28871661000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"中外炉工業株式会社","holder_name_en":"Chugai Ro Co., Ltd.","holder_sec_code":"1964","doc_id":"S100YBFQ","period_end":"2026-03-31","holder_table":"reporting","shares":123609,"book_value_yen":71000000,"prior_shares":23875,"prior_book_value_yen":76000000,"purpose_ja":"顧客であり、営業上の取引関係の維持・強化を図るため保有しており、持株会における買増により増加いたしました。","reciprocal":"無","pct_outstanding":0.0023645413668161273,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2255328610908167,"pct_of_holder_assets":0.13845013845013845,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":31481000000,"holder_total_assets_yen":51282000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社不動テトラ","holder_name_en":"Fudo Tetra Corporation","holder_sec_code":"1813","doc_id":"S100YDLY","period_end":"2026-03-31","holder_table":"reporting","shares":117160,"book_value_yen":67000000,"prior_shares":23432,"prior_book_value_yen":75000000,"purpose_ja":"民間需要からの受注を拡大する営業戦略から、同社グループの施設整備において当社の３事業に関係する受注を図ることに加えて、鋼材や地盤改良材など同社が供給する建設資材の安定調達を図るため、同社株を保有している。 ","reciprocal":"有","pct_outstanding":0.0022411771516327892,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.173840844814613,"pct_of_holder_assets":0.09414343525179857,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":38541000000,"holder_total_assets_yen":71168000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"瀧上工業株式会社","holder_name_en":"The Takigami Steel Construction Co.,Ltd.","holder_sec_code":"5918","doc_id":"S100YJYC","period_end":"2026-03-31","holder_table":"reporting","shares":109440,"book_value_yen":63000000,"prior_shares":21888,"prior_book_value_yen":69000000,"purpose_ja":"主要材料（鋼板・形鋼）の筆頭メーカーとの取引関係の維持及び安定株主を目的として保有。毎期、日本製鉄製の鋼板等をメインに使用しております。（注）１","reciprocal":"有（注）４","pct_outstanding":0.0020934997223855624,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1253107906514172,"pct_of_holder_assets":0.08636762447905243,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":50275000000,"holder_total_assets_yen":72944000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"大石産業株式会社","holder_name_en":"OHISHI SANGYO CO.,LTD.","holder_sec_code":"3943","doc_id":"S100YE9U","period_end":"2026-03-31","holder_table":"reporting","shares":108850,"book_value_yen":62000000,"prior_shares":21770,"prior_book_value_yen":69000000,"purpose_ja":"当社の販売先であり、また、地元企業との関係強化・情報収集のために保有しております。株式分割により株式数が増加しております。","reciprocal":"無","pct_outstanding":0.0020822134939845437,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3161490999949008,"pct_of_holder_assets":0.22100235260568904,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":19611000000,"holder_total_assets_yen":28054000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"丸全昭和運輸株式会社","holder_name_en":"Maruzen Showa Unyu Co.,Ltd.","holder_sec_code":"9068","doc_id":"S100YKCI","period_end":"2026-03-31","holder_table":"reporting","shares":101040,"book_value_yen":58000000,"prior_shares":40408,"prior_book_value_yen":129000000,"purpose_ja":"当社物流事業における取引関係の維持、強化による事業拡大等を目的として保有しておりましたが、保有の妥当性を見直すことにより、当事業年度中に保有する株式の一部を売却しました。保有株数が増加しておりますが、同社は2025年10月１日付で株式分割を行っているため、株式数は実質減少しております。","reciprocal":"無","pct_outstanding":0.001932814436676144,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.040172603669559555,"pct_of_holder_assets":0.028350074541144268,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":144377000000,"holder_total_assets_yen":204585000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本コンクリート工業株式会社","holder_name_en":"NIPPON CONCRETE INDUSTRIES CO., LTD.","holder_sec_code":"5269","doc_id":"S100YI1J","period_end":"2026-03-31","holder_table":"reporting","shares":100000,"book_value_yen":57590000,"prior_shares":20000,"prior_book_value_yen":63900000,"purpose_ja":"取引関係維持、強化のため株式分割により、株式数が増加している","reciprocal":"有","pct_outstanding":0.0019129200679692637,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1188711783194823,"pct_of_holder_assets":0.06567296555438702,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":48447404000,"holder_total_assets_yen":87692096000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ミネベアミツミ株式会社","holder_name_en":"MINEBEA MITSUMI Inc.","holder_sec_code":"6479","doc_id":"S100YISS","period_end":"2026-03-31","holder_table":"reporting","shares":91875,"book_value_yen":53000000,"prior_shares":18375,"prior_book_value_yen":59000000,"purpose_ja":"当社グループの主要仕入れ先であり、事業上の関係を勘案し、同社との良好な関係の維持、強化をはかるため継続して保有するものです。","reciprocal":"有","pct_outstanding":0.0017574953124467611,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.005895629558684318,"pct_of_holder_assets":0.0029203724632019296,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":898971000000,"holder_total_assets_yen":1814837000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本金属株式会社","holder_name_en":"NIPPON KINZOKU CO., LTD.","holder_sec_code":"5491","doc_id":"S100YJG2","period_end":"2026-03-31","holder_table":"reporting","shares":82005,"book_value_yen":47000000,"prior_shares":16401,"prior_book_value_yen":52000000,"purpose_ja":"購買取引先として事業上の関係を維持・強化するために保有しております。株式分割により株式数が増加しております。(注)１","reciprocal":"有","pct_outstanding":0.0015686901017381947,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.16099198465438103,"pct_of_holder_assets":0.07154055740749198,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":29194000000,"holder_total_assets_yen":65697000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"栗林商船株式会社","holder_name_en":"Kuribayashi Steamship Co., Ltd.","holder_sec_code":"9171","doc_id":"S100YKD9","period_end":"2026-03-31","holder_table":"reporting","shares":75000,"book_value_yen":43192000,"prior_shares":15000,"prior_book_value_yen":47925000,"purpose_ja":"同社は、当社の主要取引先であり、主に海上輸送取引の関係維持・強化のため、保有しております。（注）2、4","reciprocal":"無","pct_outstanding":0.0014346900509769479,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.11951049836862856,"pct_of_holder_assets":0.052446043546341435,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":36140758000,"holder_total_assets_yen":82355116000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"イワブチ株式会社","holder_name_en":"IWABUCHI CORPORATION","holder_sec_code":"5983","doc_id":"S100YHYU","period_end":"2026-03-31","holder_table":"reporting","shares":73500,"book_value_yen":42328000,"prior_shares":14700,"prior_book_value_yen":46966000,"purpose_ja":"当社の主要材料である薄板鋼材のほとんどを供給している鉄鋼メーカーであり、長期にわたる取引関係と当社事業への深い理解によって円滑な供給を実現しており、今後の取引関係の維持によるサプライチェーン強化を目的に同社株式を保有しております。なお、株式数の増加は株式分割によるものであります。","reciprocal":"有","pct_outstanding":0.0014059962499574088,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.19617038590016544,"pct_of_holder_assets":0.15519482105114646,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":21577161000,"holder_total_assets_yen":27274106000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社堀場製作所","holder_name_en":"HORIBA, Ltd.","holder_sec_code":"6856","doc_id":"S100XSIJ","period_end":"2025-12-31","holder_table":"reporting","shares":59587,"book_value_yen":38000000,"prior_shares":11071,"prior_book_value_yen":35000000,"purpose_ja":"・保有目的及び増加理由販売先として事業上の良好な信頼関係の維持及び、業務のより円滑な推進を目的に株式を継続的に保有しています。株式数増加の理由は、取引先持株会での定期買付によるものです。・定量的な保有効果（注）１","reciprocal":"無","pct_outstanding":0.0011398516809008451,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.010899495181275814,"pct_of_holder_assets":0.00733195826958067,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":348640000000,"holder_total_assets_yen":518279000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"特殊電極株式会社","holder_name_en":"ＴＯＫＵＤＥＮ　ＣＯ．，ＬＴＤ．","holder_sec_code":"3437","doc_id":"S100YD8G","period_end":"2026-03-31","holder_table":"reporting","shares":62118,"book_value_yen":35773000,"prior_shares":11575,"prior_book_value_yen":36984000,"purpose_ja":"主に工事施工事業の売上取引及び仕入取引の安定強化を図り、業界の情報把握を目的として保有しております。取引先持株会における定期買付により株式数が増加しており、良好な取引関係の継続による当社の持続的な成長と中長期的な企業価値向上に資すると判断しております。","reciprocal":"無","pct_outstanding":0.0011882676878211473,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.45250917876534935,"pct_of_holder_assets":0.3000113050412097,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":7905475000,"holder_total_assets_yen":11923884000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社トーエネック","holder_name_en":"TOENEC CORPORATION","holder_sec_code":"1946","doc_id":"S100YIKH","period_end":"2026-03-31","holder_table":"reporting","shares":62000,"book_value_yen":35000000,"prior_shares":12400,"prior_book_value_yen":39000000,"purpose_ja":"工場や事務所等において、建設・保守・メンテナンス等の設備工事業の取引を行っており、取引関係の維持・強化を図るために継続して保有している。［株式数が増加した理由］株式分割のため。","reciprocal":"無","pct_outstanding":0.0011860104421409436,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02285042762943135,"pct_of_holder_assets":0.011216043428520155,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":153170000000,"holder_total_assets_yen":312053000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ダイニチ工業株式会社","holder_name_en":"Dainichi Co.,Ltd.","holder_sec_code":"5951","doc_id":"S100YDWR","period_end":"2026-03-31","holder_table":"reporting","shares":60000,"book_value_yen":34554000,"prior_shares":12000,"prior_book_value_yen":38340000,"purpose_ja":"当該企業とは、グループ会社を通じて鉄鋼製品の取引を長年続けており、今後とも当社が事業を継続・拡大していくためには、当該企業との円滑な取引継続、数量確保が欠かせないと考えております。当期配当金１百万円","reciprocal":"無","pct_outstanding":0.0011477520407815582,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.11652860889648076,"pct_of_holder_assets":0.10091357538164353,"holder_equity_basis":"parent_only","holder_equity_yen":29652804000,"holder_total_assets_yen":34241181000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社横河ブリッジホールディングス","holder_name_en":"Yokogawa Bridge Holdings Corp.","holder_sec_code":"5911","doc_id":"S100YH06","period_end":"2026-03-31","holder_table":"reporting","shares":50000,"book_value_yen":28000000,"prior_shares":10000,"prior_book_value_yen":31000000,"purpose_ja":"橋梁用鋼材の主要仕入先であり、事業上の関係を勘案し、同社との良好な関係の維持、強化を図るため継続して保有しています。","reciprocal":"有","pct_outstanding":0.0009564600339846319,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.020279862096937742,"pct_of_holder_assets":0.010998852976760995,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":138068000000,"holder_total_assets_yen":254572000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"新報国マテリアル株式会社","holder_name_en":"Shinhokoku Material Corp.","holder_sec_code":"5542","doc_id":"S100XWUB","period_end":"2025-12-31","holder_table":"reporting","shares":42260,"book_value_yen":27122000,"prior_shares":8452,"prior_book_value_yen":26894000,"purpose_ja":"取引関係等の円滑化のため。なお、期中に１株につき５株の割合をもって普通株式が分割されたため、株式数が増加しております。","reciprocal":"有","pct_outstanding":0.0008084000207238108,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.46709737952204583,"pct_of_holder_assets":0.3510772175713099,"holder_equity_basis":"parent_only","holder_equity_yen":5806498000,"holder_total_assets_yen":7725366000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"巴工業株式会社","holder_name_en":"TOMOE ENGINEERING CO.,LTD.","holder_sec_code":"6309","doc_id":"S100XHQ6","period_end":"2025-10-31","holder_table":"reporting","shares":27500,"book_value_yen":17498000,"prior_shares":5500,"prior_book_value_yen":16879000,"purpose_ja":"機械製造販売事業および化学工業製品販売事業における取引先であり、継続的取引関係の維持・強化および事業の拡大を目的として保有しております。また、増加は当事業年度に株式分割が行われたことによるものであります。","reciprocal":"無","pct_outstanding":0.0005260530186915475,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.040943355693378584,"pct_of_holder_assets":0.031032656239838415,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":42737093000,"holder_total_assets_yen":56385763000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"大同工業株式会社","holder_name_en":"ＤＡＩＤＯ　ＫＯＧＹＯ　ＣＯ.,　ＬＴＤ．","holder_sec_code":"6373","doc_id":"S100W0XG","period_end":"2025-03-31","holder_table":"reporting","shares":5600,"book_value_yen":17000000,"prior_shares":5600,"prior_book_value_yen":20000000,"purpose_ja":"製品販売取引を行っており、良好な取引関係の維持発展のため","reciprocal":"無","pct_outstanding":0.0005356704113012866,"pct_unavailable":null,"pct_basis_period_end":"2025-03-31","pct_share_classes":1,"pct_of_holder_equity":0.046211977057112566,"pct_of_holder_assets":0.021850057195737953,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":36787000000,"holder_total_assets_yen":77803000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本坩堝株式会社","holder_name_en":"Nippon Crucible Co., Ltd.","holder_sec_code":"5355","doc_id":"S100YINX","period_end":"2026-03-31","holder_table":"reporting","shares":28680,"book_value_yen":16516000,"prior_shares":5736,"prior_book_value_yen":18326000,"purpose_ja":"耐火物および耐火材料等の取引を行っており、事業上の関係を勘案し、同社との良好な関係の維持・強化を図るため、継続して保有しております。","reciprocal":"無","pct_outstanding":0.0005486254754935848,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2662271887014961,"pct_of_holder_assets":0.13649823674625758,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":6203724000,"holder_total_assets_yen":12099790000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"丸藤シートパイル株式会社","holder_name_en":"MARUFUJI SHEET PILING CO.,LTD.","holder_sec_code":"8046","doc_id":"S100YF98","period_end":"2026-03-31","holder_table":"reporting","shares":26050,"book_value_yen":15000000,"prior_shares":5210,"prior_book_value_yen":16000000,"purpose_ja":"（保有目的）建築・土木事業等における取引関係にあり、同社との良好な関係の維持・強化を図るため。（定量的な保有効果）保有の合理性を検証した方法などについては欄外に注記しております。（株式数が増加した理由）株式分割（１株→５株）が実施されたため。","reciprocal":"有","pct_outstanding":0.0004983156777059931,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.045825313903400236,"pct_of_holder_assets":0.03264062670003264,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":32733000000,"holder_total_assets_yen":45955000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"冨士ダイス株式会社","holder_name_en":"Fuji Die Co.,Ltd.","holder_sec_code":"6167","doc_id":"S100YEI1","period_end":"2026-03-31","holder_table":"reporting","shares":27000,"book_value_yen":15000000,"prior_shares":5400,"prior_book_value_yen":17000000,"purpose_ja":"・製品販売等を行っており、取引関係の維持・   強化のため保有しております。・業務上の提携その他これらに類する事項はあ  りません。・保有の効果については、保有に伴う便益や  リスクが資本コストに見合うものであること　を検証しております。","reciprocal":"無","pct_outstanding":0.0005164884183517012,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07336757153338225,"pct_of_holder_assets":0.05840211805014795,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":20445000000,"holder_total_assets_yen":25684000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社ＵＥＸ","holder_name_en":"ＵＥＸ，ＬＴＤ.","holder_sec_code":"9888","doc_id":"S100YDU2","period_end":"2026-03-31","holder_table":"reporting","shares":25070,"book_value_yen":14438000,"prior_shares":5014,"prior_book_value_yen":16020000,"purpose_ja":"保有目的は、取引先との関係強化の為であります。なお、株式分割により株式数が増加しております。","reciprocal":"有","pct_outstanding":0.00047956906103989444,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07598887777143222,"pct_of_holder_assets":0.0276893947987779,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":19000149000,"holder_total_assets_yen":52142707000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社ＡＩＲＭＡＮ","holder_name_en":"AIRMAN CORPORATION","holder_sec_code":"6364","doc_id":"S100YI16","period_end":"2026-03-31","holder_table":"reporting","shares":24500,"book_value_yen":14109000,"prior_shares":4900,"prior_book_value_yen":15655000,"purpose_ja":"産業機械事業における商品販売等の業務のより円滑な推進のため保有しております。株式数が増加した理由は、株式分割によるものであります。","reciprocal":"有","pct_outstanding":0.00046866541665246963,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.03122274247832095,"pct_of_holder_assets":0.02147802614793268,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":45188215000,"holder_total_assets_yen":65690394000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ナラサキ産業株式会社","holder_name_en":"NARASAKI SANGYO CO., LTD.","holder_sec_code":"8085","doc_id":"S100YHOM","period_end":"2026-03-31","holder_table":"reporting","shares":23437,"book_value_yen":13000000,"prior_shares":4458,"prior_book_value_yen":14000000,"purpose_ja":"電機・建材・海運など複数セグメントでの取引先で、取引関係の維持・強化を目的として保有しています。","reciprocal":"無","pct_outstanding":0.00044833107632995635,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0440424162347122,"pct_of_holder_assets":0.020773741990124484,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":29517000000,"holder_total_assets_yen":62579000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"トナミホールディングス株式会社","holder_name_en":"Tonami Holdings Co., Ltd.","holder_sec_code":"9070","doc_id":"S100W6N2","period_end":"2025-03-31","holder_table":"reporting","shares":3000,"book_value_yen":11000000,"prior_shares":3000,"prior_book_value_yen":13000000,"purpose_ja":"当社及び連結子会社での営業取引関係の維持・強化のため。","reciprocal":"無","pct_outstanding":0.0002869662917685464,"pct_unavailable":null,"pct_basis_period_end":"2025-03-31","pct_share_classes":1,"pct_of_holder_equity":0.011669477949990983,"pct_of_holder_assets":0.006403353028494921,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":94263000000,"holder_total_assets_yen":171785000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"明星工業株式会社","holder_name_en":"MEISEI INDUSTRIAL Co.,Ltd.","holder_sec_code":"1976","doc_id":"S100YFOI","period_end":"2026-03-31","holder_table":"reporting","shares":20075,"book_value_yen":11000000,"prior_shares":4015,"prior_book_value_yen":12000000,"purpose_ja":"営業取引関係の強化のため保有しております。株式数の増加は株式の分割によるものであります。（注）８当事業年度の受取配当金は0百万円であります。（注）１","reciprocal":"無","pct_outstanding":0.0003840187036448297,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.01582232962227784,"pct_of_holder_assets":0.01285091767234833,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":69522000000,"holder_total_assets_yen":85597000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"小池酸素工業株式会社","holder_name_en":"KOIKE SANSO KOGYO CO.,LTD.","holder_sec_code":"6137","doc_id":"S100YKGK","period_end":"2026-03-31","holder_table":"reporting","shares":18900,"book_value_yen":10000000,"prior_shares":3780,"prior_book_value_yen":12000000,"purpose_ja":"主に機械装置セグメントにおいて製品販売等を行っている重要な取引先グループで、当社の中長期的な企業価値の向上に資すると判断し、保有しています。","reciprocal":"無","pct_outstanding":0.00036154189284619086,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.019968449849238203,"pct_of_holder_assets":0.012640307412276267,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":50079000000,"holder_total_assets_yen":79112000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社パーカーコーポレーション","holder_name_en":"PARKER CORPORATION","holder_sec_code":"9845","doc_id":"S100YJ1T","period_end":"2026-03-31","holder_table":"reporting","shares":14185,"book_value_yen":8000000,"prior_shares":2837,"prior_book_value_yen":9000000,"purpose_ja":"（保有目的） 化学品部門と取引を行っており、事業上の関係を勘案し、同社との良好な関係の維持、強化を図るため、継続して保有しております。株式数が増加した理由は、同社の株式分割によるものです。（定量的な保有効果） （注）","reciprocal":"無","pct_outstanding":0.0002713477116414401,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.01478442460867476,"pct_of_holder_assets":0.01041815885087708,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":54111000000,"holder_total_assets_yen":76789000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"第一交通産業株式会社","holder_name_en":"DAIICHI KOUTSU SANGYO Co.,Ltd.","holder_sec_code":"9035","doc_id":"S100Y9O5","period_end":"2026-03-31","holder_table":"reporting","shares":15000,"book_value_yen":8000000,"prior_shares":3000,"prior_book_value_yen":9000000,"purpose_ja":"地域経済における重要な役割を持つ同社との関係維持及び発展を通じた、当社の中長期的な企業価値向上に資するため。株式分割による増加（注）４","reciprocal":"無","pct_outstanding":0.00028693801019538955,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.017279737347992312,"pct_of_holder_assets":0.004144669695729436,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":46297000000,"holder_total_assets_yen":193019000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"川田テクノロジーズ株式会社","holder_name_en":"KAWADA TECHNOLOGIES, INC.","holder_sec_code":"3443","doc_id":"S100YF5H","period_end":"2026-03-31","holder_table":"largest","shares":11025,"book_value_yen":6000000,"prior_shares":2205,"prior_book_value_yen":7000000,"purpose_ja":"建設資材仕入先として良好な取引関係の維持、強化のため保有しており、鋼材の安定供給を受けています。","reciprocal":"有（注）４","pct_outstanding":0.0002108994374936113,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.006029544769369913,"pct_of_holder_assets":0.0036812977801774388,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":99510000000,"holder_total_assets_yen":162986000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本製罐株式会社","holder_name_en":"NIHON SEIKAN K.K.","holder_sec_code":"5905","doc_id":"S100YK2J","period_end":"2026-03-31","holder_table":"reporting","shares":9540,"book_value_yen":5494000,"prior_shares":1908,"prior_book_value_yen":6096000,"purpose_ja":"取引関係の維持、強化のため、同社株式を保有しております。","reciprocal":"有","pct_outstanding":0.00018249257448426775,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.11312822819038489,"pct_of_holder_assets":0.042340115201488546,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":4856436000,"holder_total_assets_yen":12975874000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"知多鋼業株式会社","holder_name_en":"CHITA KOGYO CO.,LTD.","holder_sec_code":"5993","doc_id":"S100THI8","period_end":"2024-02-29","holder_table":"reporting","shares":1430,"book_value_yen":5312000,"prior_shares":1430,"prior_book_value_yen":4343000,"purpose_ja":"（保有目的等）自動車用部品関連の取引関係の維持強化、事業戦略や有益な情報収集など中長期観点から当社グループの企業価値の向上を図る（定量的な保有効果）（注）１","reciprocal":"無（注）２","pct_outstanding":0.00015522251497586553,"pct_unavailable":null,"pct_basis_period_end":"2024-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02242407832690034,"pct_of_holder_assets":0.017996464331681884,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":23688822000,"holder_total_assets_yen":29516909000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"扶桑電通株式会社","holder_name_en":"FUSO DENTSU CO., LTD.","holder_sec_code":"7505","doc_id":"S100XAQS","period_end":"2025-09-30","holder_table":"reporting","shares":1491,"book_value_yen":4543000,"prior_shares":1491,"prior_book_value_yen":4768000,"purpose_ja":"主にネットワーク部門の取引先として取引関係の維持・強化および事業活動上の必要性や取引状況を総合的に勘案し保有しております。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":"issuer share count changed over this window","pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.029485395156217425,"pct_of_holder_assets":0.011438851683315278,"holder_equity_basis":"parent_only","holder_equity_yen":15407628000,"holder_total_assets_yen":39715525000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"兼房株式会社","holder_name_en":"ＫＡＮＥＦＵＳＡ　ＣＯＲＰＯＲＡＴＩＯＮ","holder_sec_code":"5984","doc_id":"S100YEZU","period_end":"2026-03-31","holder_table":"reporting","shares":3675,"book_value_yen":2116000,"prior_shares":735,"prior_book_value_yen":2348000,"purpose_ja":"（保有目的）当社との取引関係があり、関係の維持、強化及び業界動向の情報収集のため（定量的な保有効果）定量的な保有効果の記載は困難","reciprocal":"無","pct_outstanding":7.029981249787044e-05,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0067519180345230415,"pct_of_holder_assets":0.005509922638967553,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":31339243000,"holder_total_assets_yen":38403443000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社テクノスマート","holder_name_en":"Techno Smart Corp.","holder_sec_code":"6246","doc_id":"S100YJ0X","period_end":"2026-03-31","holder_table":"reporting","shares":2500,"book_value_yen":1439000,"prior_shares":500,"prior_book_value_yen":1597000,"purpose_ja":"世界でもトップクラスの鉄鋼メーカーであり、当社とも長年の取引実績を有しています。良好な取引関係の維持、強化のため、株式を保有しております。株式数の増加の理由は、株式分割によるものであります。","reciprocal":"無","pct_outstanding":4.7823001699231595e-05,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.006928171519764956,"pct_of_holder_assets":0.004716852027369542,"holder_equity_basis":"parent_only","holder_equity_yen":20770271000,"holder_total_assets_yen":30507635000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社前田製作所","holder_name_en":"MAEDA SEISAKUSHO CO., LTD.","holder_sec_code":"6281","doc_id":"S100G1AU","period_end":"2019-03-31","holder_table":"reporting","shares":630,"book_value_yen":1231000,"prior_shares":630,"prior_book_value_yen":1471000,"purpose_ja":null,"reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":0.010713398318666596,"pct_of_holder_assets":0.0039237704788705275,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":11490285000,"holder_total_assets_yen":31372885000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社スパンクリートコーポレーション","holder_name_en":"SPANCRETE CORPORATION","holder_sec_code":"5277","doc_id":"S100TWJU","period_end":"2024-03-31","holder_table":"reporting","shares":330,"book_value_yen":1210000,"prior_shares":330,"prior_book_value_yen":1029000,"purpose_ja":"同社の完全子会社である日鉄ＳＧワイヤ株式会社とＰＣ鋼線等の取引を行っており、取引上の関係を勘案し、同社との良好な関係の維持、強化を図るため、継続して保有しています。","reciprocal":"無","pct_outstanding":3.5820580379045895e-05,"pct_unavailable":null,"pct_basis_period_end":"2024-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02212803684446148,"pct_of_holder_assets":0.018192572438763953,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5468176000,"holder_total_assets_yen":6651066000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東洋刄物株式会社","holder_name_en":"TOYO KNIFE CO., LTD.","holder_sec_code":"5964","doc_id":"S100OM10","period_end":"2022-03-31","holder_table":"reporting","shares":513,"book_value_yen":1000000,"prior_shares":513,"prior_book_value_yen":0,"purpose_ja":"当社の鉄鋼用刃物の販売活動における継続的取引関係の維持強化のために保有しております。定量的な保有効果については記載が困難であります。保有の合理性については定期的に検証しております。","reciprocal":"無","pct_outstanding":5.5689762092489594e-05,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.040453074433656956,"pct_of_holder_assets":0.014630577907827359,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":2472000000,"holder_total_assets_yen":6835000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東海リース株式会社","holder_name_en":"TOKAI LEASE CO.,LTD.","holder_sec_code":"9761","doc_id":"S100YJ2Z","period_end":"2026-03-31","holder_table":"reporting","shares":1050,"book_value_yen":604000,"prior_shares":210,"prior_book_value_yen":670000,"purpose_ja":"同社グループ会社からの仮設建物リース受注を中心として、安定的および長期的な取引関係の維持、強化のため、同社株式を保有しております。当事業年度の受取配当金額は29千円であります。株式数が増加した理由は、株式分割によるものであります。","reciprocal":"無","pct_outstanding":2.008566071367727e-05,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0034185201384794965,"pct_of_holder_assets":0.0015324653676147188,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":17668464000,"holder_total_assets_yen":39413615000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"大和重工株式会社","holder_name_en":"Daiwa Heavy Industry Co.,Ltd.","holder_sec_code":"5610","doc_id":"S100T551","period_end":"2023-12-31","holder_table":"reporting","shares":22,"book_value_yen":71000,"prior_shares":22,"prior_book_value_yen":50000,"purpose_ja":"産業機械関連事業の主要な取引先であり、今後も安定的な取引の維持と営業取引関係の強化を目的に保有しております。定量的な保有効果の記載は困難ですが、保有目的の適切性、リスクに対する資本コストの比較等により保有の合理性を検証しております。","reciprocal":"無","pct_outstanding":2.388038691936393e-06,"pct_unavailable":null,"pct_basis_period_end":"2024-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0025165525356925125,"pct_of_holder_assets":0.0011032291517271053,"holder_equity_basis":"parent_only","holder_equity_yen":2821320000,"holder_total_assets_yen":6435653000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社永谷園ホールディングス","holder_name_en":"NAGATANIEN HOLDINGS CO.,LTD.","holder_sec_code":"2899","doc_id":"S100TW63","period_end":"2024-03-31","holder_table":"reporting","shares":100,"book_value_yen":0,"prior_shares":100,"prior_book_value_yen":0,"purpose_ja":"・取引関係の維持・強化のために保有しています。・当社は保有株式について配当額・取引額等に加え経営戦略上の重要性等を総合的に判断し保有しています。定量的な保有効果については取引先との守秘義務等があるため記載しませんが、上記方針に基づいた十分な定量的効果があると判断しています。","reciprocal":"無","pct_outstanding":1.0854721326983604e-05,"pct_unavailable":null,"pct_basis_period_end":"2024-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0,"pct_of_holder_assets":0.0,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":46872000000,"holder_total_assets_yen":99894000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"八洲電機株式会社","holder_name_en":"Yashima Denki Co.,Ltd.","holder_sec_code":"3153","doc_id":"S100YE8H","period_end":"2026-03-31","holder_table":"reporting","shares":500,"book_value_yen":0,"prior_shares":100,"prior_book_value_yen":0,"purpose_ja":"プラント事業における事業機会の創出、取引関係の強化等を目的として保有しております。また、株式数が増加した理由は株式分割によるものであります。","reciprocal":"無","pct_outstanding":9.564600339846318e-06,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0,"pct_of_holder_assets":0.0,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":36342000000,"holder_total_assets_yen":72871000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"キヤノン株式会社","holder_name_en":"CANON INC.","holder_sec_code":"7751","doc_id":"S100XTLJ","period_end":"2025-12-31","holder_table":"reporting","shares":100,"book_value_yen":0,"prior_shares":100,"prior_book_value_yen":0,"purpose_ja":"株主への情報開示、株主総会運営に関する情報収集のため","reciprocal":"無","pct_outstanding":null,"pct_unavailable":"issuer share count changed over this window","pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0,"pct_of_holder_assets":0.0,"holder_equity_basis":"usgaap_consolidated_excl_nci","holder_equity_yen":3491808000000,"holder_total_assets_yen":6135044000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"川上塗料株式会社","holder_name_en":"KAWAKAMI PAINT MFG.CO.,LTD.","holder_sec_code":"4616","doc_id":"S100XMOI","period_end":"2025-11-30","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":109,"prior_book_value_yen":333000,"purpose_ja":"同社は当社の重要な顧客であり、取引関係の維持・強化のため、保有しておりましたが、保有の合理性を検証した結果、当事業年度に売却いたしました。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":3334764000,"holder_total_assets_yen":8674214000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"三井住友トラストグループ株式会社","holder_name_en":"Sumitomo Mitsui Trust Group, Inc.","holder_sec_code":"8309","doc_id":"S100YBGM","period_end":"2026-03-31","holder_table":"largest","shares":null,"book_value_yen":null,"prior_shares":1474800,"prior_book_value_yen":4711000000,"purpose_ja":"同上","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":3590969000000,"holder_total_assets_yen":82174280000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東プレ株式会社","holder_name_en":"Topre Corporation","holder_sec_code":"5975","doc_id":"S100YHLP","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":166800,"prior_book_value_yen":532000000,"purpose_ja":"当社グループの営業取引等に係る協力関係維持（プレス関連製品事業）、配当金の受取","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":247283000000,"holder_total_assets_yen":389387000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"大同メタル工業株式会社","holder_name_en":"Daido Metal Co., Ltd.","holder_sec_code":"7245","doc_id":"S100YRAI","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":10650,"prior_book_value_yen":34000000,"purpose_ja":"全株式を売却しました。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":91425000000,"holder_total_assets_yen":209434000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社　神戸製鋼所","holder_name_en":"Kobe Steel, Ltd.","holder_sec_code":"5406","doc_id":"S100YCDA","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":6744000,"prior_book_value_yen":21547000000,"purpose_ja":"2025年４月に、当社が保有する日本製鉄株式を全て売却いたしました。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":1330453000000,"holder_total_assets_yen":2865184000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社立花エレテック","holder_name_en":"TACHIBANA ELETECH CO., LTD.","holder_sec_code":"8159","doc_id":"S100YG86","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":109,"prior_book_value_yen":0,"purpose_ja":"取引関係の維持、強化のため、同社株式を保有しておりましたが、当連結会計年度において、売却しました。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":104975000000,"holder_total_assets_yen":179303000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本車輌製造株式会社","holder_name_en":"ＮＩＰＰＯＮ　ＳＨＡＲＹＯ，ＬＴＤ．","holder_sec_code":"7102","doc_id":"S100YK10","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":158643,"prior_book_value_yen":506000000,"purpose_ja":"当事業年度末日において保有しておりません","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":82248000000,"holder_total_assets_yen":152564000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"大平洋金属株式会社","holder_name_en":"Pacific Metals Co., Ltd.","holder_sec_code":"5541","doc_id":"S100YDBT","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":18126,"prior_book_value_yen":57000000,"purpose_ja":"　当社のニッケル事業における販売先との取引強化のため保有しております。定量的な保有効果については記載が困難であります。保有の合理性は、定量的指標・定性的指標により総合的に検証しておりましたが、保有のねらいや合理性等を検証した結果、当事業年度中に保有株式を全て売却いたしました。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":63192000000,"holder_total_assets_yen":67327000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"栗田工業株式会社","holder_name_en":"Kurita Water Industries Ltd.","holder_sec_code":"6370","doc_id":"S100YBAT","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":14165,"prior_book_value_yen":45000000,"purpose_ja":"水処理薬品等の取引を行っており、同社との良好な関係の維持・強化のために中長期的に保有しておりましたが、保有の適否を判断した結果、売却しております。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":341151000000,"holder_total_assets_yen":564422000000,"implausible":false,"reciprocal_held_both_ways":false}],"reclassified":[],"reclassified_note":"As filed, from the annual report's 保有目的を変更した投資株式 table. direction=to_pure means the filer moved the holding from a policy shareholding to 純投資目的 (pure investment); the shares are not necessarily sold, and the position leaves the named policy table in the year of the change. direction=to_policy is the reverse. fy_of_change_ja is the fiscal year the filer states the change took effect, verbatim — some filers list more than one. A filing repeats these rows for several years after the change, so this is a standing disclosure, not a one-year event.","implausible_note":"A row is flagged implausible when its two filed numbers are mutually impossible — book value ÷ shares of ¥1,000,000 or more, which no listed Japanese share reaches. It is a filer tagging error (a value entered at the wrong scale, or a share count in thousands), not an extraction error: the values match the filing's XBRL exactly. Flagged rows are still returned, exactly as filed, but are excluded from the yen aggregates here and counted in excluded_positions / excluded_yen so the exclusion is visible.","notes":[{"holder_table":"reporting","note_no":"1","text_ja":"（注）１　「－」は、当該銘柄を保有していないことを示している。「*」は、当該銘柄の貸借対照表計上額が当社の資本金額の100分の1以下であり、かつ貸借対照表計上額の大きい順の60銘柄に該当しないために記載を省略していることを示している。"},{"holder_table":"reporting","note_no":"2","text_ja":"２　貸借対照表計上額の上位銘柄を選定する段階で、特定投資株式とみなし保有株式を合算していない。"},{"holder_table":"reporting","note_no":"3","text_ja":"３　㈱三菱UFJフィナンシャル・グループ、㈱三井住友フィナンシャルグループ、㈱みずほフィナンシャルグループ、三井住友トラストグループ㈱、宮地エンジニアリンググループ㈱は、同社子会社が当社株式を保有している。"}],"notes_note":"The filing's own numbered footnotes to the named policy table, verbatim. The XBRL numbers them (注)1, (注)2 … and gives no link back to a row, so a note is tied to a position only where it names that issuer.","flows":[{"holder_table":"reporting","share_class":"listed","issues_increased":7,"acquisition_cost_yen":3629000000,"issues_decreased":11,"sale_proceeds_yen":16853000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":22,"acquisition_cost_yen":621000000,"issues_decreased":5,"sale_proceeds_yen":22000000,"entity_scope":"parent_only","share_scope":"unlisted"}],"flows_note":"The filer's own tally, as filed, of how many issues increased or decreased during the year and the yen involved — acquisition cost for increases, sale proceeds for decreases. Read against the reclassification table this separates what was actually sold from what merely changed category. Counts are as filed and are not corrected for filer tagging errors.","no_reduction_measure":"This product holds sale proceeds (売却価額), as filed, for one fiscal year. It does NOT hold a book-value-reduction measure. The two are different measures and must never be presented as equivalent.","scale":{"policy_total_yen":300444000000,"listed_yen":289464000000,"unlisted_yen":10980000000,"listed_issues":68,"unlisted_issues":182,"equity_yen":5530448000000,"equity_basis":"ifrs_consolidated_excl_nci","total_assets_yen":14660583000000,"assets_basis":"ifrs_consolidated","pct_of_equity":5.432543620336002,"pct_of_assets":2.0493318717270657,"equity_basis_label":"Consolidated equity attributable to owners of the parent (IFRS)","assets_basis_label":"Consolidated total equity (IFRS)","equity_calc":"total policy shareholdings ÷ shareholders' equity × 100, both as filed in this annual securities report","assets_calc":"total policy shareholdings ÷ total assets × 100, both as filed in this annual securities report"},"scale_entities":[{"holder_table":"reporting","share_class":"listed","book_value_yen":289464000000,"issue_count":68,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":10980000000,"issue_count":182,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"unlisted"}],"scale_history":[{"year":"2022","period_end":"2022-03-31","policy_total_yen":255941000000,"equity_yen":3466799000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":7.382631643772829,"pct_of_assets":2.9242559652006443},{"year":"2023","period_end":"2023-03-31","policy_total_yen":219225000000,"equity_yen":4181155000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":5.243168454649493,"pct_of_assets":2.2914469684070373},{"year":"2024","period_end":"2024-03-31","policy_total_yen":269787000000,"equity_yen":4777727000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":5.646764664452364,"pct_of_assets":2.517931795479208},{"year":"2025","period_end":"2025-03-31","policy_total_yen":223281000000,"equity_yen":5383311000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":4.147651881899448,"pct_of_assets":2.040501320635638},{"year":"2026","period_end":"2026-03-31","policy_total_yen":300444000000,"equity_yen":5530448000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":5.432543620336002,"pct_of_assets":2.0493318717270657}],"scale_note":"The policy total is Official (as filed) — the filing's own total carrying amount for the whole policy bucket, listed and unlisted, summed across the entities the filing discloses. It is a floor: holdings at group companies the filing does not name are disclosed nowhere and are not included. The percentages are calculated, not filed, and carry their formula. equity_basis names which figure the denominator is, because filers report under Japanese, IFRS or US accounting standards and an adopter of the latter two stops tagging the Japanese consolidated figure — a parent-only denominator is a different measure and is labelled as one, never silently mixed with a group figure. Percentages are null where equity or total assets is missing or not positive; missing is never shown as zero.","scale_reference":"ISS's Japan proxy voting guidelines recommend a vote against the top executive at a company that allocates 20 percent or more of its net assets to cross-shareholdings, a policy effective from February 2022. ISS counts unilateral holdings, not only mutual ones.","ownership_calc":"shares held ÷ (issuer's issued shares − treasury shares) × 100, both as filed, the denominator taken from the issuer's own annual securities report nearest the holding's fiscal year end","ownership_note":"Derived, not filed. The denominator is the issuer's own reported issued shares less treasury shares, from its annual report nearest this holding's fiscal year end on either side — pct_basis_period_end gives that date, and it can fall after the holding's date where that report is the closer one. For a single-class listed stock this equals the stake's share of market capitalisation. It is null where the issuer files no annual report we hold; where the issuer's share count moves by half or more across the window, because a split or issue makes the share base indeterminate; and where the result would exceed 100%, which is a data fault rather than a stake. It is less exact where the issuer has more than one share class (pct_share_classes > 1), because treasury shares are reported across all classes.","holder_share_calc":"this position's book value ÷ the holder's shareholders' equity (or total assets) × 100, both as filed in the holder's own annual securities report","holder_share_note":"The mirror of pct_outstanding. That sizes a stake against the ISSUER — how much of the issuer this holder owns. pct_of_holder_equity and pct_of_holder_assets size the same position against the HOLDER: how much of its own capital is committed to this one name. Calculated, not filed. Null where the holder's filing gives no usable denominator, never zero. holder_equity_basis says which accounting figure the denominator is, and a parent_only basis is not comparable with a consolidated one. A position CAN legitimately exceed 100% of equity — a holder whose book equity is smaller than one long-held stake is a real and commercially interesting case, not an error — so no ceiling is imposed. Extreme values are worth checking against the filing: where the position's own two filed numbers are mutually impossible the row is marked `implausible`, but that test catches only scale errors visible per share, so it does not catch every bad figure. The book value and share count are returned alongside so the reader can check.","action_calc":"keyword match over the filing's own stated purpose and table footnotes: 株式分割、株式併合、株式交換、株式移転、会社分割、合併、持株会社、商号変更、公開買付、上場廃止","ratio_calc":"current shares ÷ prior shares where that ratio is an exact whole number (or its exact reciprocal) — the signature of a split or a consolidation rather than a trade","history":[{"year":"2022","period_end":"2022-03-31","named_holdings":56,"book_value_yen":237286000000},{"year":"2023","period_end":"2023-03-31","named_holdings":58,"book_value_yen":203760000000},{"year":"2024","period_end":"2024-03-31","named_holdings":53,"book_value_yen":255284000000},{"year":"2025","period_end":"2025-03-31","named_holdings":53,"book_value_yen":210846000000},{"year":"2026","period_end":"2026-03-31","named_holdings":54,"book_value_yen":285857000000}],"history_note":"One point per annual report filed. Each year's book value is as filed; book values are fair-valued at period end, so a change reflects both trading and market moves.","provenance":{"trust":"official","note":"Figures exactly as filed in each company's 有価証券報告書 (annual securities report), EDINET. Raw filings archived with SHA-256; doc_id links to the source filing."}}