{"entity":{"edinet_code":"E00115","sec_code":"1950","name_ja":"日本電設工業株式会社","name_en":"NIPPON DENSETSU KOGYO CO., LTD.","industry":"建設業","industry_en":"Construction"},"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":"S100YGLL","filer_name":"日本電設工業株式会社","filer_name_en":"NIPPON DENSETSU KOGYO CO., LTD.","period_end":"2026-03-31","filed_date":"2026-06-23","sha256":"c145107cd9c305b3194c8b410e8c6ad27c93056b803249d8a3ff9c14cb176075","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":"東鉄工業㈱","held_name_en":"TOTETSU KOGYO CO.,LTD.","held_sec_code":"1835","match_status":"matched","shares":1088149,"book_value_yen":5843000000,"prior_shares":1088149,"prior_book_value_yen":3324000000,"purpose_ja":"（保有目的）鉄道関連の工事会社として良好な取引関係を維持することで、営業・施工面での協力体制の強化及び駅ビル工事等の受注による収益向上のために保有している（定量的な保有効果）当期受取配当金：168百万円（注）２ ","reciprocal":"有","pct_outstanding":3.1516159957366328,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":2.5324410772951467,"pct_of_holder_assets":1.750486079696099,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"新日本空調㈱","held_name_en":"Shin Nippon Air Technologies Co., Ltd.","held_sec_code":"1952","match_status":"matched","shares":1521400,"book_value_yen":4959000000,"prior_shares":1521400,"prior_book_value_yen":2656000000,"purpose_ja":"（保有目的）当社と同様に空調衛生工事を営んでおり良好な取引関係を維持することで、施工技術に関する情報交換及び社員教育等における協業を継続するために保有している（定量的な保有効果）当期受取配当金：136百万円（注）２","reciprocal":"有","pct_outstanding":3.347521538090874,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":2.149302636027149,"pct_of_holder_assets":1.4856512868753988,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"日本リーテック㈱","held_name_en":"NIPPON RIETEC CO.,LTD.","held_sec_code":"1938","match_status":"matched","shares":1045684,"book_value_yen":2636000000,"prior_shares":1045684,"prior_book_value_yen":1554000000,"purpose_ja":"（保有目的）鉄道関連の電気設備工事会社として良好な取引関係を維持することで、施工技術に関する情報交換及び大型工事等における協業を継続するために保有している（定量的な保有効果）当期受取配当金：80百万円（注）２","reciprocal":"有","pct_outstanding":4.219765795177739,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.1424806913828525,"pct_of_holder_assets":0.789710988546794,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"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":961000,"book_value_yen":2368000000,"prior_shares":961000,"prior_book_value_yen":1890000000,"purpose_ja":"（保有目的）オフィスビルの改修工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：97百万円（注）２","reciprocal":"有","pct_outstanding":1.017820641383543,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.0263255983287536,"pct_of_holder_assets":0.7094217074654052,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"大同信号㈱","held_name_en":"Daido Signal Co., Ltd.","held_sec_code":"6743","match_status":"matched","shares":2395273,"book_value_yen":1774000000,"prior_shares":2395273,"prior_book_value_yen":1226000000,"purpose_ja":"（保有目的）鉄道信号をはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：35百万円（注）２","reciprocal":"有","pct_outstanding":14.92893514911652,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.7688773696939226,"pct_of_holder_assets":0.5314671068596406,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"因幡電機産業㈱","held_name_en":"INABA DENKI SANGYO CO.,LTD.","held_sec_code":"9934","match_status":"matched","shares":477600,"book_value_yen":1241000000,"prior_shares":238800,"prior_book_value_yen":907000000,"purpose_ja":"（保有目的）電設資材をはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：35百万円（注）２（株式が増加した理由）株式分割のため","reciprocal":"有","pct_outstanding":0.42546330156315004,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5378674271646888,"pct_of_holder_assets":0.37178730530598303,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":["share split"],"note_refs":[],"share_ratio":2.0,"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":320000,"book_value_yen":1204000000,"prior_shares":320000,"prior_book_value_yen":1168000000,"purpose_ja":"（保有目的）鉄道関連工事及び駅ビル工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：34百万円（注）２","reciprocal":"無","pct_outstanding":0.2069205884045582,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.521831089690802,"pct_of_holder_assets":0.3607025911268361,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"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":300000,"book_value_yen":938000000,"prior_shares":300000,"prior_book_value_yen":874000000,"purpose_ja":"（保有目的）鉄道関連工事及び駅ビル工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：27百万円（注）２","reciprocal":"無","pct_outstanding":0.06600339125424265,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.4065428256893458,"pct_of_holder_assets":0.28101248378486066,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"エクシオグループ㈱","held_name_en":"EXEO Group, Inc.","held_sec_code":"1951","match_status":"matched","shares":329000,"book_value_yen":877000000,"prior_shares":658000,"prior_book_value_yen":1105000000,"purpose_ja":"（保有目的）携帯電話基地局工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：42百万円（注）２","reciprocal":"有","pct_outstanding":0.16121449849712316,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3801045395837487,"pct_of_holder_assets":0.26273768473275355,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":0.5,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱ミライト・ワン","held_name_en":"MIRAIT ONE Corporation","held_sec_code":"1417","match_status":"matched","shares":215000,"book_value_yen":767000000,"prior_shares":215000,"prior_book_value_yen":468000000,"purpose_ja":"（保有目的）携帯電話基地局工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している （定量的な保有効果）当期受取配当金：17百万円（注）２","reciprocal":"有","pct_outstanding":0.24127610415267708,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.33242894168840964,"pct_of_holder_assets":0.22978312906501933,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"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":2008750,"book_value_yen":630000000,"prior_shares":2008750,"prior_book_value_yen":686000000,"purpose_ja":"（保有目的）コンクリート柱をはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：21百万円（注）２","reciprocal":"有","pct_outstanding":3.6964056602197304,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.27305115158239646,"pct_of_holder_assets":0.18873972791520494,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"第一建設工業㈱","held_name_en":"DAIICHI KENSETSU CORPORATION","held_sec_code":"1799","match_status":"matched","shares":162576,"book_value_yen":616000000,"prior_shares":162576,"prior_book_value_yen":425000000,"purpose_ja":"（保有目的）鉄道関連の工事会社として良好な取引関係を維持することで、営業・施工面での協力体制の強化及び鉄道施設関連工事等の受注による収益向上のために保有している（定量的な保有効果）当期受取配当金：21百万円（注）２","reciprocal":"有","pct_outstanding":0.9184311084303577,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.26698334821389874,"pct_of_holder_assets":0.1845455117393115,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱大和証券グループ本社","held_name_en":"Daiwa Securities Group Inc.","held_sec_code":"8601","match_status":"matched","shares":399366,"book_value_yen":583000000,"prior_shares":399366,"prior_book_value_yen":396000000,"purpose_ja":"（保有目的）オフィスビルの改修工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：22百万円（注）２","reciprocal":"無（注）３","pct_outstanding":0.02882162270959407,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.252680668845297,"pct_of_holder_assets":0.17465914503899124,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":["3"],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱オリエンタルランド","held_name_en":"ORIENTAL LAND CO., LTD.","held_sec_code":"4661","match_status":"matched","shares":150000,"book_value_yen":405000000,"prior_shares":150000,"prior_book_value_yen":441000000,"purpose_ja":"（保有目的）一般電気工事における案件を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している (定量的な保有効果）当期受取配当金：２百万円（注）２","reciprocal":"無","pct_outstanding":0.009126238696773115,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.175532883160112,"pct_of_holder_assets":0.12133268223120316,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"日本信号㈱","held_name_en":"Nippon Signal Co., Ltd.","held_sec_code":"6741","match_status":"matched","shares":236250,"book_value_yen":378000000,"prior_shares":236250,"prior_book_value_yen":211000000,"purpose_ja":"（保有目的）鉄道信号をはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：10百万円（注）２","reciprocal":"有","pct_outstanding":0.37878178135468205,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.16383069094943786,"pct_of_holder_assets":0.11324383674912296,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"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":315000,"book_value_yen":370000000,"prior_shares":315000,"prior_book_value_yen":424000000,"purpose_ja":"（保有目的）鉄道関連工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：７百万円（注）２","reciprocal":"無","pct_outstanding":0.06478843885479503,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.16036337473886775,"pct_of_holder_assets":0.11084714179146957,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"電気興業㈱","held_name_en":"DKK Co., Ltd.","held_sec_code":"6706","match_status":"matched","shares":111000,"book_value_yen":333000000,"prior_shares":111000,"prior_book_value_yen":197000000,"purpose_ja":"（保有目的）携帯電話基地局アンテナをはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：９百万円（注）２","reciprocal":"有","pct_outstanding":1.263603661035472,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.14432703726498097,"pct_of_holder_assets":0.09976242761232261,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"古河電気工業㈱","held_name_en":"Furukawa Electric Co., Ltd.","held_sec_code":"5801","match_status":"matched","shares":10800,"book_value_yen":310000000,"prior_shares":10800,"prior_book_value_yen":53000000,"purpose_ja":"（保有目的）各種電線ケーブルをはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：１百万円（注）２","reciprocal":"有","pct_outstanding":0.01531013289663164,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.13435850315959189,"pct_of_holder_assets":0.09287192960906909,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"セントラル警備保障㈱","held_name_en":"CENTRAL SECURITY PATROLS CO.,LTD.","held_sec_code":"9740","match_status":"matched","shares":90000,"book_value_yen":269000000,"prior_shares":90000,"prior_book_value_yen":252000000,"purpose_ja":"（保有目的）ＪＲ東日本関連の警備会社として良好な取引関係を維持することで、営業・施工面での協力体制の強化及び駅ビル工事等の受注による収益向上のために保有している（定量的な保有効果）当期受取配当金：５百万円（注）２","reciprocal":"有","pct_outstanding":0.6413594768559019,"pct_unavailable":null,"pct_basis_period_end":"2026-02-28","pct_share_classes":1,"pct_of_holder_equity":0.11658850758042007,"pct_of_holder_assets":0.08058886795109543,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"東急㈱","held_name_en":"TOKYU CORPORATION","held_sec_code":"9005","match_status":"matched","shares":83777,"book_value_yen":155000000,"prior_shares":83777,"prior_book_value_yen":141000000,"purpose_ja":"（保有目的）鉄道関連工事及び駅ビル工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：２百万円（注）２","reciprocal":"無","pct_outstanding":0.014620268400743083,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.06717925157979594,"pct_of_holder_assets":0.046435964804534546,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱明電舎","held_name_en":"MEIDENSHA CORPORATION","held_sec_code":"6508","match_status":"matched","shares":20000,"book_value_yen":150000000,"prior_shares":20000,"prior_book_value_yen":86000000,"purpose_ja":"（保有目的）変電・配電システムをはじめとする資材調達等を行っており良好な取引関係を維持することで、施工に必要な資材を安定的に調達するために保有している（定量的な保有効果）当期受取配当金：２百万円（注）２","reciprocal":"有","pct_outstanding":0.0440877840686147,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.06501217894818963,"pct_of_holder_assets":0.04493803045600117,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"小田急電鉄㈱","held_name_en":"Odakyu Electric Railway Co., Ltd.","held_sec_code":"9007","match_status":"matched","shares":72640,"book_value_yen":119000000,"prior_shares":72640,"prior_book_value_yen":107000000,"purpose_ja":"（保有目的）鉄道関連工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：３百万円（注）２","reciprocal":"無","pct_outstanding":0.021170879198021915,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.05157632863223044,"pct_of_holder_assets":0.03565083749509426,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"鉄建建設㈱","held_name_en":"TEKKEN CORPORATION","held_sec_code":"1815","match_status":"matched","shares":10623,"book_value_yen":48000000,"prior_shares":10623,"prior_book_value_yen":26000000,"purpose_ja":"（保有目的）鉄道関連の工事会社として良好な取引関係を維持することで、営業・施工面での協力体制の強化及び駅ビル工事等の受注による収益向上のために保有している （定量的な保有効果）当期受取配当金：１百万円（注）２","reciprocal":"有","pct_outstanding":0.07637305422335873,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02080389726342068,"pct_of_holder_assets":0.014380169745920376,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"第一生命ホールディングス㈱","held_name_en":"Daiichi Life Group, Inc.","held_sec_code":"8750","match_status":"matched","shares":19600,"book_value_yen":27000000,"prior_shares":4900,"prior_book_value_yen":22000000,"purpose_ja":"（保有目的）オフィスビルの改修工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：０百万円（注）２（株式が増加した理由）株式分割のため","reciprocal":"無（注）４","pct_outstanding":0.0005415814315240607,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.011702192210674133,"pct_of_holder_assets":0.008088845482080212,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":["share split"],"note_refs":["4","5"],"share_ratio":4.0,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"相鉄ホールディングス㈱","held_name_en":"Sotetsu Holdings,Inc.","held_sec_code":"9003","match_status":"matched","shares":2617,"book_value_yen":7000000,"prior_shares":2617,"prior_book_value_yen":5000000,"purpose_ja":"（保有目的）鉄道関連工事等を受注しており良好な取引関係を維持することで、中長期的な工事受注による収益向上のため保有している（定量的な保有効果）当期受取配当金：０百万円（注）２","reciprocal":"無","pct_outstanding":0.0027269194222611175,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0030339016842488493,"pct_of_holder_assets":0.0020971080879467214,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"能美防災㈱","held_name_en":"ＮＯＨＭＩ  ＢＯＳＡＩ  ＬＴＤ．","held_sec_code":"6744","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":2733,"prior_book_value_yen":8000000,"purpose_ja":"－","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":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱ｍｅｉｔｏ","held_name_en":"MEITO CO.,LTD.","held_sec_code":"2207","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":110000,"prior_book_value_yen":219000000,"purpose_ja":"－","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":230726000000,"holder_total_assets_yen":333793000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"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":2730240,"book_value_yen":13009593000,"prior_shares":3040296,"prior_book_value_yen":6387661000,"purpose_ja":"取引関係維持、強化のため","reciprocal":"有","pct_outstanding":4.5961455128922415,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":26.853023951500063,"pct_of_holder_assets":14.83553660297959,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":48447404000,"holder_total_assets_yen":87692096000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"新日本空調株式会社","holder_name_en":"Shin Nippon Air Technologies Co., Ltd.","holder_sec_code":"1952","doc_id":"S100YDMT","period_end":"2026-03-31","holder_table":"reporting","shares":1000000,"book_value_yen":4765000000,"prior_shares":1000000,"prior_book_value_yen":2101000000,"purpose_ja":"設備工事事業において、主にビル空調工事の取引を行っており、取引・協業関係の構築・維持・強化のために保有しております。保有の合理性の検証については、（a）をご参照ください。","reciprocal":"有","pct_outstanding":1.6834217918176577,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":5.763950211082752,"pct_of_holder_assets":3.5194362993108848,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":82669000000,"holder_total_assets_yen":135391000000,"implausible":false,"reciprocal_held_both_ways":true},{"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":840000,"book_value_yen":4002000000,"prior_shares":840000,"prior_book_value_yen":1764000000,"purpose_ja":"オフィス環境事業における取引関係の維持・強化を図るため、保有しております。同社の全国の事業所向けに、オフィス家具の販売、電気工事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。","reciprocal":"有","pct_outstanding":1.4140743051268325,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.9418794792541088,"pct_of_holder_assets":1.3257055025722397,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":206089000000,"holder_total_assets_yen":301877000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本リーテック株式会社","holder_name_en":"NIPPON RIETEC CO.,LTD.","holder_sec_code":"1938","doc_id":"S100YI6M","period_end":"2026-03-31","holder_table":"reporting","shares":704648,"book_value_yen":3357647000,"prior_shares":704648,"prior_book_value_yen":1480465000,"purpose_ja":"電気設備工事における大型工事等において円滑な協業を継続するため","reciprocal":"有","pct_outstanding":1.1862197987607288,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":4.847214896378878,"pct_of_holder_assets":3.313394594026079,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":69269613000,"holder_total_assets_yen":101335561000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東鉄工業株式会社","holder_name_en":"TOTETSU KOGYO CO.,LTD.","holder_sec_code":"1835","doc_id":"S100YA1U","period_end":"2026-03-31","holder_table":"reporting","shares":672631,"book_value_yen":3205000000,"prior_shares":672631,"prior_book_value_yen":1413000000,"purpose_ja":"JR東日本関連の鉄道電気設備会社として工事で連携しており、良好な関係を維持することで、施工技術に関する情報交換等による当社施工力の強化を図るため及び安定株主確保のため、継続して保有しています。","reciprocal":"有","pct_outstanding":1.1323216832521028,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":2.392236857752327,"pct_of_holder_assets":1.57226945631452,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":133975028000,"holder_total_assets_yen":203845466000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"因幡電機産業株式会社","holder_name_en":"INABA DENKI SANGYO CO.,LTD.","holder_sec_code":"9934","doc_id":"S100YFJE","period_end":"2026-03-31","holder_table":"reporting","shares":654500,"book_value_yen":3118000000,"prior_shares":654500,"prior_book_value_yen":1375000000,"purpose_ja":"・日本電設工業㈱は電設資材事業における得意先の１社であり、受配電設備を中心に販売している。・大都市圏における再開発需要の拡大等を背景に、将来に向けて取引量がさらに増加する可能性がある。・株式の保有によって取引関係が強化され、同社からの受注の安定と拡大に寄与していると認識している。・同社株式を保有しない場合、取引関係が弱体化し、受注が縮小するリスクがある。","reciprocal":"有","pct_outstanding":1.1017995627446568,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.5796619786811494,"pct_of_holder_assets":0.9951328492779064,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":197384000000,"holder_total_assets_yen":313325000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"大同信号株式会社","holder_name_en":"Daido Signal Co., Ltd.","holder_sec_code":"6743","doc_id":"S100YEMV","period_end":"2026-03-31","holder_table":"reporting","shares":517024,"book_value_yen":2463619000,"prior_shares":517024,"prior_book_value_yen":1086267000,"purpose_ja":"当社製品の主要な販売先であり、取引の維持・強化を通じて収益基盤の安定を図ることにより、当社の持続的な成長と中長期的な企業価値を向上させるために必要と判断し、株式を保有しております。","reciprocal":"有","pct_outstanding":0.8703694684927327,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":7.47068591078197,"pct_of_holder_assets":4.831189602629092,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":32977146000,"holder_total_assets_yen":50994045000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"古河電気工業株式会社","holder_name_en":"Furukawa Electric Co., Ltd.","holder_sec_code":"5801","doc_id":"S100YCF0","period_end":"2026-03-31","holder_table":"reporting","shares":307871,"book_value_yen":1467000000,"prior_shares":307871,"prior_book_value_yen":646000000,"purpose_ja":"　2025年12月開催の取締役会等における保有合理性検証の結果、当社インフラセグメントにおける事業強化のため、同社との取引関係及び協力関係の維持・強化が必要であると定量的・定性的に判断し、同社株式の保有を継続しておりますが、定量的な保有効果については、発行体との関係性を考慮し、記載いたしません。","reciprocal":"有","pct_outstanding":0.518276750468694,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3370623875597097,"pct_of_holder_assets":0.1375692535062811,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":435231000000,"holder_total_assets_yen":1066372000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本信号株式会社","holder_name_en":"Nippon Signal Co., Ltd.","holder_sec_code":"6741","doc_id":"S100YAO1","period_end":"2026-03-31","holder_table":"reporting","shares":252551,"book_value_yen":1203000000,"prior_shares":252551,"prior_book_value_yen":530000000,"purpose_ja":"同社株式は鉄道信号システム及びＡＦＣシステムの取引維持強化を目的に保有しております。中長期的な当社グループの企業価値向上に資するものと判断しております。","reciprocal":"有","pct_outstanding":0.42514985694534124,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.0521620486985725,"pct_of_holder_assets":0.6985089186176142,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":114336000000,"holder_total_assets_yen":172224000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社ミライト・ワン","holder_name_en":"MIRAIT ONE Corporation","holder_sec_code":"1417","doc_id":"S100YG40","period_end":"2026-03-31","holder_table":"reporting","shares":225000,"book_value_yen":1072000000,"prior_shares":225000,"prior_book_value_yen":472000000,"purpose_ja":"保有先企業は、当社が工事を請け負っている重要顧客の一つであり、企業／環境社会基盤ドメインにおける中期的な工事受注量の確保等に資するため、保有しております。","reciprocal":"有","pct_outstanding":0.37876990315897296,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.37164539759470544,"pct_of_holder_assets":0.18695728758460603,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":288447000000,"holder_total_assets_yen":573393000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"第一建設工業株式会社","holder_name_en":"DAIICHI KENSETSU CORPORATION","holder_sec_code":"1799","doc_id":"S100YILN","period_end":"2026-03-31","holder_table":"reporting","shares":195000,"book_value_yen":929175000,"prior_shares":195000,"prior_book_value_yen":409695000,"purpose_ja":"当社と同様な鉄道メンテナンス工事を施工している同社との工事施工や技術開発などの協力体制強化のため保有しております。取締役会において年間１回以上、取引の変化の有無、営業利益、営業キャッシュ・フローなどの業績の状況、株価や１株当たり配当額の推移などから、保有の合理性を判断しております。保有効果の定量的な記載が難しい銘柄です。（注）１","reciprocal":"有","pct_outstanding":0.32826724940444324,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.2438310937412715,"pct_of_holder_assets":1.07619332950432,"holder_equity_basis":"parent_only","holder_equity_yen":74702667000,"holder_total_assets_yen":86339041000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"住友電気工業株式会社","holder_name_en":"Sumitomo Electric Industries, Ltd.","holder_sec_code":"5802","doc_id":"S100YL2M","period_end":"2026-03-31","holder_table":"reporting","shares":170000,"book_value_yen":810000000,"prior_shares":170000,"prior_book_value_yen":357000000,"purpose_ja":"主に環境エネルギー関連事業の販売で取引があり、取引関係の維持・強化のために保有しております。","reciprocal":"無","pct_outstanding":0.28618170460900183,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.028571438649537442,"pct_of_holder_assets":0.016789193231592205,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":2834999000000,"holder_total_assets_yen":4824532000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"エクシオグループ株式会社","holder_name_en":"EXEO Group, Inc.","holder_sec_code":"1951","doc_id":"S100YI51","period_end":"2026-03-31","holder_table":"reporting","shares":164500,"book_value_yen":783000000,"prior_shares":164500,"prior_book_value_yen":345000000,"purpose_ja":"同社株式は、鉄道設備工事に係るパートナーとして、都市インフラ事業の円滑化のため、保有しております。","reciprocal":"有","pct_outstanding":0.2769228847540047,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.22582022057127035,"pct_of_holder_assets":0.11328878947383651,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":346736000000,"holder_total_assets_yen":691154000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"セントラル警備保障株式会社","holder_name_en":"CENTRAL SECURITY PATROLS CO.,LTD.","holder_sec_code":"9740","doc_id":"S100Y6FE","period_end":"2026-02-28","holder_table":"reporting","shares":130000,"book_value_yen":689000000,"prior_shares":130000,"prior_book_value_yen":273390000,"purpose_ja":"セキュリティ事業における営業取引の強化・拡大を目的として保有しております。年間売上高及び取引状況により、保有効果を検証しており、今後も継続的に保有効果があるものと判断しております。","reciprocal":"有","pct_outstanding":0.2188448329362955,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.5592025708512172,"pct_of_holder_assets":0.9604575313001819,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":44189255000,"holder_total_assets_yen":71736644000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"電気興業株式会社","holder_name_en":"DKK Co., Ltd.","holder_sec_code":"6706","doc_id":"S100YH6S","period_end":"2026-03-31","holder_table":"reporting","shares":136900,"book_value_yen":652000000,"prior_shares":136900,"prior_book_value_yen":287000000,"purpose_ja":"電気通信関連事業において基地局アンテナ等の受発注取引があり、移動通信関連分野での事業活動の円滑化のため保有しております。上記目的に対する定量的な保有効果の記載は困難ですが、毎年複数回の取締役会において、保有状況・目的に加えて、配当利回り等の定量的な観点に基づき報告した上で、保有の意義を検証しております。","reciprocal":"有","pct_outstanding":0.23046044329983734,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.7524526273350356,"pct_of_holder_assets":1.2290987237732576,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":37205000000,"holder_total_assets_yen":53047000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"鉄建建設株式会社","holder_name_en":"TEKKEN CORPORATION","holder_sec_code":"1815","doc_id":"S100YGCF","period_end":"2026-03-31","holder_table":"reporting","shares":120000,"book_value_yen":571000000,"prior_shares":124716,"prior_book_value_yen":262000000,"purpose_ja":"建設工事を受注しており、良好な取引関係の維持、発展を図るため、株式を継続して保有しています。定量的な保有効果の記載は困難ですが、建設工事の発注者として、過去の受注実績や今後の営業案件が期待できることにより保有の合理性があることを確認しています。なお、政策保有株の縮減方針に従い、保有株式の一部を売却しております。","reciprocal":"有","pct_outstanding":0.20201061501811893,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.7251161963782288,"pct_of_holder_assets":0.22312793319448082,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":78746000000,"holder_total_assets_yen":255907000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社明電舎","holder_name_en":"MEIDENSHA CORPORATION","holder_sec_code":"6508","doc_id":"S100YQ5Z","period_end":"2026-03-31","holder_table":"reporting","shares":94000,"book_value_yen":447000000,"prior_shares":94000,"prior_book_value_yen":197000000,"purpose_ja":"主として社会システム事業などで取引があり、取引関係維持・強化を目的として保有している。","reciprocal":"有","pct_outstanding":0.15824164843085983,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2503766852815477,"pct_of_holder_assets":0.11962490767205113,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":178531000000,"holder_total_assets_yen":373668000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"能美防災株式会社","holder_name_en":"ＮＯＨＭＩ  ＢＯＳＡＩ  ＬＴＤ．","holder_sec_code":"6744","doc_id":"S100YHTN","period_end":"2026-03-31","holder_table":"reporting","shares":12100,"book_value_yen":57000000,"prior_shares":12100,"prior_book_value_yen":25000000,"purpose_ja":"当社防災事業における製品・サービスの販売・提供に関して取引関係にあり、中長期的な取引関係の維持・強化のために保有しております。","reciprocal":"無","pct_outstanding":0.02036940368099366,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.041011324881642754,"pct_of_holder_assets":0.03135123837391577,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":138986000000,"holder_total_assets_yen":181811000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日立金属株式会社","holder_name_en":"Proterial, Ltd.","holder_sec_code":"5486","doc_id":"S100PSNJ","period_end":"2022-03-31","holder_table":"reporting","shares":11100,"book_value_yen":18000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"電線材料事業(鉄道車両用電線等)の顧客であります。当社は同社との事業上の関係強化・維持のため同社株式を保有しております。当事業年度において連結子会社からの承継により増加しております。","reciprocal":"無","pct_outstanding":0.018195671630025147,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.003411914785532723,"pct_of_holder_assets":0.0016827226452399984,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":527563000000,"holder_total_assets_yen":1069695000000,"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．保有している特定投資株式が60銘柄に満たないため、貸借対照表計上額が当社の資本金額の100分の1以下の銘柄についても記載している。"},{"holder_table":"reporting","note_no":"2","text_ja":"２．受取配当金以外の定量的な保有効果については、測定が困難であるため記載していない。当事業年度の取締役会において、銘柄毎に、前事業年度末日時点での保有目的、保有に伴う経済合理性等を総合的に検証した結果、現状保有している特定投資株式は、いずれも保有目的に合致していることを確認している。"},{"holder_table":"reporting","note_no":"3","text_ja":"３．株式会社大和証券グループ本社は当社株式を保有していないが、同社子会社である大和証券株式会社は当社株式を保有している。"},{"holder_table":"reporting","note_no":"4","text_ja":"４．第一生命ホールディングス株式会社は当社株式を保有していないが、同社子会社である第一生命保険株式会社は当社株式を保有している。"},{"holder_table":"reporting","note_no":"5","text_ja":"５．第一生命ホールディングス株式会社は、2026年４月１日に株式会社第一ライフグループに会社名を変更している。"}],"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":null,"acquisition_cost_yen":null,"issues_decreased":3,"sale_proceeds_yen":1171000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":null,"acquisition_cost_yen":null,"issues_decreased":null,"sale_proceeds_yen":null,"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":28376000000,"listed_yen":27019000000,"unlisted_yen":1357000000,"listed_issues":25,"unlisted_issues":33,"equity_yen":230726000000,"equity_basis":"jgaap_consolidated","total_assets_yen":333793000000,"assets_basis":"jgaap_consolidated","pct_of_equity":12.298570598892193,"pct_of_assets":8.501077014796595,"equity_basis_label":"Consolidated net assets (Japanese GAAP)","assets_basis_label":"Consolidated net assets (Japanese GAAP)","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":27019000000,"issue_count":25,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":1357000000,"issue_count":33,"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":17709000000,"equity_yen":185192000000,"equity_basis":"jgaap_consolidated","pct_of_equity":9.562508099701931,"pct_of_assets":6.871944121071013},{"year":"2023","period_end":"2023-03-31","policy_total_yen":17645000000,"equity_yen":190234000000,"equity_basis":"jgaap_consolidated","pct_of_equity":9.275418694870528,"pct_of_assets":6.750940234379484},{"year":"2024","period_end":"2024-03-31","policy_total_yen":23021000000,"equity_yen":199115000000,"equity_basis":"jgaap_consolidated","pct_of_equity":11.561660347035632,"pct_of_assets":8.146229436264361},{"year":"2025","period_end":"2025-03-31","policy_total_yen":20242000000,"equity_yen":209649000000,"equity_basis":"jgaap_consolidated","pct_of_equity":9.655185572075231,"pct_of_assets":6.82956125079288},{"year":"2026","period_end":"2026-03-31","policy_total_yen":28376000000,"equity_yen":230726000000,"equity_basis":"jgaap_consolidated","pct_of_equity":12.298570598892193,"pct_of_assets":8.501077014796595}],"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":"2019","period_end":"2019-03-31","named_holdings":56,"book_value_yen":19071000000},{"year":"2022","period_end":"2022-03-31","named_holdings":43,"book_value_yen":16304000000},{"year":"2023","period_end":"2023-03-31","named_holdings":37,"book_value_yen":16265000000},{"year":"2024","period_end":"2024-03-31","named_holdings":35,"book_value_yen":21644000000},{"year":"2025","period_end":"2025-03-31","named_holdings":30,"book_value_yen":18871000000},{"year":"2026","period_end":"2026-03-31","named_holdings":27,"book_value_yen":27007000000}],"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."}}