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CORPORATION","holder_sec_code":"2734","doc_id":"S100XL6L","period_end":"2025-11-30","holder_table":"largest","shares":28550,"book_value_yen":139000000,"prior_shares":28550,"prior_book_value_yen":91000000,"purpose_ja":"（保有目的）取引関係等の強化（定量的な保有効果）（注１）","reciprocal":"無","pct_outstanding":0.0023938076591074214,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.14855664924599485,"pct_of_holder_assets":0.06366072041951956,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":93567000000,"holder_total_assets_yen":218345000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"大和自動車交通株式会社","holder_name_en":"Daiwa Motor Transportation Co., Ltd.","holder_sec_code":"9082","doc_id":"S100YHKH","period_end":"2026-03-31","holder_table":"largest","shares":17257,"book_value_yen":99000000,"prior_shares":16318,"prior_book_value_yen":55000000,"purpose_ja":"取引関係維持・強化のため。なお、取引先持株会に加入しているため、株式数が増加しております。","reciprocal":"無","pct_outstanding":0.0014469330568552285,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.0339425587467364,"pct_of_holder_assets":0.33490071377828895,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":9575000000,"holder_total_assets_yen":29561000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社岡山製紙","holder_name_en":"Okayama Paper Industries Co.,Ltd.","holder_sec_code":"3892","doc_id":"S100YYF7","period_end":"2026-05-31","holder_table":"reporting","shares":10000,"book_value_yen":70990000,"prior_shares":15000,"prior_book_value_yen":55530000,"purpose_ja":"（保有目的）板紙製品の販売先であり、取引機会と売上拡大を図るために保有しております。（定量的な保有効果）（注１）","reciprocal":"無","pct_outstanding":0.0008384615268327221,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.49021544067460937,"pct_of_holder_assets":0.3833400283290387,"holder_equity_basis":"parent_only","holder_equity_yen":14481388000,"holder_total_assets_yen":18518807000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ＮＧＫ株式会社","holder_name_en":"NGK Corporation","holder_sec_code":"5333","doc_id":"S100YF7M","period_end":"2026-03-31","holder_table":"reporting","shares":10300,"book_value_yen":59000000,"prior_shares":10300,"prior_book_value_yen":34000000,"purpose_ja":"主にエンバイロメント事業における取引先であり、同社との取引関係強化のため相互保有している。","reciprocal":"有","pct_outstanding":0.0008636153726377038,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.007218432205463496,"pct_of_holder_assets":0.00474532103303226,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":817352000000,"holder_total_assets_yen":1243330000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"クリエイト株式会社","holder_name_en":"CREATE CORPORATION","holder_sec_code":"3024","doc_id":"S100YD0K","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":58528000,"prior_shares":null,"prior_book_value_yen":32393000,"purpose_ja":"主に鋼管類・SUS類の商品仕入を行っている主要仕入先のグループ会社の株式を保有して、良好な取引関係の維持・強化を図るために保有しております。定量的な保有効果については取引上の情報管理等の観点から記載しませんが、上記の方針及び検証により当期末においては保有の合理性があると判断しています。株式数が変動した理由は、取引先持株会による増加となります。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.0507836891541702,"pct_of_holder_assets":0.3196227961697472,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5569938000,"holder_total_assets_yen":18311585000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社田中化学研究所","holder_name_en":"TANAKA　CHEMICAL　CORPORATION","holder_sec_code":"4080","doc_id":"S100W16T","period_end":"2025-03-31","holder_table":"reporting","shares":16700,"book_value_yen":56000000,"prior_shares":16700,"prior_book_value_yen":60000000,"purpose_ja":"広範な原料調達先の確保・運営として同社との関係の維持・強化を図るために保有しています。定量的な保有効果は銘柄ごとの諸条件及び個別の取引条件を開示できないため記載は困難ですが、保有の合理性は関連取引や資本コスト等も踏まえて総合的に検証しています。","reciprocal":"有","pct_outstanding":0.0013801576847014183,"pct_unavailable":null,"pct_basis_period_end":"2025-03-31","pct_share_classes":1,"pct_of_holder_equity":0.33252182174455197,"pct_of_holder_assets":0.1694812662671751,"holder_equity_basis":"parent_only","holder_equity_yen":16841000000,"holder_total_assets_yen":33042000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"住友重機械工業株式会社","holder_name_en":"SUMITOMO HEAVY INDUSTRIES,LTD.","holder_sec_code":"6302","doc_id":"S100XT1R","period_end":"2025-12-31","holder_table":"reporting","shares":1165,"book_value_yen":6000000,"prior_shares":1165,"prior_book_value_yen":4000000,"purpose_ja":"主にメカトロニクス、インダストリアル マシナリー、エネルギー&ライフライン関連の幅広い事業における取引先であり、良好な関係の維持・強化を図るために株式を継続保有しております。","reciprocal":"有","pct_outstanding":9.768076787601212e-05,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0008743513405991929,"pct_of_holder_assets":0.0004543640531393906,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":686223000000,"holder_total_assets_yen":1320527000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本電気硝子株式会社","holder_name_en":"Nippon Electric Glass Co., Ltd.","holder_sec_code":"5214","doc_id":"S100XU17","period_end":"2025-12-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":76000,"prior_book_value_yen":261000000,"purpose_ja":"当事業年度に売却済。","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":496181000000,"holder_total_assets_yen":701413000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東テク株式会社","holder_name_en":"TOTECH CORPORATION","holder_sec_code":"9960","doc_id":"S100YGTS","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":7000,"prior_book_value_yen":23000000,"purpose_ja":"主に商品販売セグメントにおける主要仕入先であり、相互の事業拡大や取引関係の強化を目的に株式を保有しておりましたが、当事業年度において全株式を売却しました。","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":73670000000,"holder_total_assets_yen":115120000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"戸田建設株式会社","holder_name_en":"TODA CORPORATION","holder_sec_code":"1860","doc_id":"S100YG3E","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":148200,"prior_book_value_yen":499000000,"purpose_ja":"当事業年度において、保有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":403161000000,"holder_total_assets_yen":998399000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"大和工業株式会社","holder_name_en":"ＹＡＭＡＴＯ ＫＯＧＹＯ ＣＯ.,ＬＴＤ.","holder_sec_code":"5444","doc_id":"S100YGVD","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":2867927,"prior_book_value_yen":9670000000,"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":581417000000,"holder_total_assets_yen":633540000000,"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":null,"book_value_yen":null,"prior_shares":71973,"prior_book_value_yen":246000000,"purpose_ja":"－","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":352846000000,"holder_total_assets_yen":664033000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"丸大食品株式会社","holder_name_en":"MARUDAI FOOD CO., LTD.","holder_sec_code":"2288","doc_id":"S100YD4W","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":413000,"prior_book_value_yen":1392000000,"purpose_ja":"同社連結子会社と原材料等の仕入取引を行っており、事業上の関係を勘案し、取引関係や協力関係の維持・強化を図るため保有しておりましたが、当事業年度に全株売却しております。","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":"jgaap_consolidated","holder_equity_yen":76971000000,"holder_total_assets_yen":124641000000,"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　「定量的な保有効果」に関しては、取引先との関係等を考慮し、全銘柄において記載を省略しておりますが、毎年、資本コストとの比較を行い、戦略性等の定性的な側面も確認の上、保有の合理性を検証しております。"},{"holder_table":"reporting","note_no":"2","text_ja":"２　「－」は、当該銘柄を特定投資株式として保有していないことを示しております。"},{"holder_table":"reporting","note_no":"3","text_ja":"３　「当社株式の保有の有無」に関しては、同社子会社による保有は含めておりません。当期の状況を当社の株主名簿で確認できる範囲で記載しております。当期に特定投資株式として保有していない銘柄は、前期の状況を記載しております。"}],"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":11,"sale_proceeds_yen":41965000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":7,"acquisition_cost_yen":2829000000,"issues_decreased":9,"sale_proceeds_yen":8232000000,"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":202694000000,"listed_yen":178984000000,"unlisted_yen":23710000000,"listed_issues":39,"unlisted_issues":202,"equity_yen":4628555000000,"equity_basis":"ifrs_consolidated_excl_nci","total_assets_yen":13638338000000,"assets_basis":"ifrs_consolidated","pct_of_equity":4.379206901505977,"pct_of_assets":1.4862074836391355,"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":178984000000,"issue_count":39,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":23710000000,"issue_count":202,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"unlisted"}],"scale_history":[{"year":"2020","period_end":"2020-03-31","policy_total_yen":236960000000,"equity_yen":2544133000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":9.31397847518192,"pct_of_assets":2.9151405728615374},{"year":"2022","period_end":"2022-03-31","policy_total_yen":244862000000,"equity_yen":3197816000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":7.6571635140983725,"pct_of_assets":2.5553930082196445},{"year":"2023","period_end":"2023-03-31","policy_total_yen":215959000000,"equity_yen":3779518000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":5.713929659813765,"pct_of_assets":2.136885167715984},{"year":"2024","period_end":"2024-03-31","policy_total_yen":298129000000,"equity_yen":4445494000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":6.706318802814716,"pct_of_assets":2.702259298661066},{"year":"2025","period_end":"2025-03-31","policy_total_yen":191687000000,"equity_yen":4648462000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":4.1236649885489,"pct_of_assets":1.648047000639059},{"year":"2026","period_end":"2026-03-31","policy_total_yen":202694000000,"equity_yen":4628555000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":4.379206901505977,"pct_of_assets":1.4862074836391355}],"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":60,"book_value_yen":281274000000},{"year":"2020","period_end":"2020-03-31","named_holdings":60,"book_value_yen":205533000000},{"year":"2022","period_end":"2022-03-31","named_holdings":78,"book_value_yen":218083000000},{"year":"2023","period_end":"2023-03-31","named_holdings":67,"book_value_yen":190727000000},{"year":"2024","period_end":"2024-03-31","named_holdings":60,"book_value_yen":272219000000},{"year":"2025","period_end":"2025-03-31","named_holdings":48,"book_value_yen":157969000000},{"year":"2026","period_end":"2026-03-31","named_holdings":43,"book_value_yen":178984000000}],"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."}}