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LTD.","holder_sec_code":"7276","doc_id":"S100YHHQ","period_end":"2026-03-31","holder_table":"reporting","shares":19188,"book_value_yen":22000000,"prior_shares":19188,"prior_book_value_yen":25000000,"purpose_ja":"鉄道車両関連事業等における良好な取引関係の維持・強化及び当社の事業基盤の強化を図るため、継続して保有しております。","reciprocal":"無","pct_outstanding":0.003946541475383514,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0032540238963682136,"pct_of_holder_assets":0.0024277174710687806,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":676086000000,"holder_total_assets_yen":906201000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"コクヨ株式会社","holder_name_en":"KOKUYO CO., LTD.","holder_sec_code":"7984","doc_id":"S100XUE1","period_end":"2025-12-31","holder_table":"reporting","shares":17077,"book_value_yen":22000000,"prior_shares":15995,"prior_book_value_yen":22000000,"purpose_ja":"製品販売における協力関係の維持強化を目的として保有しております。なお、取引先持株会において継続的に取得しているため、株式数が増加しております。","reciprocal":"無","pct_outstanding":0.003512356096264555,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.008612016895211327,"pct_of_holder_assets":0.006196345282891327,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":255457000000,"holder_total_assets_yen":355048000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社丹青社","holder_name_en":"TANSEISHA CO.,LTD.","holder_sec_code":"9743","doc_id":"S100Y04L","period_end":"2026-01-31","holder_table":"reporting","shares":15000,"book_value_yen":18000000,"prior_shares":15000,"prior_book_value_yen":22000000,"purpose_ja":"ディスプレイ関連事業の取引の安定的、長期的な維持・強化のため保有しております。定量的な保有効果は秘密保持の観点から記載いたしませんが、保有の便益と当社資本コストの比較により経済合理性を取締役会において検証しております。 ","reciprocal":"無","pct_outstanding":0.0030851637549902393,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04778972520908005,"pct_of_holder_assets":0.03230148048452221,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":37665000000,"holder_total_assets_yen":55725000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"住友ゴム工業株式会社","holder_name_en":"Sumitomo Rubber Industries, Ltd.","holder_sec_code":"5110","doc_id":"S100XT7A","period_end":"2025-12-31","holder_table":"reporting","shares":13500,"book_value_yen":17000000,"prior_shares":4500,"prior_book_value_yen":19000000,"purpose_ja":"(保有目的)主に補修用タイヤの販売取引があり、取引関係維持・強化のために保有しております。(増加理由)2025年１月１日付け普通株式１株につき３株の割合で株式分割を実施","reciprocal":"無","pct_outstanding":null,"pct_unavailable":"holding restated onto a share base the issuer has not filed yet","pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0023740364205116745,"pct_of_holder_assets":0.001164437795732952,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":716080000000,"holder_total_assets_yen":1459932000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本国土開発株式会社","holder_name_en":"ＪＤＣ　ＣＯＲＰＯＲＡＴＩＯＮ","holder_sec_code":"1887","doc_id":"S100YXXI","period_end":"2026-05-31","holder_table":"reporting","shares":13119,"book_value_yen":14000000,"prior_shares":13119,"prior_book_value_yen":18000000,"purpose_ja":"（保有目的）工事請負に係る取引を行っており、主に鉄道関連工事等における中長期的な受注の確保に向けて、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）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":"無","pct_outstanding":0.0026982842201144636,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.019609216331675887,"pct_of_holder_assets":0.008862161734451654,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":71395000000,"holder_total_assets_yen":157975000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"森尾電機株式会社","holder_name_en":"MORIO DENKI CO., LTD.","holder_sec_code":"6647","doc_id":"S100YJH1","period_end":"2026-03-31","holder_table":"reporting","shares":4428,"book_value_yen":5202000,"prior_shares":4428,"prior_book_value_yen":5966000,"purpose_ja":"保有の経済合理性を有しており、主に鉄道関連事業での取引関係の維持・強化により当社の事業への相乗効果と、中長期的な企業価値の向上に資するため。","reciprocal":"無","pct_outstanding":0.0009107403404731187,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08584321319629003,"pct_of_holder_assets":0.054480149201460513,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":6059885000,"holder_total_assets_yen":9548432000,"implausible":false,"reciprocal_held_both_ways":false},{"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":3443,"book_value_yen":4000000,"prior_shares":3303,"prior_book_value_yen":4000000,"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。取引先持株会の会員として定期的に株式を取得しているため株式数が増加しております。","reciprocal":"無","pct_outstanding":0.0007081479205620929,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.002877987710992474,"pct_of_holder_assets":0.0022000869034326854,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":138986000000,"holder_total_assets_yen":181811000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社カナデン","holder_name_en":"KANADEN CORPORATION","holder_sec_code":"8081","doc_id":"S100YFEF","period_end":"2026-03-31","holder_table":"reporting","shares":3444,"book_value_yen":4000000,"prior_shares":3444,"prior_book_value_yen":4000000,"purpose_ja":"・同社株式は、当社のインフラセグメントの事業活動の円滑化のため保有しております。・当社は保有株式について事業運営上の必要性及び保有の妥当性を取引状況等により検証し、保有リスク・資本コスト等を総合的に勘案して保有意義の有無を定期的に取締役会で精査した上で保有しております。定量的な保有効果については取引先との営業秘密との判断により記載しませんが、上記の方針に基づいた十分な定量的効果があると判断しております。","reciprocal":"無","pct_outstanding":0.0007083535981457589,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.007855768097725755,"pct_of_holder_assets":0.0040832159408750335,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":50918000000,"holder_total_assets_yen":97962000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"三菱電機株式会社","holder_name_en":"Mitsubishi Electric Corporation","holder_sec_code":"6503","doc_id":"S100YD3V","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":1394000,"prior_book_value_yen":1878000000,"purpose_ja":"主として交通事業で鉄道用電機品・システム等の取引があり、取引関係の維持・強化を目的として保有していましたが、全株売却しました。","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":"ifrs_consolidated","holder_equity_yen":4629993000000,"holder_total_assets_yen":7357512000000,"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　貸借対照表計上額が資本金額の100分の１以下でありますが、上位26銘柄について記載しております。"},{"holder_table":"reporting","note_no":"2","text_ja":"※２　定量的な保有効果の記載は困難ですが、毎年６月の取締役会で個別の保有株式について現在の取引・協力関係の状況等を報告し、受取配当金に基づく利回りや、保有先の株主資本利益率（ＲＯＥ）と当社の資本コスト（ＷＡＣＣ）との比較等により、当該株式の保有に伴う便益やリスク、中長期的な経済合理性を精査の上保有意義を検証しております。"},{"holder_table":"reporting","note_no":"3","text_ja":"※３　直接の保有はありませんが、傘下の子会社が当社株式を保有しております。"},{"holder_table":"reporting","note_no":"4","text_ja":"※４　株式数の増加は株式分割に伴う増加であります。"},{"holder_table":"reporting","note_no":"5","text_ja":"※５　株式を保有していた新京成電鉄㈱を吸収合併したことに伴う増加であります。"}],"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":4,"acquisition_cost_yen":5336000000,"issues_decreased":null,"sale_proceeds_yen":null,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":4,"acquisition_cost_yen":22000000,"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":46827000000,"listed_yen":44792000000,"unlisted_yen":2035000000,"listed_issues":26,"unlisted_issues":27,"equity_yen":575605000000,"equity_basis":"jgaap_consolidated","total_assets_yen":1181801000000,"assets_basis":"jgaap_consolidated","pct_of_equity":8.135266371904343,"pct_of_assets":3.9623422217446085,"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":44792000000,"issue_count":26,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":2035000000,"issue_count":27,"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":10419000000,"equity_yen":387705000000,"equity_basis":"jgaap_consolidated","pct_of_equity":2.687352497388478,"pct_of_assets":1.1572217791826698},{"year":"2023","period_end":"2023-03-31","policy_total_yen":10841000000,"equity_yen":410945000000,"equity_basis":"jgaap_consolidated","pct_of_equity":2.638065921230335,"pct_of_assets":1.1227530181560585},{"year":"2024","period_end":"2024-03-31","policy_total_yen":15992000000,"equity_yen":469157000000,"equity_basis":"jgaap_consolidated","pct_of_equity":3.4086670347026686,"pct_of_assets":1.5027222275470258},{"year":"2025","period_end":"2025-03-31","policy_total_yen":30266000000,"equity_yen":524658000000,"equity_basis":"jgaap_consolidated","pct_of_equity":5.768710283651445,"pct_of_assets":2.7662413629218},{"year":"2026","period_end":"2026-03-31","policy_total_yen":46827000000,"equity_yen":575605000000,"equity_basis":"jgaap_consolidated","pct_of_equity":8.135266371904343,"pct_of_assets":3.9623422217446085}],"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":18,"book_value_yen":8374000000},{"year":"2023","period_end":"2023-03-31","named_holdings":18,"book_value_yen":8817000000},{"year":"2024","period_end":"2024-03-31","named_holdings":21,"book_value_yen":13968000000},{"year":"2025","period_end":"2025-03-31","named_holdings":24,"book_value_yen":28243000000},{"year":"2026","period_end":"2026-03-31","named_holdings":26,"book_value_yen":44780000000}],"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."}}