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CORPORATION","held_sec_code":"9005","match_status":"matched","shares":45000,"book_value_yen":83000000,"prior_shares":45000,"prior_book_value_yen":75000000,"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。","reciprocal":"無","pct_outstanding":0.007853134846478612,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.10540217915830645,"pct_of_holder_assets":0.03243365753965308,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":78746000000,"holder_total_assets_yen":255907000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"京王電鉄㈱","held_name_en":"Keio Corporation","held_sec_code":"9008","match_status":"matched","shares":14700,"book_value_yen":56000000,"prior_shares":13618,"prior_book_value_yen":51000000,"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、当社は同社の持株会に加入していたため、株式数が増加しています。","reciprocal":"無","pct_outstanding":0.012690198668944917,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07111472328753206,"pct_of_holder_assets":0.0218829496653081,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":78746000000,"holder_total_assets_yen":255907000000,"implausible":false,"reciprocal_held_both_ways":false,"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":21640,"book_value_yen":35000000,"prior_shares":21640,"prior_book_value_yen":31000000,"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。","reciprocal":"無","pct_outstanding":0.006306963461525251,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04444670205470754,"pct_of_holder_assets":0.013676843540817562,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":78746000000,"holder_total_assets_yen":255907000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"東鉄工業㈱","held_name_en":"TOTETSU KOGYO CO.,LTD.","held_sec_code":"1835","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":385000,"prior_book_value_yen":1176000000,"purpose_ja":"前事業年度は取引関係の維持・強化の目的で保有しておりましたが、政策保有株の縮減方針に従い、当事業年度において、全株式を売却いたしました。","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":78746000000,"holder_total_assets_yen":255907000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"日本リーテック㈱","held_name_en":"NIPPON RIETEC CO.,LTD.","held_sec_code":"1938","match_status":"matched","shares":null,"book_value_yen":null,"prior_shares":32917,"prior_book_value_yen":48000000,"purpose_ja":"前事業年度は取引関係の維持・強化の目的で保有しておりましたが、政策保有株の縮減方針に従い、当事業年度において、全株式を売却いたしました。","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":78746000000,"holder_total_assets_yen":255907000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"holder_name":"鹿島建設株式会社","holder_name_en":"ＫＡＪＩＭＡ  ＣＯＲＰＯＲＡＴＩＯＮ","holder_sec_code":"1812","doc_id":"S100YGGI","period_end":"2026-03-31","holder_table":"reporting","shares":470000,"book_value_yen":2157000000,"prior_shares":470000,"prior_book_value_yen":1172000000,"purpose_ja":"（保有目的）同社株式は、技術開発や工事遂行等において連携を強化するため、保有している。（営業上の取引、業務上の提携その他）主に土木事業、建築事業において建設工事の共同企業体の構成員として共同で工事の施工を行っている。また、当社及び東日本旅客鉄道㈱との３社間で相互に連携強化を行っている。さらに、建設施工ロボット・IoT分野での技術連携を目的とした「建設RXコンソーシアム」及び国立研究開発法人新エネルギー・産業技術総合開発機構「グリーンイノベーション基金事業/CO2を用いたコンクリート等製造技術開発プロジェクト」を実施するコンソーシアムであるCUCOに共同で参画している。（定量的な保有効果）取引先との営業秘密に係わるため、定量的な保有効果は記載していないが、保有目的に対する効果を確認している。","reciprocal":"有","pct_outstanding":3.3790205671635696,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.15018590466641601,"pct_of_holder_assets":0.05951426755926112,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":1436220000000,"holder_total_assets_yen":3624341000000,"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":127500,"book_value_yen":585000000,"prior_shares":150000,"prior_book_value_yen":374000000,"purpose_ja":"当該会社は、鉄道事業特有の施工上の制約のある工事において高い技術力を有しており、鉄道線路と交差する設備の新設工事等において協力関係にあります。同社との連携を維持・強化することにより、鉄道施設の維持・機能強化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":0.9166491964113939,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.011388787709298177,"pct_of_holder_assets":0.005378739580186157,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5136631000000,"holder_total_assets_yen":10876154000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"京阪ホールディングス株式会社","holder_name_en":"Keihan Holdings Co.,Ltd.","holder_sec_code":"9045","doc_id":"S100YCVR","period_end":"2026-03-31","holder_table":"reporting","shares":34533,"book_value_yen":158000000,"prior_shares":34533,"prior_book_value_yen":86000000,"purpose_ja":"鉄道事業及び不動産事業における長期的な関係維持・強化のため","reciprocal":"有","pct_outstanding":0.24827173882097778,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04519929168704926,"pct_of_holder_assets":0.017371323024149437,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":349563000000,"holder_total_assets_yen":909545000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ライト工業株式会社","holder_name_en":"RAITO KOGYO CO., LTD.","holder_sec_code":"1926","doc_id":"S100YIK2","period_end":"2026-03-31","holder_table":"reporting","shares":27973,"book_value_yen":128000000,"prior_shares":27361,"prior_book_value_yen":68000000,"purpose_ja":"当社の元請事業者であり、建設工事の受注や施工を通じた取引関係の円滑化のため保有しており、保有目的、経済合理性の観点を踏まえて、保有の意義を検証しております。取引先持株会を通じた取得により株式数が増加しております。","reciprocal":"無","pct_outstanding":0.2011092389899288,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.14083577228616068,"pct_of_holder_assets":0.10164377034860637,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":90886000000,"holder_total_assets_yen":125930000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本電設工業株式会社","holder_name_en":"NIPPON DENSETSU KOGYO CO., LTD.","holder_sec_code":"1950","doc_id":"S100YGLL","period_end":"2026-03-31","holder_table":"reporting","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},{"holder_name":"サンメッセ株式会社","holder_name_en":"Sun Messe Co.,Ltd.","holder_sec_code":"7883","doc_id":"S100YFTU","period_end":"2026-03-31","holder_table":"reporting","shares":2000,"book_value_yen":9180000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"印刷物等の取引が期待される重要な企業であり、同社との良好な関係構築のため保有しています。当社条件により縮減検討対象となりましたので、取締役会での検証を実施します。","reciprocal":"無","pct_outstanding":0.014378810924100297,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.064701972705353,"pct_of_holder_assets":0.040648269944540794,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":14188130000,"holder_total_assets_yen":22583987000,"implausible":false,"reciprocal_held_both_ways":false},{"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":null,"book_value_yen":null,"prior_shares":33315,"prior_book_value_yen":83000000,"purpose_ja":"当社と同じ鉄道工事会社として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保有しておりましたが、当事業年度において保有する株式の全てを売却しております。","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":133975028000,"holder_total_assets_yen":203845466000,"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）「－」は、当該銘柄を保有していないことを示しています。"}],"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":3,"acquisition_cost_yen":24000000,"issues_decreased":5,"sale_proceeds_yen":3659000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":null,"acquisition_cost_yen":null,"issues_decreased":1,"sale_proceeds_yen":41000000,"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":24931000000,"listed_yen":24064000000,"unlisted_yen":867000000,"listed_issues":20,"unlisted_issues":33,"equity_yen":78746000000,"equity_basis":"jgaap_consolidated","total_assets_yen":255907000000,"assets_basis":"jgaap_consolidated","pct_of_equity":31.660020826454677,"pct_of_assets":9.742211037603504,"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":24064000000,"issue_count":20,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":867000000,"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":28344000000,"equity_yen":63931000000,"equity_basis":"jgaap_consolidated","pct_of_equity":44.335298994228154,"pct_of_assets":16.376336817291527},{"year":"2023","period_end":"2023-03-31","policy_total_yen":18876000000,"equity_yen":65543000000,"equity_basis":"jgaap_consolidated","pct_of_equity":28.799414125078194,"pct_of_assets":10.292481842570176},{"year":"2024","period_end":"2024-03-31","policy_total_yen":23853000000,"equity_yen":72131000000,"equity_basis":"jgaap_consolidated","pct_of_equity":33.06899945931708,"pct_of_assets":11.29023860349977},{"year":"2025","period_end":"2025-03-31","policy_total_yen":21319000000,"equity_yen":70116000000,"equity_basis":"jgaap_consolidated","pct_of_equity":30.40532831308118,"pct_of_assets":9.470817673765671},{"year":"2026","period_end":"2026-03-31","policy_total_yen":24931000000,"equity_yen":78746000000,"equity_basis":"jgaap_consolidated","pct_of_equity":31.660020826454677,"pct_of_assets":9.742211037603504}],"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":27,"book_value_yen":27392000000},{"year":"2023","period_end":"2023-03-31","named_holdings":26,"book_value_yen":17821000000},{"year":"2024","period_end":"2024-03-31","named_holdings":25,"book_value_yen":22600000000},{"year":"2025","period_end":"2025-03-31","named_holdings":22,"book_value_yen":20441000000},{"year":"2026","period_end":"2026-03-31","named_holdings":22,"book_value_yen":24053000000}],"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."}}