{"entity":{"edinet_code":"E04505","sec_code":"9507","name_ja":"四国電力株式会社","name_en":"Shikoku Electric Power Company, Incorporated","industry":"電気・ガス業","industry_en":"Electric Power & Gas"},"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":"S100YH23","filer_name":"四国電力株式会社","filer_name_en":"Shikoku Electric Power Company, Incorporated","period_end":"2026-03-31","filed_date":"2026-06-24","sha256":"b307821de814c366d89546d1fb309cb9a9de60e3228c7c748e2a29a694aa1be1","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":"㈱パワーエックス(注)２","held_name_en":"ＰｏｗｅｒＸ, Ｉｎｃ．","held_sec_code":"485A","match_status":"matched","shares":268000,"book_value_yen":1239000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"新規事業に向けた協力関係構築","reciprocal":"無","pct_outstanding":0.7372034681572114,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.2594595952932899,"pct_of_holder_assets":0.07143853806422895,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":477531000000,"holder_total_assets_yen":1734358000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱日本製鋼所","held_name_en":"THE JAPAN STEEL WORKS, LTD.","held_sec_code":"5631","match_status":"matched","shares":130000,"book_value_yen":1088000000,"prior_shares":130000,"prior_book_value_yen":680000000,"purpose_ja":"安定的な原子力発電所主要部材の調達","reciprocal":"無","pct_outstanding":0.17660449839642436,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.22783861152469684,"pct_of_holder_assets":0.06273214641959733,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":477531000000,"holder_total_assets_yen":1734358000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"holder_name":"株式会社いよぎんホールディングス","holder_name_en":"Iyogin Holdings, Inc.","holder_sec_code":"5830","doc_id":"S100YBIB","period_end":"2026-03-31","holder_table":"largest","shares":4431108,"book_value_yen":7745000000,"prior_shares":6641108,"prior_book_value_yen":7687000000,"purpose_ja":"当社グループの主な営業基盤である瀬戸内圏域に本社等を有し、地域経済の成長・活性化に重要な企業であることから、総合的な関係の維持強化を図ることにより当社グループの中長期的な企業価値の向上に資するため保有しております。","reciprocal":"無","pct_outstanding":2.166067989061227,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8822370204651651,"pct_of_holder_assets":0.08118608626668954,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":877882000000,"holder_total_assets_yen":9539812000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社伊予銀行","holder_name_en":"The Iyo Bank, Ltd.","holder_sec_code":"8385","doc_id":"S100OLYJ","period_end":"2022-03-31","holder_table":"reporting","shares":8851108,"book_value_yen":6974000000,"prior_shares":8851108,"prior_book_value_yen":7611000000,"purpose_ja":"緊密な関係の維持強化","reciprocal":"有","pct_outstanding":4.3239666834982255,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.9529952254583915,"pct_of_holder_assets":0.08161691845926826,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":731798000000,"holder_total_assets_yen":8544797000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社ちゅうぎんフィナンシャルグループ","holder_name_en":"Chugin Financial Group, Inc.","holder_sec_code":"5832","doc_id":"S100YB0D","period_end":"2026-03-31","holder_table":"largest","shares":781731,"book_value_yen":1366000000,"prior_shares":781731,"prior_book_value_yen":904000000,"purpose_ja":"雇用創出などの企業活動により地域社会の発展に貢献する地元上場企業との関係強化を通じ、「持続的な成長・企業価値向上」の維持・強化を図るため。","reciprocal":"無","pct_outstanding":0.3821352346087756,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2200741098759465,"pct_of_holder_assets":0.012013805850565142,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":620700000000,"holder_total_assets_yen":11370252000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"西松建設株式会社","holder_name_en":"Nishimatsu Construction Co., Ltd.","holder_sec_code":"1820","doc_id":"S100YEDU","period_end":"2026-03-31","holder_table":"reporting","shares":625055,"book_value_yen":1092000000,"prior_shares":625055,"prior_book_value_yen":723000000,"purpose_ja":"工事請負に係る取引を行っており、主に発電施設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、継続して保有しております。なお、同社との守秘義務上、定量的な保有効果の記載は困難でありますが、上記aの方法により保有の合理性を検証しております。","reciprocal":"無","pct_outstanding":0.3055469708485249,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.5341943058409158,"pct_of_holder_assets":0.15918088896404145,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":204420000000,"holder_total_assets_yen":686012000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社中国銀行","holder_name_en":"The Chugoku Bank，Limited","holder_sec_code":"8382","doc_id":"S100O9NP","period_end":"2022-03-31","holder_table":"reporting","shares":781731,"book_value_yen":616000000,"prior_shares":781731,"prior_book_value_yen":672000000,"purpose_ja":"雇用創出などの企業活動により地域社会の発展に貢献する地元上場企業との関係強化を通じ、「持続的な成長・企業価値向上」の維持・強化を図るため。","reciprocal":"無","pct_outstanding":0.3818932951058502,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.11151056997107242,"pct_of_holder_assets":0.006034359210317892,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":552414000000,"holder_total_assets_yen":10208209000000,"implausible":false,"reciprocal_held_both_ways":false},{"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":156468,"book_value_yen":274000000,"prior_shares":156468,"prior_book_value_yen":181000000,"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":0.0764865866759357,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.009664906407374394,"pct_of_holder_assets":0.005679307340069462,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":2834999000000,"holder_total_assets_yen":4824532000000,"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":125267,"book_value_yen":218000000,"prior_shares":125267,"prior_book_value_yen":144000000,"purpose_ja":"主にエネルギー＆インダストリー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保有している。","reciprocal":"無","pct_outstanding":0.06123453519655417,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.026671495267644785,"pct_of_holder_assets":0.017533559071203943,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":817352000000,"holder_total_assets_yen":1243330000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"三菱重工業株式会社","holder_name_en":"Mitsubishi Heavy Industries, Ltd.","holder_sec_code":"7011","doc_id":"S100YHZG","period_end":"2026-03-31","holder_table":"reporting","shares":104000,"book_value_yen":182000000,"prior_shares":104000,"prior_book_value_yen":120000000,"purpose_ja":"発電プラントの建設、保守等の取引を行う重要取引先であり、同社との良好な関係の維持・強化を図るため。","reciprocal":"無","pct_outstanding":0.050838542157484685,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.00589270230909749,"pct_of_holder_assets":0.0022008024222370044,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":3088566000000,"holder_total_assets_yen":8269711000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社安藤・間","holder_name_en":"HAZAMA ANDO CORPORATION","holder_sec_code":"1719","doc_id":"S100YHJP","period_end":"2026-03-31","holder_table":"reporting","shares":28000,"book_value_yen":48000000,"prior_shares":28000,"prior_book_value_yen":32000000,"purpose_ja":"土木・建築事業における工事契約等の安定的な取引関係を維持・強化するため保有しています。","reciprocal":"無","pct_outstanding":0.013687299811630492,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.022924825675804755,"pct_of_holder_assets":0.01166251594484602,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":209380000000,"holder_total_assets_yen":411575000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"太平電業株式会社","holder_name_en":"TAIHEI DENGYO KAISHA,LTD.","holder_sec_code":"1968","doc_id":"S100YPZ0","period_end":"2026-03-31","holder_table":"reporting","shares":11200,"book_value_yen":19000000,"prior_shares":11200,"prior_book_value_yen":12000000,"purpose_ja":"当社の主力である事業用発電設備のエンドユーザーであり、当社が発電所のメンテナンス工事を行っております。取引関係の維持・強化を行い、建設事業の収益の安定および向上を目的に保有しております。","reciprocal":"無","pct_outstanding":0.005474919924652197,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.014850827347407749,"pct_of_holder_assets":0.010834545091665954,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":127939000000,"holder_total_assets_yen":175365000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"四国化成ホールディングス株式会社","holder_name_en":"SHIKOKU KASEI HOLDINGS CORPORATION","holder_sec_code":"4099","doc_id":"S100YZOS","period_end":"2025-12-31","holder_table":"reporting","shares":10000,"book_value_yen":15000000,"prior_shares":10000,"prior_book_value_yen":12000000,"purpose_ja":"同社株式は、脱炭素社会の実現に向けた様々な業務連携を行っており、中長期的に当社グループの企業価値向上に資すると判断して保有しています。","reciprocal":"無","pct_outstanding":0.004888321361296604,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.015856404401737863,"pct_of_holder_assets":0.01038759582557149,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":94599000000,"holder_total_assets_yen":144403000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"タツタ電線株式会社","holder_name_en":"TATSUTA ELECTRIC WIRE AND CABLE CO.,LTD.","holder_sec_code":"5809","doc_id":"S100TP8T","period_end":"2024-03-31","holder_table":"reporting","shares":12260,"book_value_yen":14000000,"prior_shares":12260,"prior_book_value_yen":9000000,"purpose_ja":"  電線ケーブル事業の販売先であり、取引の維持・拡大のため保有しております。定量的な保有効果を個別に記載することは困難でありますが、上記の通り、期末評価額や取引実績等の観点から評価をした結果、保有効果があると判断しております。","reciprocal":"無","pct_outstanding":0.005989732387062447,"pct_unavailable":null,"pct_basis_period_end":"2024-03-31","pct_share_classes":1,"pct_of_holder_equity":0.02735122885163912,"pct_of_holder_assets":0.022906133935437424,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":51186000000,"holder_total_assets_yen":61119000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ニッポン高度紙工業株式会社","holder_name_en":"NIPPON KODOSHI CORPORATION","holder_sec_code":"3891","doc_id":"S100YD7L","period_end":"2026-03-31","holder_table":"reporting","shares":1500,"book_value_yen":2622000,"prior_shares":1500,"prior_book_value_yen":1736000,"purpose_ja":"電力受給の取引をおこなっており、事業上の関係を勘案し、同社との良好な関係を維持するため。","reciprocal":"無","pct_outstanding":0.0007332482041944907,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.01000507083853445,"pct_of_holder_assets":0.007363230727284159,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":26206711000,"holder_total_assets_yen":35609369000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社ダイヘン","holder_name_en":"DAIHEN Corporation","holder_sec_code":"6622","doc_id":"S100YEET","period_end":"2026-03-31","holder_table":"reporting","shares":699,"book_value_yen":1000000,"prior_shares":699,"prior_book_value_yen":0,"purpose_ja":"主にエネルギーマネジメントにおける販売先で、変圧器等の販売を行っております。同社との良好な取引関係の維持・強化が当社事業の発展に資すると判断し、保有しております。","reciprocal":"無","pct_outstanding":0.0003416936631546326,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0005856652571656144,"pct_of_holder_assets":0.00031232919497149996,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":170746000000,"holder_total_assets_yen":320175000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社タダノ","holder_name_en":"ＴＡＤＡＮＯ　ＬＴＤ．","holder_sec_code":"6395","doc_id":"S100XQP3","period_end":"2025-12-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":32010,"prior_book_value_yen":39000000,"purpose_ja":"（株式が減少した理由）当事業年度において保有する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":205946000000,"holder_total_assets_yen":458529000000,"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  個別の保有の合理性については、事業運営上の重要性や資本コストを踏まえた収益性等を勘案し、検証しているが、定量的な保有効果については、当該企業との個別の取引内容に関わるため、記載が困難である。"},{"holder_table":"reporting","note_no":"2","text_ja":"２  ㈱パワーエックスは、非上場株式として保有していたが、2025年12月に東京証券取引所グロース市場に上場　したため当事業年度より記載している。"}],"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":1,"acquisition_cost_yen":null,"issues_decreased":null,"sale_proceeds_yen":null,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":5,"acquisition_cost_yen":263000000,"issues_decreased":1,"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":31052000000,"listed_yen":2327000000,"unlisted_yen":28725000000,"listed_issues":2,"unlisted_issues":69,"equity_yen":477531000000,"equity_basis":"jgaap_consolidated","total_assets_yen":1734358000000,"assets_basis":"jgaap_consolidated","pct_of_equity":6.502614489949344,"pct_of_assets":1.7904031347622578,"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":2327000000,"issue_count":2,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":28725000000,"issue_count":69,"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":32222000000,"equity_yen":315297000000,"equity_basis":"jgaap_consolidated","pct_of_equity":10.219570753924078,"pct_of_assets":2.147068387413176},{"year":"2023","period_end":"2023-03-31","policy_total_yen":29136000000,"equity_yen":298312000000,"equity_basis":"jgaap_consolidated","pct_of_equity":9.76695540239749,"pct_of_assets":1.8074161380871885},{"year":"2024","period_end":"2024-03-31","policy_total_yen":28792000000,"equity_yen":363168000000,"equity_basis":"jgaap_consolidated","pct_of_equity":7.928011278526743,"pct_of_assets":1.7674061142233468},{"year":"2025","period_end":"2025-03-31","policy_total_yen":29247000000,"equity_yen":440843000000,"equity_basis":"jgaap_consolidated","pct_of_equity":6.634334672434404,"pct_of_assets":1.7331719885936696},{"year":"2026","period_end":"2026-03-31","policy_total_yen":31052000000,"equity_yen":477531000000,"equity_basis":"jgaap_consolidated","pct_of_equity":6.502614489949344,"pct_of_assets":1.7904031347622578}],"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":12,"book_value_yen":6866000000},{"year":"2022","period_end":"2022-03-31","named_holdings":12,"book_value_yen":3364000000},{"year":"2023","period_end":"2023-03-31","named_holdings":8,"book_value_yen":708000000},{"year":"2024","period_end":"2024-03-31","named_holdings":2,"book_value_yen":440000000},{"year":"2025","period_end":"2025-03-31","named_holdings":1,"book_value_yen":680000000},{"year":"2026","period_end":"2026-03-31","named_holdings":2,"book_value_yen":2327000000}],"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."}}