{"entity":{"edinet_code":"E02272","sec_code":"7733","name_ja":"オリンパス株式会社","name_en":"OLYMPUS CORPORATION","industry":"精密機器","industry_en":"Precision Instruments"},"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":"S100YDN3","filer_name":"オリンパス株式会社","filer_name_en":"OLYMPUS CORPORATION","period_end":"2026-03-31","filed_date":"2026-06-18","sha256":"1c8737704acd4f3d0f62c0d955cc9e76ff3191cb0cc610c1296667dd741c49c2","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":"㈱オハラ","held_name_en":"OHARA INC.","held_sec_code":"5218","match_status":"matched","shares":400000,"book_value_yen":427000000,"prior_shares":400000,"prior_book_value_yen":424000000,"purpose_ja":"円滑な取引関係の維持・強化のため、同社株式を保有しています。同社は当社の医療用内視鏡に用いる光学ガラスの供給パートナーであり、協働し強固なサプライチェーンを構築しています。","reciprocal":"無","pct_outstanding":1.6417328490221428,"pct_unavailable":null,"pct_basis_period_end":"2025-10-31","pct_share_classes":1,"pct_of_holder_equity":0.052583616570612286,"pct_of_holder_assets":0.02777846446893691,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":812040000000,"holder_total_assets_yen":1537162000000,"implausible":false,"reciprocal_held_both_ways":false,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"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":3800000,"book_value_yen":5656000000,"prior_shares":3800000,"prior_book_value_yen":7400000000,"purpose_ja":"主要取引先であり、保有により取引関係が強化され、主に建築セグメントにおける中長期的な工場等の工事受注量の確保等に資するため、保有継続が適当と判断しております。","reciprocal":"無","pct_outstanding":0.345108621122137,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.4029134762539035,"pct_of_holder_assets":0.5665069776712517,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":403161000000,"holder_total_assets_yen":998399000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本通運株式会社","holder_name_en":"NIPPON EXPRESS CO., LTD.","holder_sec_code":"9062","doc_id":"S100NRU9","period_end":"2021-12-31","holder_table":"reporting","shares":800000,"book_value_yen":2119000000,"prior_shares":800000,"prior_book_value_yen":1832000000,"purpose_ja":"主に航空事業に係る営業取引維持・強化のため保有しています。","reciprocal":"無","pct_outstanding":0.06284206047983842,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.32255020153679415,"pct_of_holder_assets":0.13094626753700514,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":656952000000,"holder_total_assets_yen":1618221000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社近鉄エクスプレス","holder_name_en":"Kintetsu World Express, Inc.","holder_sec_code":"9375","doc_id":"S100O92P","period_end":"2022-03-31","holder_table":"reporting","shares":800000,"book_value_yen":1871000000,"prior_shares":800000,"prior_book_value_yen":1832000000,"purpose_ja":"営業取引上の政策目的。","reciprocal":"無","pct_outstanding":0.06284206047983842,"pct_unavailable":null,"pct_basis_period_end":"2022-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8864903793761875,"pct_of_holder_assets":0.34777016314156717,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":211057000000,"holder_total_assets_yen":537999000000,"implausible":false,"reciprocal_held_both_ways":false},{"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":1251444,"book_value_yen":1862000000,"prior_shares":1651444,"prior_book_value_yen":3216000000,"purpose_ja":"設備工事事業において、主に産業空調工事の取引を行っており、取引関係の構築・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。なお、当事業年度において一部の保有株式を売却しております。","reciprocal":"無","pct_outstanding":0.1136537140135715,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":2.2523557802803955,"pct_of_holder_assets":1.3752760523225325,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":82669000000,"holder_total_assets_yen":135391000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ＮＩＰＰＯＮ　ＥＸＰＲＥＳＳホールディングス株式会社","holder_name_en":"NIPPON EXPRESS HOLDINGS, INC.","holder_sec_code":"9147","doc_id":"S100XTG8","period_end":"2025-12-31","holder_table":"reporting","shares":800000,"book_value_yen":1587000000,"prior_shares":800000,"prior_book_value_yen":1896000000,"purpose_ja":"同社は、当社グループにおける主要な顧客であり、主にロジスティクス事業セグメントにおける航空事業に係る営業取引維持・強化のため同社株式を保有しています。","reciprocal":"無","pct_outstanding":0.07265444655202885,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.1913223788110767,"pct_of_holder_assets":0.06571469388008622,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":829490000000,"holder_total_assets_yen":2414985000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ＳＯＭＰＯホールディングス株式会社","holder_name_en":"Sompo Holdings, Inc.","holder_sec_code":"8630","doc_id":"S100YC6Z","period_end":"2026-03-31","holder_table":"largest","shares":678300,"book_value_yen":1009000000,"prior_shares":863300,"prior_book_value_yen":1681000000,"purpose_ja":"上記①イ.保有目的Ａ","reciprocal":"無","pct_outstanding":0.061601888870301456,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.019524662512628625,"pct_of_holder_assets":0.005423651118078421,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":5167823000000,"holder_total_assets_yen":18603704000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社トーエネック","holder_name_en":"TOENEC CORPORATION","holder_sec_code":"1946","doc_id":"S100YIKH","period_end":"2026-03-31","holder_table":"reporting","shares":541700,"book_value_yen":806000000,"prior_shares":677200,"prior_book_value_yen":1318000000,"purpose_ja":"工場や事務所等において、建設・保守・メンテナンス等の設備工事業の取引を行っており、取引関係の維持・強化を図るために継続して保有している。［株式数が変動した理由］一部売却のため。","reciprocal":"無","pct_outstanding":0.04919614212154253,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.526212704837762,"pct_of_holder_assets":0.2582894572396356,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":153170000000,"holder_total_assets_yen":312053000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"朝日インテック株式会社","holder_name_en":"ASAHI INTECC CO., LTD.","holder_sec_code":"7747","doc_id":"S100Z3SS","period_end":"2026-06-30","holder_table":"reporting","shares":464000,"book_value_yen":788000000,"prior_shares":464000,"prior_book_value_yen":795000000,"purpose_ja":"（保有目的）安定的な営業取引関係の維持・強化 （定量的な保有効果）（注）","reciprocal":"無","pct_outstanding":0.04213957900017673,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.4519437020383349,"pct_of_holder_assets":0.3609959456673615,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":174358000000,"holder_total_assets_yen":218285000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社アルゴグラフィックス","holder_name_en":"ARGO GRAPHICS Inc.","holder_sec_code":"7595","doc_id":"S100YF23","period_end":"2026-03-31","holder_table":"reporting","shares":288000,"book_value_yen":428688000,"prior_shares":288000,"prior_book_value_yen":560880000,"purpose_ja":"業務上における取引関係の維持・強化当事業年度も取引関係を維持（注）","reciprocal":"無","pct_outstanding":0.026155600758730385,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8343688789096589,"pct_of_holder_assets":0.5294633088885372,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":51378714000,"holder_total_assets_yen":80966517000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ヤマシタヘルスケアホールディングス株式会社","holder_name_en":"YAMASHITA HEALTH CARE HOLDINGS,INC.","holder_sec_code":"9265","doc_id":"S100YXFY","period_end":"2026-05-31","holder_table":"largest","shares":172161,"book_value_yen":307000000,"prior_shares":170883,"prior_book_value_yen":316000000,"purpose_ja":"（保有目的及び株式数が増加した理由）取引関係維持・強化を目的として保有しています。株式数の増加は、取引先持株会による株式の取得によるものです。（定量的な保有効果）注１ ","reciprocal":"無","pct_outstanding":0.0156353277160548,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":3.27991452991453,"pct_of_holder_assets":1.1333013400273173,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":9360000000,"holder_total_assets_yen":27089000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"センコーグループホールディングス株式会社","holder_name_en":"SENKO Group Holdings Co., Ltd.","holder_sec_code":"9069","doc_id":"S100YH4R","period_end":"2026-03-31","holder_table":"reporting","shares":200000,"book_value_yen":297000000,"prior_shares":200000,"prior_book_value_yen":389000000,"purpose_ja":"（保有目的）取引先との円滑で長期的な関係の構築のため（業務提携等の概要）物流業務等の取引","reciprocal":"無","pct_outstanding":0.018163611638007213,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.11242377327493858,"pct_of_holder_assets":0.03613050777353349,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":264179000000,"holder_total_assets_yen":822020000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"メディアスホールディングス株式会社","holder_name_en":"MEDIUS HOLDINGS Co.,Ltd.","holder_sec_code":"3154","doc_id":"S100Z48T","period_end":"2026-06-30","holder_table":"reporting","shares":157725,"book_value_yen":267976000,"prior_shares":155780,"prior_book_value_yen":267163000,"purpose_ja":"医療機器調達等における関係維持・強化のため保有しております。定量的な保有効果については、(注)に記載しております。取引先持株会を通じた株式の取得により、株式数が増加しております。 ","reciprocal":"無","pct_outstanding":0.014324278228023438,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.2916532207823443,"pct_of_holder_assets":0.23800089620691534,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":20746745000,"holder_total_assets_yen":112594534000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社　ヤマウラ","holder_name_en":"YAMAURA CORPORATION","holder_sec_code":"1780","doc_id":"S100YK4B","period_end":"2026-03-31","holder_table":"reporting","shares":40000,"book_value_yen":59540000,"prior_shares":40000,"prior_book_value_yen":77900000,"purpose_ja":"取引先との戦略的な関係強化のために保有しております。定量的な保有効果の記載は困難ですが、保有目的や取引状況等により合理性を検証しております。","reciprocal":"無","pct_outstanding":0.0036327223276014426,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2274175239067229,"pct_of_holder_assets":0.16535443545499035,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":26180920000,"holder_total_assets_yen":36007501000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"オカモト株式会社","holder_name_en":"OKAMOTO INDUSTRIES, INC.","holder_sec_code":"5122","doc_id":"S100YHXH","period_end":"2026-03-31","holder_table":"reporting","shares":40000,"book_value_yen":59000000,"prior_shares":40000,"prior_book_value_yen":77000000,"purpose_ja":"大手医療機器メーカーとして、生活用品事業における有効的かつ機動的な製品開発及び継続的な販売体制の構築を目的としております。","reciprocal":"無","pct_outstanding":0.0036327223276014426,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.05333044083484738,"pct_of_holder_assets":0.03593901332180036,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":110631000000,"holder_total_assets_yen":164167000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"ニチアス株式会社","holder_name_en":"NICHIAS CORPORATION","holder_sec_code":"5393","doc_id":"S100YG7B","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":40000,"prior_book_value_yen":77000000,"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":239612000000,"holder_total_assets_yen":307123000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"佐鳥電機株式会社","holder_name_en":"SATORI ELECTRIC CO., LTD.","holder_sec_code":"7420","doc_id":"S100WKMY","period_end":"2025-05-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":144500,"prior_book_value_yen":357000000,"purpose_ja":"－","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2025-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33306000000,"holder_total_assets_yen":79150000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社セコニック","holder_name_en":"SEKONIC CORPORATION","holder_sec_code":"7758","doc_id":"S100K8BB","period_end":"2020-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":68000,"prior_book_value_yen":326000000,"purpose_ja":"当事業年度における持ち合いの解消に伴い、保有目的を純投資目的に変更したため減少したもの","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5203000000,"holder_total_assets_yen":6767000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"川澄化学工業株式会社","holder_name_en":"Kawasumi Laboratories, Incorporated","holder_sec_code":"7703","doc_id":"S100IXUS","period_end":"2020-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":250800,"prior_book_value_yen":1205000000,"purpose_ja":"当社事業の協力体制維持・強化のために保有しておりましたが、保有目的の合理性や定量的な保有効果が認められないと判断し、当事業年度において売却しております。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":null,"pct_share_classes":null,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":38992000000,"holder_total_assets_yen":44130000000,"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":[],"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":null,"sale_proceeds_yen":null,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":1,"acquisition_cost_yen":2099000000,"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":2567000000,"listed_yen":427000000,"unlisted_yen":2140000000,"listed_issues":1,"unlisted_issues":6,"equity_yen":812040000000,"equity_basis":"ifrs_consolidated_excl_nci","total_assets_yen":1537162000000,"assets_basis":"ifrs_consolidated","pct_of_equity":0.3161174326387863,"pct_of_assets":0.1669960615732109,"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":427000000,"issue_count":1,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":2140000000,"issue_count":6,"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":1597000000,"equity_yen":510168000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":0.3130341377742234,"pct_of_assets":0.11759949749594809},{"year":"2023","period_end":"2023-03-31","policy_total_yen":534000000,"equity_yen":640085000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":0.08342641992860324,"pct_of_assets":0.03540390954632608},{"year":"2024","period_end":"2024-03-31","policy_total_yen":580000000,"equity_yen":757186000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":0.07659940886387229,"pct_of_assets":0.03780432481475881},{"year":"2025","period_end":"2025-03-31","policy_total_yen":466000000,"equity_yen":751733000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":0.061990094887413486,"pct_of_assets":0.03252313958568591},{"year":"2026","period_end":"2026-03-31","policy_total_yen":2567000000,"equity_yen":812040000000,"equity_basis":"ifrs_consolidated_excl_nci","pct_of_equity":0.3161174326387863,"pct_of_assets":0.1669960615732109}],"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":9,"book_value_yen":1532000000},{"year":"2023","period_end":"2023-03-31","named_holdings":2,"book_value_yen":470000000},{"year":"2024","period_end":"2024-03-31","named_holdings":1,"book_value_yen":538000000},{"year":"2025","period_end":"2025-03-31","named_holdings":1,"book_value_yen":424000000},{"year":"2026","period_end":"2026-03-31","named_holdings":1,"book_value_yen":427000000}],"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."}}