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Corporation","holder_sec_code":"4021","doc_id":"S100YIML","period_end":"2026-03-31","holder_table":"reporting","shares":41000,"book_value_yen":161000000,"prior_shares":41000,"prior_book_value_yen":129000000,"purpose_ja":"主に化学品・機能性材料セグメントにおける営業取引関係の維持・発展を保有目的としております。","reciprocal":"無","pct_outstanding":0.07644058766256,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.062149924146210594,"pct_of_holder_assets":0.045342150175454406,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":259051000000,"holder_total_assets_yen":355078000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東海染工株式会社","holder_name_en":"Tokai Senko K.K.","holder_sec_code":"3577","doc_id":"S100YJEV","period_end":"2026-03-31","holder_table":"reporting","shares":28200,"book_value_yen":111390000,"prior_shares":28200,"prior_book_value_yen":89394000,"purpose_ja":"染色加工事業に係る仕入先であり、原材料の安定供給など取引関係の維持・強化のため保有しております。","reciprocal":"有","pct_outstanding":0.052576209075224194,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.1972838778454435,"pct_of_holder_assets":0.7467718659213652,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":9303558000,"holder_total_assets_yen":14916202000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"積水樹脂株式会社","holder_name_en":"Sekisui Jushi Corporation","holder_sec_code":"4212","doc_id":"S100YIY2","period_end":"2026-03-31","holder_table":"reporting","shares":23800,"book_value_yen":94000000,"prior_shares":47500,"prior_book_value_yen":150000000,"purpose_ja":"当社の原材料の国内外での調達先であり、関係を維持・強化することが、中長期的な企業価値向上に資すると判断して保有しているが、縮減を図っている。(注)１","reciprocal":"有","pct_outstanding":0.04437282893582751,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.09297449136029594,"pct_of_holder_assets":0.065933449301386,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":101103000000,"holder_total_assets_yen":142568000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"大日精化工業株式会社","holder_name_en":"DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.","holder_sec_code":"4116","doc_id":"S100YGML","period_end":"2026-03-31","holder_table":"reporting","shares":17600,"book_value_yen":69000000,"prior_shares":17600,"prior_book_value_yen":55000000,"purpose_ja":"主にトナー用顔料や塗料用分散体等の販売取引があり、取引関係の維持・発展のため、保有を継続しております。","reciprocal":"有","pct_outstanding":0.03281352055758673,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04886339494370087,"pct_of_holder_assets":0.03358579466910691,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":141210000000,"holder_total_assets_yen":205444000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"リケンテクノス株式会社","holder_name_en":"RIKEN TECHNOS CORPORATION","holder_sec_code":"4220","doc_id":"S100Y9PN","period_end":"2026-03-31","holder_table":"reporting","shares":14800,"book_value_yen":58460000,"prior_shares":14800,"prior_book_value_yen":46916000,"purpose_ja":"製品の販売先であり、営業取引の円滑化を図るために保有しております。","reciprocal":"有","pct_outstanding":0.027593187741607024,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07452624490922707,"pct_of_holder_assets":0.04908322922108173,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":78442165000,"holder_total_assets_yen":119103818000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ニチバン株式会社","holder_name_en":"NICHIBAN CO., LTD.","holder_sec_code":"4218","doc_id":"S100YGTG","period_end":"2026-03-31","holder_table":"reporting","shares":10000,"book_value_yen":39000000,"prior_shares":10000,"prior_book_value_yen":31000000,"purpose_ja":"主要原材料等の仕入先であり、中長期的な提携関係を維持するため保有しております。","reciprocal":"無","pct_outstanding":0.0186440457713561,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.08798646362098139,"pct_of_holder_assets":0.05794345313266079,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":44325000000,"holder_total_assets_yen":67307000000,"implausible":false,"reciprocal_held_both_ways":false}],"reclassified":[{"holder_table":"reporting","direction":"to_pure","held_name_raw":"Ainos Inc.","held_name_en":null,"held_sec_code":null,"match_status":"foreign","shares":2222,"book_value_yen":0,"fy_of_change_ja":"2022年３月期","reason_ja":"当社は、政策保有目的の株式については、毎期、上記（５）②ａ．のプロセスにより総合的な保有意義の検証を行っております。Ainos Inc.については、もともと営業戦略の一環としての出資でしたが、当初の目論見が成就できなかったことで保有意義が低下することになり、売却も視野に2022年３月期に保有目的を純投資に振り替えました。尚、新たなビジネス関係の構築が進んだため、2025年３月期に保有目的を政策保有目的へ変更しております。","implausible":false}],"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．議決権行使権限の対象となる株式数を記載しております。"},{"holder_table":"reporting","note_no":"2","text_ja":"２．みなし保有株式の事業年度末日における時価に議決権行使権限の対象となる株式数を乗じて得た額を記載しております。"},{"holder_table":"reporting","note_no":"3","text_ja":"３．保有目的には、当社が有する権限の内容を記載しております。"},{"holder_table":"reporting","note_no":"4","text_ja":"４．貸借対照表計上額の上位銘柄を選定する段階で、特定投資株式とみなし保有株式を合算していません。"},{"holder_table":"reporting","note_no":"5","text_ja":"５．西川ゴム工業株式会社は、2025年４月１日付で、普通株式１株を２株とする株式分割を行っております。"}],"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":5,"acquisition_cost_yen":10000000,"issues_decreased":6,"sale_proceeds_yen":2330000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":2,"acquisition_cost_yen":198000000,"issues_decreased":3,"sale_proceeds_yen":388000000,"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":21904000000,"listed_yen":15533000000,"unlisted_yen":6371000000,"listed_issues":25,"unlisted_issues":61,"equity_yen":245938000000,"equity_basis":"jgaap_consolidated","total_assets_yen":498138000000,"assets_basis":"jgaap_consolidated","pct_of_equity":8.90630972033602,"pct_of_assets":4.397175079997912,"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":15533000000,"issue_count":25,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":6371000000,"issue_count":61,"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":37813000000,"equity_yen":176914000000,"equity_basis":"jgaap_consolidated","pct_of_equity":21.37366177916954,"pct_of_assets":9.719091448854801},{"year":"2023","period_end":"2023-03-31","policy_total_yen":21381000000,"equity_yen":181507000000,"equity_basis":"jgaap_consolidated","pct_of_equity":11.779710975334284,"pct_of_assets":5.620027178841508},{"year":"2024","period_end":"2024-03-31","policy_total_yen":16375000000,"equity_yen":206754000000,"equity_basis":"jgaap_consolidated","pct_of_equity":7.920040241059423,"pct_of_assets":3.8320228400262097},{"year":"2025","period_end":"2025-03-31","policy_total_yen":16685000000,"equity_yen":216555000000,"equity_basis":"jgaap_consolidated","pct_of_equity":7.704740135300501,"pct_of_assets":3.7751260260831003},{"year":"2026","period_end":"2026-03-31","policy_total_yen":21904000000,"equity_yen":245938000000,"equity_basis":"jgaap_consolidated","pct_of_equity":8.90630972033602,"pct_of_assets":4.397175079997912}],"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":49,"book_value_yen":31101000000},{"year":"2023","period_end":"2023-03-31","named_holdings":43,"book_value_yen":16407000000},{"year":"2024","period_end":"2024-03-31","named_holdings":40,"book_value_yen":10048000000},{"year":"2025","period_end":"2025-03-31","named_holdings":31,"book_value_yen":10030000000},{"year":"2026","period_end":"2026-03-31","named_holdings":28,"book_value_yen":15523000000}],"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."}}