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CORPORATION","holder_sec_code":"1967","doc_id":"S100YBIH","period_end":"2026-03-20","holder_table":"reporting","shares":163000,"book_value_yen":298127000,"prior_shares":326000,"prior_book_value_yen":401306000,"purpose_ja":"主要調達先であり、今後の安定した調達のため良好な関係維持を目的とし保有しています。なお、当事業年度に一部売却を行いました。","reciprocal":"有","pct_outstanding":0.18677878680211008,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.6956613494033896,"pct_of_holder_assets":0.4826684299549312,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":42855191000,"holder_total_assets_yen":61766418000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"橋本総業ホールディングス株式会社","holder_name_en":"HASHIMOTO SOGYO HOLDINGS CO.,LTD.","holder_sec_code":"7570","doc_id":"S100YK09","period_end":"2026-03-31","holder_table":"reporting","shares":165553,"book_value_yen":292000000,"prior_shares":248204,"prior_book_value_yen":288000000,"purpose_ja":"・友好的な関係の維持、拡充を目的に株式を保有しております。定量的な保有効果については記載は困難でありますが、当社事業における同社との関係性を踏まえ検証した結果、仕入先としての関係の維持、拡充のために保有する合理性があると判断しております。・前事業年度から株式数は減少しております。","reciprocal":"有","pct_outstanding":0.18970422387392474,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.8004605389402122,"pct_of_holder_assets":0.34355366261147846,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":36479000000,"holder_total_assets_yen":84994000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"イハラサイエンス株式会社","holder_name_en":"IHARA SCIENCE CORPORATION","holder_sec_code":"5999","doc_id":"S100OHH5","period_end":"2022-03-31","holder_table":"reporting","shares":404600,"book_value_yen":277000000,"prior_shares":404600,"prior_book_value_yen":259000000,"purpose_ja":"（保有目的）良好な取引関係維持のため","reciprocal":"有","pct_outstanding":0.44895639331824616,"pct_unavailable":null,"pct_basis_period_end":"2021-12-31","pct_share_classes":1,"pct_of_holder_equity":1.248929167230263,"pct_of_holder_assets":1.0025334781035107,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":22179000000,"holder_total_assets_yen":27630000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社ＰＩＬＬＡＲ","holder_name_en":"PILLAR Corporation","holder_sec_code":"6490","doc_id":"S100YD79","period_end":"2026-03-31","holder_table":"reporting","shares":88798,"book_value_yen":157000000,"prior_shares":88798,"prior_book_value_yen":103000000,"purpose_ja":"シール関連製品等の取引を行っており、同社との良好な取引関係の維持・発展等を目的とし、継続して保有しております。（注）１","reciprocal":"有","pct_outstanding":0.10175204116842805,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.19768818152056208,"pct_of_holder_assets":0.14863342453303544,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":79418000000,"holder_total_assets_yen":105629000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社イクヨ","holder_name_en":"IKUYO CO.,LTD.","holder_sec_code":"7273","doc_id":"S100YLTN","period_end":"2026-03-31","holder_table":"reporting","shares":65000,"book_value_yen":114985000,"prior_shares":65000,"prior_book_value_yen":75660000,"purpose_ja":"（保有目的）企業間取引の強化（定量的な保有効果）（注）","reciprocal":"無","pct_outstanding":0.07448233829531997,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.707338785227683,"pct_of_holder_assets":0.349625748266299,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":16256001000,"holder_total_assets_yen":32888024000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"アルコニックス株式会社","holder_name_en":"ＡＬＣＯＮＩＸ　ＣＯＲＰＯＲＡＴＩＯＮ","holder_sec_code":"3036","doc_id":"S100YCV6","period_end":"2026-03-31","holder_table":"reporting","shares":63650,"book_value_yen":112000000,"prior_shares":63650,"prior_book_value_yen":74000000,"purpose_ja":"  当社のバルブ製品等建設・産業資材関連における主要取引先であり、当該会社株式を保有することにより取引関係の強化を図ることを目的としております。","reciprocal":"有","pct_outstanding":0.07293539742303255,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.14010157364088965,"pct_of_holder_assets":0.050353599158375555,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":79942000000,"holder_total_assets_yen":222427000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社ＭＩＥコーポレーション","holder_name_en":"MIE CORPORATION CO., LTD","holder_sec_code":"3442","doc_id":"S100YGQT","period_end":"2026-03-31","holder_table":"largest","shares":51910,"book_value_yen":91730000,"prior_shares":49883,"prior_book_value_yen":58064000,"purpose_ja":"継手等の取引を行っており、同社の取引先持株会に参加しております。事業上の関係を勘案し、同社との良好な関係の維持、強化を図るため、継続して保有しています。（注）当事業年度において持株会を通じた買付により、保有株式が増加しております。","reciprocal":"無","pct_outstanding":0.059482741244770154,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":2.791199248052809,"pct_of_holder_assets":1.0870089455160021,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":3286401000,"holder_total_assets_yen":8438753000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"東テク株式会社","holder_name_en":"TOTECH CORPORATION","holder_sec_code":"9960","doc_id":"S100YGTS","period_end":"2026-03-31","holder_table":"reporting","shares":50000,"book_value_yen":88000000,"prior_shares":50000,"prior_book_value_yen":58000000,"purpose_ja":"主に工事セグメントにおける主要仕入メーカーであります。同社とは取引基本契約書に基づく販売代理店契約を締結しており、相互の事業拡大や取引関係の強化を目的に株式を保有しております。定量的な保有効果については経営戦略上、記載が困難でありますが、保有の合理性は当該仕入先からの仕入取引実績及び配当金の受取状況等により検証しております。","reciprocal":"有","pct_outstanding":0.05729410638101536,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.11945160852450115,"pct_of_holder_assets":0.07644197359277276,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":73670000000,"holder_total_assets_yen":115120000000,"implausible":false,"reciprocal_held_both_ways":true},{"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":18946,"book_value_yen":33000000,"prior_shares":18946,"prior_book_value_yen":22000000,"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。","reciprocal":"無","pct_outstanding":0.02170988278989434,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.02154468890774956,"pct_of_holder_assets":0.010575126661176146,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":153170000000,"holder_total_assets_yen":312053000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社トーモク","holder_name_en":"TOMOKU CO., LTD.","holder_sec_code":"3946","doc_id":"S100YFA2","period_end":"2026-03-31","holder_table":"reporting","shares":839,"book_value_yen":1000000,"prior_shares":411,"prior_book_value_yen":0,"purpose_ja":"段ボール製品の取引を行っており、同社との良好な関係の維持・強化のため保有しております。取引先持株会における株式取得により、株式数が増加しております。","reciprocal":"無","pct_outstanding":null,"pct_unavailable":"holding restated onto a share base the issuer has not filed yet","pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.0009711943748421809,"pct_of_holder_assets":0.000446757656309335,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":102966000000,"holder_total_assets_yen":223835000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社タクマ","holder_name_en":"TAKUMA CO., LTD.","holder_sec_code":"6013","doc_id":"S100YB3J","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":277500,"prior_book_value_yen":323000000,"purpose_ja":"－","reciprocal":"無","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":113586000000,"holder_total_assets_yen":190475000000,"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.保有目的及び保有効果は、当事業年度末を基準にして記載しております。各銘柄の保有の適否の検証方法については、上記「②イ. 保有方針及び保有の合理性を検証する方法並びに個別銘柄の保有の適否に関する取締役会等における検証の内容」に記載の通りです。個別銘柄の定量的な保有効果の記載は、取引先との関係等を考慮し開示を控えていますが、取得価額、時価、資本コストと配当金・関連取引利益等の状況の検証、及び、定性的な保有意義の検証・確認により、取締役会で当該保有状況について報告し、審議しています。"},{"holder_table":"reporting","note_no":"2","text_ja":"２.伸銅品事業に関して、企業の開示する株主・投資家向け情報の取得のため保有しています。当該情報は僅少な株式取得にて行っております。"},{"holder_table":"reporting","note_no":"3","text_ja":"３.特定のセグメントを対象としていませんが、株主総会の運営及び企業の開示する株主・投資家向け情報の取得のため保有しています。当該情報は僅少な株式取得にて行っております。"}],"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":4,"acquisition_cost_yen":58000000,"issues_decreased":5,"sale_proceeds_yen":115000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":null,"acquisition_cost_yen":null,"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":5617000000,"listed_yen":5413000000,"unlisted_yen":204000000,"listed_issues":15,"unlisted_issues":13,"equity_yen":119790000000,"equity_basis":"jgaap_consolidated","total_assets_yen":184325000000,"assets_basis":"jgaap_consolidated","pct_of_equity":4.6890391518490695,"pct_of_assets":3.0473348704733487,"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":5413000000,"issue_count":15,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":204000000,"issue_count":13,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"unlisted"}],"scale_history":[{"year":"2021","period_end":"2021-12-31","policy_total_yen":6502000000,"equity_yen":81253000000,"equity_basis":"jgaap_consolidated","pct_of_equity":8.002166073868041,"pct_of_assets":4.533569471269497},{"year":"2022","period_end":"2022-12-31","policy_total_yen":6838000000,"equity_yen":91042000000,"equity_basis":"jgaap_consolidated","pct_of_equity":7.510819182355396,"pct_of_assets":4.481906547201594},{"year":"2023","period_end":"2023-12-31","policy_total_yen":6566000000,"equity_yen":102207000000,"equity_basis":"jgaap_consolidated","pct_of_equity":6.42421751934799,"pct_of_assets":3.9389776415326376},{"year":"2024","period_end":"2024-12-31","policy_total_yen":5358000000,"equity_yen":109809000000,"equity_basis":"jgaap_consolidated","pct_of_equity":4.879381471464088,"pct_of_assets":3.10778047167732},{"year":"2025","period_end":"2025-12-31","policy_total_yen":5617000000,"equity_yen":119790000000,"equity_basis":"jgaap_consolidated","pct_of_equity":4.6890391518490695,"pct_of_assets":3.0473348704733487}],"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":"2021","period_end":"2021-12-31","named_holdings":33,"book_value_yen":6288000000},{"year":"2022","period_end":"2022-12-31","named_holdings":33,"book_value_yen":6622000000},{"year":"2023","period_end":"2023-12-31","named_holdings":33,"book_value_yen":6346000000},{"year":"2024","period_end":"2024-12-31","named_holdings":31,"book_value_yen":5148000000},{"year":"2025","period_end":"2025-12-31","named_holdings":17,"book_value_yen":5408000000}],"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."}}