{"entity":{"edinet_code":"E02296","sec_code":"5957","name_ja":"日東精工株式会社","name_en":"NITTOSEIKO CO.,LTD.","industry":"金属製品","industry_en":"Metal Products"},"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":"S100XVV3","filer_name":"日東精工株式会社","filer_name_en":"NITTOSEIKO CO.,LTD.","period_end":"2025-12-31","filed_date":"2026-03-31","sha256":"f223b1cd217677875ac6213bd309b240dd6d1ae1a3b73a06a11c8b16788d659b","status":"clean"},"basis":{"measurement":"carrying_amount","entity_scope":"parent_only","share_scope":"both","trust_included":"unknown","as_of":"2025-12-31","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":"協立電機㈱","held_name_en":"KYORITSU ELECTRIC CORPORATION","held_sec_code":"6874","match_status":"matched","shares":12000,"book_value_yen":31200000,"prior_shares":6000,"prior_book_value_yen":22440000,"purpose_ja":"製品販売における協力関係の維持・強化を目的として保有しております。","reciprocal":"有","pct_outstanding":0.14877262583684603,"pct_unavailable":null,"pct_basis_period_end":"2026-06-30","pct_share_classes":1,"pct_of_holder_equity":0.07609295271215648,"pct_of_holder_assets":0.05409801759721817,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":41002483000,"holder_total_assets_yen":57673093000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":["share split"],"note_refs":["2"],"share_ratio":2.0,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱鳥羽洋行","held_name_en":"TOBA,INC.","held_sec_code":"7472","match_status":"matched","shares":5000,"book_value_yen":20325000,"prior_shares":5000,"prior_book_value_yen":17500000,"purpose_ja":"製品販売における協力関係の維持・強化を目的として保有しております。","reciprocal":"有","pct_outstanding":0.12768782879615914,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.04957016871392886,"pct_of_holder_assets":0.03524173742511087,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":41002483000,"holder_total_assets_yen":57673093000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱京都フィナンシャルグループ","held_name_en":"Kyoto Financial Group, Inc.","held_sec_code":"5844","match_status":"matched","shares":800,"book_value_yen":2741000,"prior_shares":800,"prior_book_value_yen":1856000,"purpose_ja":"資金調達・運用先、情報収集先としての関係強化のため、保有しております。","reciprocal":"有","pct_outstanding":0.0002816309864380176,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.006684961005898106,"pct_of_holder_assets":0.00475264955878125,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":41002483000,"holder_total_assets_yen":57673093000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"holder_name":"株式会社京都フィナンシャルグループ","holder_name_en":"Kyoto Financial Group, Inc.","holder_sec_code":"5844","doc_id":"S100YEHZ","period_end":"2026-03-31","holder_table":"largest","shares":1805000,"book_value_yen":1368000000,"prior_shares":1855000,"prior_book_value_yen":1089000000,"purpose_ja":"銀行取引全般における長期安定的な関係強化及び銀行取引以外の様々なサービス・情報の連携などを通じた、取引先及び当社グループの長期的な企業価値向上並びに、共に京都に本社を置く企業として地域活性化の促進などのため保有。","reciprocal":"有","pct_outstanding":4.897954709087676,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.12039593364494289,"pct_of_holder_assets":0.011568058830682348,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":1136251000000,"holder_total_assets_yen":11825666000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社京都銀行","holder_name_en":"The Bank of Kyoto，Ltd.","holder_sec_code":"8369","doc_id":"S100R9CL","period_end":"2023-03-31","holder_table":"reporting","shares":1855000,"book_value_yen":1050000000,"prior_shares":1855000,"prior_book_value_yen":933000000,"purpose_ja":"銀行取引全般における長期安定的な関係強化及び銀行取引以外の様々なサービス・情報の連携などを通じた、取引先及び当行の長期的な企業価値向上並びに、共に京都に本社を置く企業として地域活性化の促進などのため保有。","reciprocal":"有","pct_outstanding":5.026593933613787,"pct_unavailable":null,"pct_basis_period_end":"2022-12-31","pct_share_classes":1,"pct_of_holder_equity":0.10580656343305014,"pct_of_holder_assets":0.009512928114607409,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":992377000000,"holder_total_assets_yen":11037611000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社テクノアソシエ","holder_name_en":"TECHNO ASSOCIE Co.,Ltd.","holder_sec_code":"8249","doc_id":"S100O969","period_end":"2022-03-31","holder_table":"reporting","shares":148692,"book_value_yen":74000000,"prior_shares":148692,"prior_book_value_yen":87000000,"purpose_ja":"保有目的は企業間取引の強化であります。定量的な保有効果は記載が困難であり、保有の合理性の検証については、a.をご参照ください。","reciprocal":"無","pct_outstanding":0.4027856060029607,"pct_unavailable":null,"pct_basis_period_end":"2021-12-31","pct_share_classes":1,"pct_of_holder_equity":0.1375976199330606,"pct_of_holder_assets":0.09930753126845242,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":53780000000,"holder_total_assets_yen":74516000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社鳥羽洋行","holder_name_en":"TOBA,INC.","holder_sec_code":"7472","doc_id":"S100YC9S","period_end":"2026-03-31","holder_table":"reporting","shares":61910,"book_value_yen":46927000,"prior_shares":61910,"prior_book_value_yen":36341000,"purpose_ja":"ネジ締め機等の自動化システムに関係する産業機器全般の主要仕入先であり、当社の今後の事業展開における商品の提供協力関係維持のため。","reciprocal":"有","pct_outstanding":0.16799577619923436,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.21519745158378345,"pct_of_holder_assets":0.16068393206562623,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":21806485000,"holder_total_assets_yen":29204538000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"協立電機株式会社","holder_name_en":"KYORITSU ELECTRIC CORPORATION","holder_sec_code":"6874","doc_id":"S100Z39B","period_end":"2026-06-30","holder_table":"reporting","shares":46688,"book_value_yen":35000000,"prior_shares":45471,"prior_book_value_yen":26000000,"purpose_ja":"当社事業の仕入先であり、取引関係の維持、強化のために保有しております。持株会への拠出により株式数が増加しております。当事業年度の受取配当金額は、1,055千円であります。 ","reciprocal":"有","pct_outstanding":0.12669014374398085,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.1509313347379722,"pct_of_holder_assets":0.10046675130368526,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":23189353000,"holder_total_assets_yen":34837396000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社たけびし","holder_name_en":"TAKEBISHI CORPORATION","holder_sec_code":"7510","doc_id":"S100YHGY","period_end":"2026-03-31","holder_table":"reporting","shares":26361,"book_value_yen":19000000,"prior_shares":24765,"prior_book_value_yen":14000000,"purpose_ja":"同社は当社の主要取引先であります。保有目的は取引関係の維持及び強化です。定量的な保有効果の記載については守秘義務等の観点から困難でありますが、保有の合理性については事業戦略上の重要性や事業上の関係等を踏まえて十分に検証を実施しております。株式数が増加した理由は、同社の取引先持株会に加入していることに伴う持分数増加のためです","reciprocal":"無","pct_outstanding":0.07153184713920234,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.04294755877034358,"pct_of_holder_assets":0.029280771779500378,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":44240000000,"holder_total_assets_yen":64889000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"英和株式会社","holder_name_en":"EIWA CORPORATION","holder_sec_code":"9857","doc_id":"S100YCFQ","period_end":"2026-03-31","holder_table":"reporting","shares":5330,"book_value_yen":4040000,"prior_shares":5010,"prior_book_value_yen":2941000,"purpose_ja":"取引関係の維持・強化のため保有しており、主に工業用計測制御機器に関する仕入取引を行っております。（定量的な保有効果）(注１)（株式数が増加した理由）取引先持株会を通じた株式の取得","reciprocal":"無","pct_outstanding":0.014463212520463885,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":0.021273590911584955,"pct_of_holder_assets":0.012323037069830687,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":18990682000,"holder_total_assets_yen":32784126000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社　神戸製鋼所","holder_name_en":"Kobe Steel, Ltd.","holder_sec_code":"5406","doc_id":"S100YCDA","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":202000,"prior_book_value_yen":118000000,"purpose_ja":"2025年12月に、当社が保有する日東精工株式を全て売却いたしました。","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":1330453000000,"holder_total_assets_yen":2865184000000,"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　定量的な保有効果については記載が困難であります。「②保有目的が純投資目的以外の目的である投資株式」　　の「ａ．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」に記載の方法に基づき検証を実施しており、十分な保有合理性があると判断しております。"},{"holder_table":"reporting","note_no":"2","text_ja":"２　協立電機㈱は、2025年６月30日を基準日として2025年７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":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":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":96217000,"listed_yen":54266000,"unlisted_yen":41951000,"listed_issues":3,"unlisted_issues":6,"equity_yen":41002483000,"equity_basis":"jgaap_consolidated","total_assets_yen":57673093000,"assets_basis":"jgaap_consolidated","pct_of_equity":0.2346613984328705,"pct_of_assets":0.1668316974087032,"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":54266000,"issue_count":3,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":41951000,"issue_count":6,"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":583317000,"equity_yen":32702138000,"equity_basis":"jgaap_consolidated","pct_of_equity":1.7837274125624447,"pct_of_assets":1.1454653872756073},{"year":"2022","period_end":"2022-12-31","policy_total_yen":162748000,"equity_yen":34501994000,"equity_basis":"jgaap_consolidated","pct_of_equity":0.47170607008974613,"pct_of_assets":0.30472481110948757},{"year":"2023","period_end":"2023-12-31","policy_total_yen":75391000,"equity_yen":36402799000,"equity_basis":"jgaap_consolidated","pct_of_equity":0.20710220661878226,"pct_of_assets":0.1413292311220048},{"year":"2024","period_end":"2024-12-31","policy_total_yen":150296000,"equity_yen":38591629000,"equity_basis":"jgaap_consolidated","pct_of_equity":0.3894523343391387,"pct_of_assets":0.2702958613508984},{"year":"2025","period_end":"2025-12-31","policy_total_yen":96217000,"equity_yen":41002483000,"equity_basis":"jgaap_consolidated","pct_of_equity":0.2346613984328705,"pct_of_assets":0.1668316974087032}],"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":5,"book_value_yen":71892000},{"year":"2022","period_end":"2022-12-31","named_holdings":5,"book_value_yen":74371000},{"year":"2023","period_end":"2023-12-31","named_holdings":5,"book_value_yen":37927000},{"year":"2024","period_end":"2024-12-31","named_holdings":3,"book_value_yen":41796000},{"year":"2025","period_end":"2025-12-31","named_holdings":3,"book_value_yen":54266000}],"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."}}