{"entity":{"edinet_code":"E02294","sec_code":"7769","name_ja":"リズム株式会社","name_en":"RHYTHM CO.,LTD.","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":"S100YFZJ","filer_name":"リズム株式会社","filer_name_en":"RHYTHM CO.,LTD.","period_end":"2026-03-31","filed_date":"2026-06-22","sha256":"14805f9443d995009bd2da19db2b7bd84a1dd899e198cb166c31afe247841d84","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":"シチズン時計㈱","held_name_en":"Citizen Watch Co., Ltd.","held_sec_code":"7762","match_status":"matched","shares":1175140,"book_value_yen":1956000000,"prior_shares":1172029,"prior_book_value_yen":1045000000,"purpose_ja":"精密部品・生活用品事業における取引維持・強化のために保有しています。同社とは、国内向けクロックの商標使用許諾を受けており、同社ブランド製品の製造・販売を行っております。取引先・投資先としての実績から保有の合理性を検証しています。株式数の増加は、持株会参加に伴うものです。","reciprocal":"有","pct_outstanding":0.4802073921878952,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":5.763620826826178,"pct_of_holder_assets":3.9950164416576457,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33937000000,"holder_total_assets_yen":48961000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱三井住友フィナンシャルグループ","held_name_en":"Sumitomo Mitsui Financial Group, Inc.","held_sec_code":"8316","match_status":"matched","shares":264000,"book_value_yen":1321000000,"prior_shares":264000,"prior_book_value_yen":1001000000,"purpose_ja":"金融取引の円滑化のために保有しています。同社とは、資金調達をはじめとした総合的な取引や、金融情勢、経済環境等の情報交換を通じて、中長期的な企業価値の向上を目指し連携しています。取引先・投資先としての実績から保有の合理性を検証しています。","reciprocal":"有","pct_outstanding":0.006915629612122453,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":3.892506703597843,"pct_of_holder_assets":2.6980658074794226,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33937000000,"holder_total_assets_yen":48961000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱タムロン","held_name_en":"Tamron Co.,Ltd.","held_sec_code":"7740","match_status":"matched","shares":905299,"book_value_yen":896000000,"prior_shares":16394,"prior_book_value_yen":56000000,"purpose_ja":"精密部品事業における取引維持・強化のために保有しています。同社とは、金型製作・樹脂製品の提供を通じた取引により、相互に協力して製品の品質向上や製品販売の推進に連携しています。取引先・投資先としての実績から保有の合理性を検証しています。株式数の増加は、持株会参加に伴うもの及び更なる事業関係強化を目的とする取得によるものです。","reciprocal":"有","pct_outstanding":0.5553211640594617,"pct_unavailable":null,"pct_basis_period_end":"2025-12-31","pct_share_classes":1,"pct_of_holder_equity":2.6401862274213985,"pct_of_holder_assets":1.8300279814546272,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33937000000,"holder_total_assets_yen":48961000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱りそなホールディングス","held_name_en":"Resona Holdings, Inc.","held_sec_code":"8308","match_status":"matched","shares":251100,"book_value_yen":432000000,"prior_shares":251100,"prior_book_value_yen":323000000,"purpose_ja":"金融取引の円滑化のために保有しています。同社とは、資金調達をはじめとした総合的な取引や、金融情勢、経済環境等の情報交換を通じて、中長期的な企業価値の向上を目指し連携しています。取引先・投資先としての実績から保有の合理性を検証しています。","reciprocal":"有","pct_outstanding":0.011100595209140664,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.2729469310781742,"pct_of_holder_assets":0.8823349196299095,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33937000000,"holder_total_assets_yen":48961000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱武蔵野銀行","held_name_en":"The Musashino Bank, Ltd.","held_sec_code":"8336","match_status":"matched","shares":180000,"book_value_yen":374000000,"prior_shares":60000,"prior_book_value_yen":195000000,"purpose_ja":"金融取引の円滑化のために保有しています。地元金融機関である同行とは、地元の経済環境等の情報交換を通じて、中長期的な企業価値の向上や地元との関係強化に連携しています。取引先・投資先としての実績から保有の合理性を検証しています。株式分割のため株式数が増加しています。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":"holding restated onto a share base the issuer has not filed yet","pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.1020420190352713,"pct_of_holder_assets":0.7638732869018198,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33937000000,"holder_total_assets_yen":48961000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":["share split"],"note_refs":[],"share_ratio":3.0,"reclassified_to_pure":false},{"holder_table":"reporting","held_name_raw":"㈱CGSホールディングス","held_name_en":"CGS HOLDINGS INC.","held_sec_code":"6633","match_status":"matched","shares":322000,"book_value_yen":102000000,"prior_shares":210100,"prior_book_value_yen":65000000,"purpose_ja":"当社事業における取引維持・強化のために保有しています。同社とは、同社の提供するシステムにより業務の効率化を推進しています。取引先・投資先としての実績から保有の合理性を検証しています。株式数の増加は、更なる事業関係強化を目的とする取得によるものです。","reciprocal":"有","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":0.3005569142823467,"pct_of_holder_assets":0.20832907824595087,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":33937000000,"holder_total_assets_yen":48961000000,"implausible":false,"reciprocal_held_both_ways":true,"corporate_actions":[],"note_refs":[],"share_ratio":null,"reclassified_to_pure":false}],"holders":[{"holder_name":"シチズン時計株式会社","holder_name_en":"Citizen Watch Co., Ltd.","holder_sec_code":"7762","doc_id":"S100YGYK","period_end":"2026-03-31","holder_table":"reporting","shares":597181,"book_value_yen":2090000000,"prior_shares":597181,"prior_book_value_yen":2218000000,"purpose_ja":"同社株式は、当社時計事業セグメントの事業活動の円滑化の為保有しております。同社とはCITIZEN商標の使用許諾提携を行っております。保有株式は資本コストを踏まえ、配当・取引額に加え、中長期的な取引関係の維持・強化、当社業務の円滑な運営、また、事業発展に貢献するものであると総合的に判断し保有しております。定量的な保有効果につきましては取引先との営業秘密との判断により記載しておりませんが、上記方針に基づいた十分な定量的効果があると判断しております。","reciprocal":"有","pct_outstanding":7.371428239911826,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.6917506255543935,"pct_of_holder_assets":0.44629225095717945,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":302132000000,"holder_total_assets_yen":468303000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社武蔵野銀行","holder_name_en":"The Musashino Bank, Ltd.","holder_sec_code":"8336","doc_id":"S100YDFO","period_end":"2026-03-31","holder_table":"reporting","shares":217161,"book_value_yen":760000000,"prior_shares":217161,"prior_book_value_yen":806000000,"purpose_ja":"当行の主要な営業地域である埼玉県に本社を置く時計・精密部品等の製造・販売を行う企業で、同社との総合的な銀行取引関係の維持・強化を図るため保有しております。","reciprocal":"有","pct_outstanding":2.680572101268279,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.270947639368692,"pct_of_holder_assets":0.013454473160893016,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":280497000000,"holder_total_assets_yen":5648679000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社タムロン","holder_name_en":"Tamron Co.,Ltd.","holder_sec_code":"7740","doc_id":"S100XUB4","period_end":"2025-12-31","holder_table":"reporting","shares":167700,"book_value_yen":661000000,"prior_shares":null,"prior_book_value_yen":null,"purpose_ja":"同社株式は写真関連事業における今後の取引関係の強化を目的として新たに保有しております。定量的な保有効果につきましては秘密保持の観点により記載しておりませんが、定期的な保有適否の検証に基づき、十分に定量的な保有効果があると判断しております。","reciprocal":"有","pct_outstanding":2.07003993066292,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.7694008916203978,"pct_of_holder_assets":0.6233144107274202,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":85911000000,"holder_total_assets_yen":106046000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社ＣＧＳホールディングス","holder_name_en":"CGS HOLDINGS INC.","holder_sec_code":"6633","doc_id":"S100XRYC","period_end":"2025-12-31","holder_table":"reporting","shares":86800,"book_value_yen":342426000,"prior_shares":61400,"prior_book_value_yen":252047000,"purpose_ja":"当社ソフトウェアの評価ならびにアセアン地域における情報交換のため。なお事業上の関係を勘案し、同社との関係をより一層強化していくために株式購入しております。","reciprocal":"有","pct_outstanding":1.0714339056740696,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":9.753892430483157,"pct_of_holder_assets":4.8124090012198755,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":3510660000,"holder_total_assets_yen":7115480000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"新光商事株式会社","holder_name_en":"Shinko Shoji Co., Ltd.","holder_sec_code":"8141","doc_id":"S100YME7","period_end":"2026-03-31","holder_table":"reporting","shares":11204,"book_value_yen":39000000,"prior_shares":11204,"prior_book_value_yen":41000000,"purpose_ja":"(保有目的)主に安定的な営業取引により協力関係・取引関係の維持及び株式保有による収益獲得を通じた企業成長を通して中長期的に当社の企業価値を向上させるとの視点に立ち、株式を保有しています。(定量的な保有効果)(注)１","reciprocal":"無","pct_outstanding":0.13829891105037184,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07284137390037541,"pct_of_holder_assets":0.04826971632259023,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":53541000000,"holder_total_assets_yen":80796000000,"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）定量的な保有効果は記載が困難です。"}],"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":843000000,"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":5836000000,"listed_yen":5084000000,"unlisted_yen":752000000,"listed_issues":6,"unlisted_issues":9,"equity_yen":33937000000,"equity_basis":"jgaap_consolidated","total_assets_yen":48961000000,"assets_basis":"jgaap_consolidated","pct_of_equity":17.196570115213483,"pct_of_assets":11.919691182778129,"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":5084000000,"issue_count":6,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":752000000,"issue_count":9,"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":2066000000,"equity_yen":27006000000,"equity_basis":"jgaap_consolidated","pct_of_equity":7.650151818114493,"pct_of_assets":5.3952419502258895},{"year":"2023","period_end":"2023-03-31","policy_total_yen":2585000000,"equity_yen":28873000000,"equity_basis":"jgaap_consolidated","pct_of_equity":8.95300107366744,"pct_of_assets":6.505108460415723},{"year":"2024","period_end":"2024-03-31","policy_total_yen":3333000000,"equity_yen":31145000000,"equity_basis":"jgaap_consolidated","pct_of_equity":10.70155723230053,"pct_of_assets":7.649232322768687},{"year":"2025","period_end":"2025-03-31","policy_total_yen":3440000000,"equity_yen":31308000000,"equity_basis":"jgaap_consolidated","pct_of_equity":10.987607001405392,"pct_of_assets":7.628678508859468},{"year":"2026","period_end":"2026-03-31","policy_total_yen":5836000000,"equity_yen":33937000000,"equity_basis":"jgaap_consolidated","pct_of_equity":17.196570115213483,"pct_of_assets":11.919691182778129}],"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":11,"book_value_yen":1308000000},{"year":"2023","period_end":"2023-03-31","named_holdings":11,"book_value_yen":1829000000},{"year":"2024","period_end":"2024-03-31","named_holdings":11,"book_value_yen":2575000000},{"year":"2025","period_end":"2025-03-31","named_holdings":11,"book_value_yen":2685000000},{"year":"2026","period_end":"2026-03-31","named_holdings":6,"book_value_yen":5081000000}],"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."}}