--- title: "Japan large shareholding disclosure" aliases: - "Japan large shareholding disclosure" - "Japan 5 percent rule" - "大量保有報告制度" domain: "finance" created: 2026-05-22 last_updated: 2026-07-29 last_tended: 2026-07-29 review_by: 2027-01-29 confidence: likely tags: [finance, disclosure, FIEA, EDINET, large-shareholding, activism, Japan] status: active sources: - "https://www.fsa.go.jp/common/shinsei/tairyohoyu/summary/index.html" - "https://www.fsa.go.jp/common/shinsei/tairyohoyu/index.html" - "https://www.fsa.go.jp/en/laws_regulations/faq_on_fiea/section05.html" - "https://www.fsa.go.jp/en/refer/councils/stewardship/20250917/01.pdf" - "https://www.fsa.go.jp/singi/singi_kinyu/tosin/20231225.html" - "https://www.fsa.go.jp/access/r5/246.html" - "https://disclosure2.edinet-fsa.go.jp/week0010.aspx?media=53999" - "https://www.jpx.co.jp/equities/listing/disclosure/overview/" - "https://www.jpx.co.jp/equities/listing/disclosure/tdnet/index.html" --- # Japan large shareholding disclosure ## Overview Japan's large-shareholding disclosure regime is the FIEA "5% rule" for revealing block ownership, influence, and market-supply information. Once a holder's ratio exceeds 5%, a Large Shareholding Report is generally required within five business days. Later material changes, including a holding-ratio change of one percentage point or more, generally require a Change Report within five business days. Filings are made through EDINET. This page is written for the post-May-1-2026 amended regime. The FSA's submission page was updated on 2026-05-01 and states that the amended large-shareholding regime took effect that day, changing holding-ratio calculation, joint-holder scope, and forms. Use source dates carefully. Read this page with [[finance/japan-tender-offer-process|Japan tender offer process]], [[finance/japan-activist-investor-playbook|Japan activist investor playbook]], [[finance/cross-border-m-a-japan|cross-border M&A Japan]], [[securities/tokyo-stock-exchange|Tokyo Stock Exchange]], [[financial-regulators/japan-exchange-group|Japan Exchange Group]], [[megabanks/sbi-hd|SBI HD]], [[regional-banks/sbi-shinsei-bank|SBI Shinsei Bank]], and [[payment-firms/wealthnavi|WealthNavi]]. ## Regime Snapshot Source: the table records the FSA's [large-shareholding filing route updated for the May 1, 2026 regime](https://www.fsa.go.jp/common/shinsei/tairyohoyu/index.html); the amended forms and Q&A control in edge cases. | Topic | Rule of thumb | |---|---| | Trigger | Holding ratio of listed shares etc. exceeds 5%. | | Initial report | Large Shareholding Report, generally within five business days. | | Change report | Generally within five business days after a change of one percentage point or more or another material change. | | Filing surface | EDINET electronic submission; paper filing is not the ordinary route. | | Purpose | Transparency around management influence and market supply / demand. | | Post-2026 caution | Reforms effective 2026-05-01 changed calculation, joint-holder scope, and forms. | ## What It Is Not Large-shareholding disclosure is not a tender offer document. It discloses holder, holding ratio, purpose, joint-holder, and related block-ownership information, but it does not itself disclose an offer price, tender period, purchase conditions, funding proof, or target board opinion. Source: the table distinguishes the FSA's [large-shareholding filing route](https://www.fsa.go.jp/common/shinsei/tairyohoyu/index.html) from the FSA's [tender-offer disclosure regime](https://www.fsa.go.jp/news/r7/shouken/20250704/20250704.html) and [JPX TDnet](https://www.jpx.co.jp/equities/listing/disclosure/tdnet/index.html). | Filing | Public record field | |---|---| | Large Shareholding Report | Who crossed 5%, by what holding structure, with what purpose? | | Change Report | What changed after the latest report? | | Tender offer statement | What are the offer terms, funding, conditions, and post-TOB plan? | | TDnet disclosure | Listed-company event disseminated through timely disclosure. | [[finance/japan-tender-offer-process|Japan tender offer process]] and this page are separate but linked routes. ## Holder Analysis Under the post-2026 regime, public filings include holder-analysis fields such as: - direct ownership; - investment authority; - voting or instruction authority; - joint holders; - derivatives or equity-linked exposure where included by the amended rules; - purpose of holding; - important proposal acts; - pledge / borrowing / financing context where disclosed; - rapid accumulation or sale patterns. Aggregation is determined by the amended statutory holding-ratio and joint-holder definitions, not by an actor label alone. A fund, adviser, affiliate, derivative counterparty, or collaborating investor is included only when the legal rights, authority, agreement, or relationship satisfies the applicable rule. Use the current forms and FSA Q&A for the filing date, then record the filer, joint holders, purpose, and change history exactly as disclosed. ## Activism / Control Reading Large-shareholding filings are part of [[finance/japan-activist-investor-playbook|activist investor playbook]] pages. They can show entry timing, stake increases, joint-holder changes, purpose revisions, and whether the filer signals important proposal acts. Related public records include: - shareholder proposals; - AGM voting results; - public letters / campaign websites; - TDnet company responses; - TOB filings if any; - issuer governance reforms; - market-price and volume context. For bank, brokerage, insurance, and fintech entities, link relevant control cases back to [[finance/INDEX|finance INDEX]] pages only when the public source supports the entity-level relevance. ## EDINET Workflow 1. Search EDINET for the issuer and filer. 2. Pull the Large Shareholding Report and the latest Change Reports. 3. Check whether the report is ordinary report, short-form report, amendment, or correction. 4. Extract holder ratio, joint holders, purpose, important proposal acts, and collateral / financing disclosure where present. 5. Build a dated stake timeline. 6. Cross-check TDnet / listed-company disclosures for company response or related corporate action. 7. If a TOB exists, read the tender offer statement separately. ## Reading Checklist | Field | Why | |---|---| | Filer / holder | Identifies legal reporting person, not necessarily ultimate economic group. | | Joint holders | Determines aggregation and possible coordinated influence. | | Holding ratio | Core threshold and change-report basis. | | Purpose of holding | Distinguishes pure investment, policy investment, important proposal, control, or other aims. | | Acquisition funds / borrowing | Can reveal leverage, financing, and transaction intent. | | Recent transactions | Shows accumulation / disposal pace. | | Derivatives / contractual rights | Important after reform and for hidden exposure analysis. | | Amendment history | Corrects earlier filings and may change interpretation. | ## Related - [[finance/INDEX]] - [[finance/japan-tender-offer-process]] - [[finance/japan-activist-investor-playbook]] - [[finance/japan-mbo-and-squeeze-out-process]] - [[finance/cross-border-m-a-japan]] - [[securities/tokyo-stock-exchange]] - [[financial-regulators/japan-exchange-group]] - [[megabanks/sbi-hd]] - [[regional-banks/sbi-shinsei-bank]] - [[payment-firms/wealthnavi]] - [[INDEX|FinWiki index]] ## Sources - FSA: overview of the large-shareholding reporting system, dated 2026-04-24. - FSA: large-shareholding filing / EDINET submission page, updated 2026-05-01. - FSA: FIEA FAQ, Section 5. - FSA: Financial System Council working-group materials and Access FSA reform explainer. - EDINET viewer. - JPX: timely-disclosure overview and TDnet page.