Ask about any listed Japanese company. Answered from the filings, in English.

Connect Claude, ChatGPT, or any MCP client to nine types of EDINET filings from 3,800+ listed companies. Every number links to its source filing.

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Which companies has the Murakami group built 5%+ stakes in?
run_sql
City Index Eleventh, a Murakami-group vehicle, has filed 5%+ reports on 47 companies since 2021. Largest positions at peak ownership:
  • Japan Asia Group · holding company · 73.9%
  • Daiho Corporation 1822 · construction · 43.4%
  • Mitsui Matsushima 1518 · energy · 38.2%
  • Hoosiers 3284 · real estate · 37.5%
…and 43 more, including Pacific Metals 5541 at a 10.2% peak.
From EDINET large-shareholding disclosures, 2021 to 2026. Every holding links to its disclosure.
Trace City Index's Pacific Metals stake over time.
get_large_holder_timeline("5541")
Pacific Metals 5541. City Index Eleventh's position, rebuilt from its disclosures:
  • Nov 2021. Opens at 5.4%, runs to 8.2%, then trims back under 5%.
  • 2024. Rebuilds the position, around 5% to 9% across the year.
  • Nov 2024. Peaks at 10.2%.
  • Jun 2025. Exits completely, 10.2% to 0%.
From EDINET large-shareholding disclosures, 2021 to 2025.
How strong is Pacific Metals' balance sheet?
get_financials("5541")
A strong, near-debt-free balance sheet, carried through a deep down-cycle:
  • ¥63.2bn net assets against just ¥4.1bn of liabilities, essentially debt-free.
  • Book value ¥3,620 per share.
  • Four straight years of operating losses, but narrowing every year: −¥12.6bn in FY2023 to −¥5.0bn in FY Mar 2026.
From EDINET annual securities reports, as of Jul 2026.
Find Japanese companies with ROE over 15%, growing revenue, that are buying back stock.
run_sql
More than 250 companies match: ROE above 15%, revenue growing, and a buyback on file. Including:
  • RAKUS 3923 · 55.4% ROE · sales +23% · buyback Apr 2026
  • ANYCOLOR 5032 · 55.2% ROE · sales +34% · buyback Mar 2026
  • Lasertec 6920 · 46.9% ROE · sales +18% · buyback Jan 2026
  • ZOZO 3092 · 46.6% ROE · sales +7% · buyback Jul 2026
  • Sanrio 8136 · 41.6% ROE · sales +34% · buyback Mar 2026
One query, joining annual financials and buyback disclosures across every company. As of Jul 2026.
Has Sanrio actually been buying back its own stock?
get_buybacks("8136")
Yes. Sanrio lifted its treasury holding from 4.2% of shares in December 2025 to about 5.1% by January 2026, and its filings through March show it held there.
From Sanrio's treasury-stock buyback filings.
Which of those 250 report earnings in the next 30 days?
run_sql
187 of them have an earnings date inside 30 days. Next up:
  • OBIC 4684 · July 22
  • Japan Exchange Group 8697 · July 28
  • Advantest 6857 · 57.6% ROE · July 29
The screen joined to the JPX earnings calendar. As of Jul 2026.
What is Elliott pushing for at Nippon Express?
get_holding_actions("9147")
Elliott Management holds 6.1% of Nippon Express (9147) and is pushing it to:
  • Spin off and monetize the real estate, including sale-and-leaseback.
  • Launch a large-scale share buyback.
  • Adopt a new M&A and profit-improvement plan.
From Elliott's EDINET large-shareholding disclosure, filed May 20, 2026. Document S100Y53L.
Who's borrowing big from their own related parties?
run_sql
Current annual reports disclose 500+ related-party loans and guarantees. The largest:
  • Mizuho Leasing 8425 · ¥6.1tn borrowings from Mizuho Bank.
  • Mitsubishi HC Capital 8593 · ¥1.1tn short-term funding from MUFG Bank.
  • Nippon Steel 5401 · ¥474bn guarantee for AMNS Luxembourg Holding.
Each row keeps the filing's verbatim figure beside the parsed amount.
From related-party notes in current annual reports. As of Jul 2026.
Who moved in Pacific Metals' shareholder register this past year?
get_shareholder_register("5541", include_changes=True)
Comparing the FY Mar 2026 top-10 register to the year before, the year City Index exited its 5%+ stake:
  • Entered: Norway's sovereign wealth fund at 1.6%; a Bank of New York treaty account at 3.3%.
  • Gone from the top-10: Nippon Steel Stainless, previously an 8.4% strategic holder.
  • The Custody Bank of Japan trust account went 1.8% → 7.8%.
From the top-10 registers in annual securities reports, holder names normalized across spellings. As of Jul 2026.
How active is Japan's tender-offer market right now?
run_sql
308 tender offers were registered in 2025; 2026 is at 127 through mid-July. Recent registrations, each targeting full ownership:
  • Omron Healthcare → Matsuya R&D · May 2026
  • Culture Convenience Club → Jimoty · May 2026
  • Kinden → Kodensha · May 2026
From tender-offer registrations across the whole record. As of Jul 2026.
Ask about any listed company…
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3,800+
Listed companies on the record. Every name on TSE Prime, Standard, and Growth.
9
Types of filings in the record. From annual reports to 5%+ stakes, buybacks, and tender offers.
90,000+
Every 5%+ stake on the record. Activist or passive, joint filers untangled, each linked to its source.
2018
How far back the record reaches. Including filings EDINET itself no longer serves.

Japanese companies are buying back stock, unwinding cross-holdings, and drawing more activist filings.

It's all in the public record, and most of it never reaches you in English.

Most filings never make it into English. The 5%+ stakes, the buybacks, the tender offers, the register moves: filed in Japanese, and coverage rarely follows.
EDINET, Japan's official disclosure system, serves one document at a time. No screening across companies, no history across years. And filings come down after statutory windows: what you didn't save is gone.
A general model fills the gaps when it can't find the answer. On a Japanese filing you can't quickly check, that's not a number you'd act on.

Find the catalysts. Screen the whole market. Check every number.

01
Signals

Who's accumulating, what they want, how capital gets returned.

Activist intent What each filer wants, in its own words, flagged when it's a known activist.
Capital policy The payout target when stated, an honest “not stated” when it isn't.
Material events M&A, capital returns, management and governance changes, tagged and searchable.
Related-party transactions Counterparty, type, amount, and terms, with the source quote per item.
Cross-shareholdings 5%+ holders plus structural holdings from annual reports.
Ownership timelines Who entered, increased, or exited, when, and at what stake.
02
Screens

Screen all 3,800+ listed companies in one question.

Combine signals from different disclosures (a buyback, a 5%+ stake, a cheap multiple) into a single screen. Your AI queries the whole record directly and surfaces names you wouldn't have thought to look for.

your agent might write one query across three disclosure types:
SELECT DISTINCT s.ticker, s.roe
FROM securities_reports s                              -- annual report
JOIN treasury_stock_reports b ON b.edinet_code = s.edinet_code        -- buyback filing
JOIN large_holding_reports h ON h.target_edinet_code = s.edinet_code  -- 5%+ stake filing
WHERE s.roe > 0.15 AND h.is_known_activist_filer;
03
The record

Nine filing types, and exactly how far back each goes.

EDINET stops serving filings after statutory windows: about a year for buyback reports, a few years for the rest. This archive keeps what it has ingested.

EDINET disclosureWhat your AI gets backHistory
Annual securities reportsAudited financials, 60+ typed fields, segmentssince 2018
5%+ shareholder disclosuresHolder, stake %, joint filers untangled, stated intentsince 2021
Quarterly reportsHistorical financials, through the 2024 FSA reform2018–2024
Semi-annual reportsHalf-year resultssince 2021
Extraordinary reportsM&A, restructurings, governance, tagged by eventsince 2024
Treasury-stock acquisitionsBuyback size and executionsince 2025
Tender offersRegistration, target opinion, final resultsince 2020
Shelf registrationsIssuance plans before the raisesince 2024
Internal-control reportsJ-SOX statussince 2021

Japan Finsight is not a terminal. No live prices, no estimates, no news feed, and earnings releases (tanshin) are not ingested. This is what companies and their owners file.

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How it's built

Straight from EDINET, through open-source code.

The data comes from EDINET, the corporate disclosure system run by Japan's Financial Services Agency. Numbers are parsed from each filing's machine-readable XBRL data, not from an AI reading PDFs.

The parsing layer, edinet-tools, is open source: MIT-licensed, on PyPI for over two years. Anyone can read exactly how each value is pulled, or use the library themselves. Japan Finsight runs the same code. On top, it adds the extracted signals: activist intent, capital policy, tagged events, cross-shareholdings.

Financials are the group-wide consolidated figures, never parent-company-only. Every value source-linked to its disclosure. See how the data is built →

Built by Matt Helmer, ex-UBS Tokyo Market Risk.

Japan Finsight is an independent product. Not affiliated with the Financial Services Agency, EDINET, or any disclosed company.

edinet-tools Open-source library for EDINET · MIT · public on PyPI & GitHub edinet-tools total downloads on PyPI (live count) EDINET Japan's official corporate disclosure system · run by the Financial Services Agency

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  • The whole record All 3,800+ companies, nine types of filings, and read-only SQL across all of it.
  • The extracted signals Activist intent, capital policy, ownership over time, tagged events. Extracted and searchable.
  • In English, sourced Numbers, ownership, and stated intent come back in English, each linked to its filing.
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