The disclosure record of 3,800+ Japanese companies, connected to your AI.

Activist stakes, buybacks, shareholder registers, ten years of financials: every report they file with the regulator, structured in English. One question answers across the whole market, and every number links back to its filing.

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Connected to japan-finsight
Which companies has the Murakami group built 5%+ stakes in?
run_sql
City Index Eleventh, a Murakami-group vehicle, has filed 5%+ reports on 56 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 52 more, including Pacific Metals 5541 at a 10.2% peak.
From EDINET large-shareholding disclosures, 2021 to 2026. The complete count, not a sample; 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 clear it, across the whole market at once. Including:
  • ANYCOLOR 5032 · 57.6% ROE · sales +30% · buyback Mar 2026
  • RAKUS 3923 · 55.4% ROE · sales +23% · buyback Apr 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
86 of them have an earnings date inside 30 days. Next up:
  • Trend Micro 4704 · August 13
  • ASICS 7936 · 39.1% ROE · August 14
  • RAKUS 3923 · 55.4% ROE · August 14
The screen joined to the JPX earnings calendar. As of Aug 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 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, back to fiscal 2018, holder names normalized across spellings. 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.
390,000+
Rows in the top-10 shareholder registers. Every listed company, back to fiscal 2018, with each year's entries and exits.
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. Annual reports and every top-10 shareholder register back to fiscal 2018. Some filing types are kept here after EDINET itself stops serving them.

A worked example

Mitsui Matsushima announced an acquisition in July 2026 with the price undisclosed. Its regulatory filing, submitted the same day, states the terms. The same AI, asked the same question, with and without the record:

With web search

Finds the July 22 acquisition of Sanyo through news coverage. Reports the price as undisclosed under a confidentiality agreement, and warns that any figure circulating is an outside estimate.

Careful, honest, and stuck at what the press release said.

Connected to Japan Finsight

Reads the material-event filing submitted the same day. States the terms line by line: ¥9,384M for the shares, ¥65M in due diligence costs, ¥9,449M total, with the target's net cash noted in the filing.

¥9,384M for the shares, filed the same day.

Web search reads the news. This reads the record. And EDINET stops serving filings after statutory windows: what you didn't save is gone. This archive saved it.

How a Japanese filing becomes an English answer you can check.

The path from a document filed with the regulator to a sourced number in your AI.

01
Signals

What a filing states, extracted into a typed field.

Stakes and stated intent in the filer's own words, capital policy payout targets, material events tagged by rule, related-party terms with the source quote, cross-shareholdings, and the top-10 register of every listed company back to fiscal 2018 with each year's entries and exits.

Extracted from filings, never inferred: an unstated payout target comes back "not stated," and a value that can't be verified against its filing stays blank.

02
Screens

One query runs against every row, not the documents you thought to fetch.

Filing types that never share a database here sit in one, so a buyback, a 5%+ stake, and a balance sheet join in a single question. That is why answers come back with the full count across all 3,800+ listed companies.

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

The archive keeps serving after EDINET stops.

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.

Annual securities reports and their registers since 2018, quarterly reports through the 2024 reform, semi-annual reports, 5%+ shareholder disclosures since 2021, tender offers since 2020, extraordinary reports since 2024, treasury-stock acquisitions since 2025, shelf registrations, and internal-control reports. Every window is stated, per filing type, on the coverage page.

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.

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: anyone can read exactly how each value is pulled, or run it themselves. Japan Finsight runs the same code, and adds the extracted signals on top: activist intent, capital policy, tagged events, cross-shareholdings.

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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