Activist Investor Watchlist

We track 27 activist investors with confirmed engagement in Japanese listed companies—investment, shareholder proposals, open letters, and other activity confirmed from public disclosures. See each investor's large shareholding filing history, ownership stake over time, and key holdings, with direct links into each target company's financials, share price, ROE, and cost of equity (DCF and Comps analysis are also available, though DCF is a paid add-on and Comps requires a few extra steps).

  • Sorted alphabetically by English name.
  • Coverage is manually curated and does not include every entity that files large shareholding reports. Data is updated daily from large shareholding and change reports. For the activists listed here we cover filings from 2021-09-09 onward (the past five years); filings before that date are not included.
  • "Companies tracked" is a mechanical count of filings this filer submitted to EDINET within our coverage period, not the total number of Japanese companies this investor has ever held. "Latest filing" is the EDINET submission date, not the date the underlying trade or shareholder proposal actually occurred (change reports are generally filed within 5 business days of the triggering event, so the two dates do not match).

beluuga.ai's Activist Watchlist organizes activist investors (also known in Japan as "vocal shareholders", 物言う株主) engaged with Japanese listed companies — their target holdings, ownership stake, large shareholding filings, shareholder proposals, and other public disclosures.

Other frequent large shareholding filers (not activists)

Investors that are not activists but file large shareholding and change reports at high frequency. Listed separately and not counted in the activist figures above. Only filings in our daily records are included (not the five-year backfill applied to the activists); the earliest filing on record is shown on each page.

FAQ

Where can I find a list of activist investors in Japan?

beluuga.ai tracks 27 activist investors with confirmed engagement (investment, shareholder proposals, open letters, etc.) in Japanese listed companies from public disclosures, compiled daily from large shareholding and change reports. Examples include 3D Investment Partners Pte. Ltd., Ariake Capital, Inc., Asset Value Investors Limited, Axium Capital Pte. Ltd., Capital Gallery, Inc.. Each investor page shows target companies, ownership stake over time, and filing history.

How is this activist investor list compiled?

We mechanically aggregate publicly filed large shareholding and change reports and link them to a manually curated list of activist investors. This does not cover every entity that files large shareholding reports.

Are "activist investors" and "vocal shareholders" (物言う株主) the same thing?

In Japan, "vocal shareholders" (物言う株主) is a common colloquial term for activist investors — investors who engage with company management through shareholder proposals, open letters, or other public activity, rather than staying passive. beluuga.ai uses "activist investor" and "物言う株主" interchangeably to refer to the same set of tracked investors.

Can I see which Japanese stocks an activist investor holds?

Yes. See our holdings page for a list of confirmed target holdings across all tracked activist investors, or each investor's own page for their full holdings and filing history.

How do you determine an activist investor's current holdings?

We use each investor's most recently filed large shareholding or change report with EDINET as of our last update. This reflects the latest confirmed status per public filing, not necessarily the current real-time holding — once a stake drops to 5% or below, further changes may no longer be observable via EDINET.

What is a large shareholding report?

Under Japan's Financial Instruments and Exchange Act, an investor who acquires more than 5% of a listed company's shares must file a large shareholding report with EDINET, and a change report for every 1-point-or-more move thereafter. beluuga.ai aggregates these filings to build each activist investor's holdings and history.