Latest Activist Investor Filings

The most recent large shareholding and change reports filed by tracked activist investors, sorted by EDINET submission date (not the date the underlying trade or proposal actually occurred).

Most recent filing shown: 2026-10-23

FiledActivistTarget companyReport typeStake (before → after)Purpose
2026-10-23Strategic Capital, Inc.Orient Corporation8585Correction Report—→——
2026-10-23Effissimo Capital Management Pte. Ltd.KANTO DENKA KOGYO CO.,LTD.4047Change Report19.83%→19.83%Investment and advice to management and conducting material proposals (acts of making important proposals) and other acts, depending on circumstances. For the purpose of enhancing medium- to long-term corporate value, the filer conducts engagement (constructive dialogue) and may make proposals to the issuer regarding pursuit of optimal capital structure, optimization of the balance sheet, changes to the number of directors and attribute composition ratios of directors, etc.
2026-10-23Strategic Capital, Inc.Orient Corporation8585Correction Report—→——
2026-10-23Strategic Capital, Inc.Orient Corporation8585Correction Report—→——
2026-10-23VARECS Partners LimitedAUCNET INC.3964Change Report7.01%→5.88%Pure investment (customer asset management under discretionary investment management agreements and other contracts)
2026-10-22Strategic Capital, Inc.Wakita & Co.,LTD.8125Correction Report—→——
2026-10-22Symphony Financial Partners (Singapore) Pte. Ltd.Japan Securities Finance Co.,Ltd.8511Change Report21.02%→19.95%Pure investment; depending on circumstances, may make material proposals.
2026-10-22Symphony Financial Partners (Singapore) Pte. Ltd.KOMATSU MATERE Co.,Ltd.3580Change Report11.82%→10.62%Pure investment; depending on circumstances, may make material proposals.
2026-10-22UGS Asset Management, Inc.MITANI SANGYO CO.,LTD.8285Large Shareholding Report—→5.02%Pure investment and material proposal acts, etc. For the purpose of early achievement of a PBR of 1x by the issuer and medium-to-long-term enhancement of corporate value, intends to engage in constructive dialogue with management regarding improvement of capital efficiency and shareholder return policy. Material proposal acts are currently undecided but may be made depending on circumstances. Also, if the market price is judged undervalued, plans to make additional acquisitions exceeding 5% of total issued shares within the next three months.
2026-10-22ValueAct Capital Management, L.P.TAKARA HOLDINGS INC.2531Change Report(joint)12.47%→12.47%Held for the long term with the aim of realizing value through improvement of corporate governance and capital allocation, as the issuer's shares are considered undervalued relative to their intrinsic value. Has requested convocation of an extraordinary general meeting of shareholders under Article 297, Paragraph 1 of the Companies Act, and plans to propose the dismissal of three directors and the election of three directors. Does not seek acquisition of control or a share buyback by the issuer.
2026-10-22TriVista Capital, Inc.Harmonic Drive Systems Inc.6324Large Shareholding Report—→5.29%Pure investment based on discretionary investment management agreements
2026-10-22Former Murakami Fund group (City Index Eleventh, Reno, Minamiaoyama Real Estate)Nippon Paper Industries Co.,Ltd.3863Change Report(joint)5.83%→5.83%Advice and proposals regarding capital policy (increase in dividends and acquisition of treasury shares) and corporate governance, etc., contributing to enhancement of shareholder value. Also proposes transfer and acquisition of businesses and assets (industry consolidation) and taking the issuer private (including MBO). In addition, if the share price is judged to be undervalued, there is a possibility of acquiring more than 5% additional shares within the next three months.
2026-10-22Former Murakami Fund group (City Index Eleventh, Reno, Minamiaoyama Real Estate)TV Asahi Holdings Corporation9409Large Shareholding Report(joint)—→5.06%Advice and proposals on capital policy and corporate governance, etc., that contribute to enhancing shareholder value (changes to capital policy [dividend increases and share buybacks], transfer of businesses and assets that do not contribute to enhancing shareholder value, delisting of shares [including MBO]). If the issuer's share price is determined to be undervalued, there is a possibility of making additional acquisitions that would increase the shareholding ratio by more than 5% within the next three months, and depending on share price trends, there is also a possibility of selling shares.
2026-10-21Effissimo Capital Management Pte. Ltd.Tamron Co.,Ltd.7740Change Report18.54%→18.90%Pure investment (however, 32,272,900 shares of these are held for customer asset management based on discretionary investment contracts). There is no specific plan to increase the shareholding ratio by more than 5%, but depending on price and liquidity trends of the issuer's shares, the issuer's business condition, and the presence and status of acquisition proposals including the proposal from Sony Group Corporation, it may increase the shareholding ratio by more than 5%.
2026-10-21Dalton Investments, Inc.MEISEI INDUSTRIAL Co.,Ltd.1976Change Report0.16%→0.16%Investment and provision of management advice to management, and material proposal activities (acts of making important proposals) as circumstances warrant. On April 14, 2026, implemented shareholder proposals consisting of three agenda items: acquisition of treasury shares, amendment of the articles of incorporation regarding the number of outside directors, and amendment of the articles of incorporation regarding the record date for the ordinary general meeting of shareholders. Also, in December 2025, sent letters to investee companies including the issuer, proposing management conscious of cost of capital and share price, ensuring board independence, and examination of management strategy options including going private and spin-offs.
2026-10-21Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Correction Report—→——
2026-10-21Symphony Financial Partners (Singapore) Pte. Ltd.NISHIO HOLDINGS CO.,LTD.9699Change Report12.33%→10.95%Pure investment; depending on circumstances, may make material proposals.
2026-10-21Symphony Financial Partners (Singapore) Pte. Ltd.NAGAWA CO.,Ltd9663Change Report14.87%→13.83%Pure investment; depending on circumstances, may make material proposals.
2026-10-21Oasis Management Company Ltd.AEON Financial Service Co.,Ltd.8570Change Report10.80%→11.82%In addition to pure investment purpose, dialogue is conducted with the Issuer on matters related to the Issuer's medium- to long-term corporate value (capital structure, corporate governance, investment, data utilization, etc.). Proposals are planned to be made within the next 12 months regarding disposal of material assets, election or dismissal of representative directors, changes in board composition, material changes to dividend policy, delisting, etc. Additional acquisition exceeding 5% (acquisition exceeding 5%) is also planned through transactions both on and off the market.
2026-10-21Nippon Active Value Fund PLC (NAVF)MEISEI INDUSTRIAL Co.,Ltd.1976Change Report(joint)8.39%→8.39%Investment and provision of management advice to management, and material proposal activities (acts of making important proposals) as circumstances warrant. On April 14, 2026, implemented shareholder proposals consisting of three agenda items: acquisition of treasury shares, amendment of the articles of incorporation regarding the number of outside directors, and amendment of the articles of incorporation regarding the record date for the ordinary general meeting of shareholders. Also, in December 2025, sent letters to investee companies including the issuer, proposing management conscious of cost of capital and share price, ensuring board independence, and examination of management strategy options including going private and spin-offs.
2026-10-20Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Correction Report—→——
2026-10-20Ariake Capital, Inc.Tokyo Kiraboshi Financial Group,Inc.7173Change Report9.00%→10.09%Pure investment (for the purpose of management based on discretionary investment agreements) as the basic policy. The aim is to obtain investment returns through enhancement of the issuer's medium- to long-term corporate value, and to engage in constructive dialogue with management and provide advice as necessary.
2026-10-20Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Correction Report—→——
2026-10-19Ariake Capital, Inc.The Ehime Bank,Ltd.8541Large Shareholding Report—→5.19%Pure investment as the basic policy. Regarding the business integration with Iyogin Holdings, Inc., with which the issuer has reached a basic agreement, the filer is engaging in constructive dialogue and providing advice to management on integration terms, growth strategy, capital policy, and related matters, from the perspective of enhancing corporate value and securing the common interests of shareholders.
2026-10-19Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Correction Report—→——
2026-10-19Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Correction Report—→——
2026-10-19SilverCape Investments LimitedYOKOWO CO.,LTD.6800Large Shareholding Report—→5.10%For the purpose of enhancing corporate value and shareholder value of the issuer, and taking into account financial condition, share price level, other investment opportunities, stock market and economic conditions, may undertake material proposal acts (acts of making important proposals), including election of directors, changes in board composition, share exchanges, share transfers and share delivery, company splits and mergers, business transfers, changes to dividend policy, and material changes to capital policy.
2026-10-19Former Murakami Fund group (City Index Eleventh, Reno, Minamiaoyama Real Estate)YAMADA HOLDINGS CO.,LTD.9831Change Report(joint)5.75%→6.78%Advice and proposals on capital policy (dividend increases and share buybacks) and corporate governance, etc., that contribute to enhancing shareholder value. Proposals regarding the transfer and acquisition of businesses and assets and the delisting of shares (including MBO) are also being made through dialogue with the issuer.
2026-10-16Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-16Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Change Report16.72%→17.83%For the purpose of enhancing shareholder value, engaging in constructive dialogue with the issuer and making material proposals to the issuer, and pure investment. As material proposals, making a material proposal regarding a significant change to capital policy (improving the capital structure through the utilization of interest-bearing debt and the suppression of shareholders' equity).
2026-10-16Strategic Capital, Inc.A&D HOLON Holdings Company,Limited7745Correction Report—→——
2026-10-15Dalton Investments, Inc.MACNICA HOLDINGS,INC.3132Change Report9.18%→8.14%Acquired and holds shares long-term on the view that the issuer's shares are undervalued. May take measures such as additional acquisitions or sales depending on financial condition, strategic decisions, share price levels, and other factors. Based on a letter sent in December 2025, intends to continue constructive dialogue with the issuer on matters including management conscious of cost of capital and share price, ensuring board independence, and reviewing management strategy options including going private and spin-offs.
2026-10-15Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-15Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-15Symphony Financial Partners (Singapore) Pte. Ltd.Denyo Co.,Ltd.6517Change Report12.60%→11.47%Pure investment; depending on circumstances, may make material proposals.
2026-10-15Symphony Financial Partners (Singapore) Pte. Ltd.KOMATSU MATERE Co.,Ltd.3580Change Report12.93%→11.82%Pure investment; depending on circumstances, may make material proposals.
2026-10-15Symphony Financial Partners (Singapore) Pte. Ltd.Japan Securities Finance Co.,Ltd.8511Change Report22.23%→21.02%Pure investment; depending on circumstances, may make material proposals.
2026-10-15Oasis Management Company Ltd.TAKARA HOLDINGS INC.2531Large Shareholding Report—→5.09%For the purpose of improving the issuer's medium- to long-term corporate value (capital allocation policy, correction of corporate governance), engaging in dialogue with the issuer. Has made proposals regarding Article 14-8-2, Paragraph 1, Item 7 of the Cabinet Order (transfer of part of business), and plans similar proposals within the next 12 months. As of the date the reporting obligation arises, plans additional acquisition exceeding 5% as portfolio investment (subject to conditions such as market price).
2026-10-15Oasis Management Company Ltd.Infomart Corporation2492Change Report23.61%→24.70%For the purpose of improving the issuer's medium- to long-term corporate value and improving corporate governance, continuing dialogue with the issuer on growth strategy, AI and data utilization, pricing strategy, product portfolio, etc. Has made proposals regarding disposal of material assets, election of officers, changes in officer composition, partial discontinuation of business, etc. Plans to make proposals within the next 12 months regarding selection and dismissal of representative director, absorption-type merger, delisting, matters relating to large shareholding, etc.
2026-10-15Oasis Management Company Ltd.NIDEC CORPORATION6594Change Report7.97%→9.00%Held exclusively for the purpose of gains from changes in share value or dividend income. Material proposal acts concerning election of directors, changes in board composition, delisting, material changes in capital policy, and other matters have been carried out or are planned, and additional material proposal acts and additional acquisition of more than 5% through market transactions both on and off the market are planned within the next 12 months.
2026-10-14Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-14Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-14Asset Value Investors LimitedFoster Electric Company,Limited6794Change Report8.21%→9.31%Pure investment. If the filer determines it necessary for the issuer's sustainable enhancement of corporate value, the filer may engage in material proposal acts, etc., including disposal of significant assets, election, dismissal, and changes to the composition of directors, business transfers, etc., changes to dividend policy, and changes to capital policy.
2026-10-14Oasis Management Company Ltd.SHIBAURA MACHINE CO.,LTD.6104Change Report10.14%→11.27%The filer is engaged in dialogue on the Issuer's corporate governance and related matters. The filer plans to make proposals to management within the next 12 months regarding medium- to long-term corporate value enhancement through correction of material defects. The filer also plans, as part of portfolio investment, to make additional acquisitions that increase its shareholding ratio by more than 5% through on-market and off-market transactions, targeted within three months from the date the reporting obligation arises (subject to possible postponement depending on conditions).
2026-10-13Dalton Investments, Inc.IWAKI CO.,LTD.6237Large Shareholding Report—→5.02%The issuer's shares are considered undervalued; held for the long term. Additional purchases or sales may be made depending on financial condition, share price levels, etc. On April 17, 2026, submitted shareholder proposals concerning appropriation of retained earnings and a change to the record date. In December 2025, sent letters to investees including the issuer, proposing management conscious of cost of capital and share price, introduction of restricted stock compensation, securing board independence, and examination of management strategy options including going private and spin-off. Intends to continue dialogue going forward.
2026-10-13Strategic Capital, Inc.GungHo Online Entertainment,Inc.3765Change Report13.67%→13.67%For the purpose of enhancing shareholder value, engaging in constructive dialogue with the issuer and making material proposals to the issuer, and pure investment. As material proposals, making proposals regarding a significant change to capital policy (utilization of interest-bearing debt and suppression of shareholders' equity, acquisition of treasury shares from a specific shareholder, and disposal to Sony Music Entertainment (Japan) Inc.), delisting (acquisition by a third party), and an increase in dividends, and proposing, in the event the company remains listed, the dismissal of the Representative Director or the retirement of Chairman MORISHITA as a director. In addition, the filer will propose in October 2026 that the year-end dividend for each fiscal year from the fiscal year ending December 2026 through the fiscal year ending December 2030 be set at 200 yen per share, and will submit a shareholder proposal in January to February 2027 for the fiscal year ending December 2026.
2026-10-13Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-13Dalton Investments, Inc.Bunka Shutter Co.,Ltd.5930Change Report13.90%→13.90%Investment and provision of management advice and material proposal acts. On October 5, 2026, sent and published a letter proposing to the issuer a share buyback equivalent to 5% of total issued shares and disposal of the acquired shares as restricted stock compensation for employees. In December 2025, sent and published letters proposing management conscious of cost of capital and share price, securing board independence, and examination of management strategy options, including going-private and spin-off.
2026-10-13Strategic Capital, Inc.SANYO DENKI CO.,LTD.6516Correction Report—→——
2026-10-13Strategic Capital, Inc.YODOKO,Ltd.5451Correction Report—→——

Dates reflect EDINET submission dates, not the date the underlying trade or shareholder proposal actually occurred (change reports are generally filed within 5 business days of the triggering event). Source: public filings, aggregated daily.