GP-Act III Acquisition (GPATU) Institutional Ownership $10.66 +0.07 (+0.66%) As of 09/12/2025 Add Compare Share Share Ownership Stock AnalysisChartCompetitorsOwnershipSEC FilingsTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for GP-Act III Acquisition (NASDAQ:GPATU)Number ofInstitutional Buyers(last 12 months)2TotalInstitutional Inflows(last 12 months)$18.89MNumber ofInstitutional Sellers(last 12 months)1TotalInstitutional Outflows(last 12 months)$8.84M Get GPATU Insider Trade Alerts Want to know when executives and insiders are buying or selling GP-Act III Acquisition stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. Skip Chart & View Institutional Buying and Selling Data GPATU Institutional Buying and Selling by Quarter GP-Act III Acquisition Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails12/3/2024Rivernorth Capital Management LLC17,748$181K0.0%-96.1%0.000% 11/15/2024Rivernorth Capital Management LLC17,748$181K0.0%-96.1%0.000% 11/13/2024Longfellow Investment Management Co. LLC7,800$80K0.0%N/A0.000% 9/20/2024Healthcare of Ontario Pension Plan Trust Fund1,875,000$18.81M0.1%N/A0.000% 8/15/2024CVI Holdings LLC460,000$4.61M4.2%N/A0.000% 8/15/2024Sea Otter Advisors LLC49,950$501K3.6%N/A0.000% 8/15/2024Shaolin Capital Management LLC100,000$1.00M0.0%N/A0.000% 8/15/2024Dryden Capital LLC300,000$3.01M5.1%N/A0.000% 8/14/2024Aristeia Capital L.L.C.500,000$5.02M0.1%N/A0.000% 8/14/2024Glazer Capital LLC275,100$2.76M0.2%N/A0.000% 8/14/2024Berkley W R Corp297,992$2.99M0.1%N/A0.000% 8/12/2024Clear Street LLC472,297$4.74M0.0%N/A0.000% 8/12/2024Highbridge Capital Management LLC10,000$100K0.0%N/A0.000% 8/8/2024Condor Capital Management19,500$196K0.0%N/A0.000% 8/7/2024Cowen AND Company LLC1,185,400$11.89M0.3%N/A0.000% 7/31/2024Picton Mahoney Asset Management1,875,000$18.81M0.7%N/A0.000% 7/29/2024TrueMark Investments LLC17,749$178K0.1%N/A0.000% (Data available from 1/1/2016 forward) GPATU Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of GPATU shares? During the previous two years, 16 institutional investors and hedge funds held shares of GP-Act III Acquisition. The most heavily invested institutionals were Picton Mahoney Asset Management ($18.81M), Healthcare of Ontario Pension Plan Trust Fund ($18.81M), Cowen AND Company LLC ($11.89M), Aristeia Capital L.L.C. ($5.02M), Clear Street LLC ($4.74M), CVI Holdings LLC ($4.61M), and Dryden Capital LLC ($3.01M).Learn more on GP-Act III Acquisition's institutional investors. Which institutional investors have been buying GP-Act III Acquisition's stock? Of the 15 institutional investors that purchased GP-Act III Acquisition's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Healthcare of Ontario Pension Plan Trust Fund ($1.88M), Picton Mahoney Asset Management ($1.88M), Cowen AND Company LLC ($1.19M), Aristeia Capital L.L.C. ($500K), Clear Street LLC ($472.30K), CVI Holdings LLC ($460K), and Dryden Capital LLC ($300K). How much institutional buying is happening at GP-Act III Acquisition? Institutional investors have bought a total of 1,882,800 shares in the last 24 months. This purchase volume represents approximately $18.89M in transactions. Which of GP-Act III Acquisition's major shareholders have been selling company stock? The following institutional investors have sold GP-Act III Acquisition stock in the last 24 months: Rivernorth Capital Management LLC ($866.90K). How much institutional selling is happening at GP-Act III Acquisition? Institutional investors have sold a total of 866,904 shares in the last 24 months. This volume of shares sold represents approximately $8.84M in transactions. 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