GP-Act III Acquisition (GPATU) Institutional Ownership $10.99 0.00 (0.00%) As of 10/28/2026 Add Share Share Ownership Stock AnalysisChartOwnershipSEC Filings Institutional Ownership Changes (13F Filings) for GP-Act III Acquisition (NASDAQ:GPATU)Number ofInstitutional Buyers(last 12 months)1TotalInstitutional Inflows(last 12 months)$158.22KNumber ofInstitutional Sellers(last 12 months)0 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 TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. 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Skip Chart & View Institutional Buying and Selling Data GPATU Institutional Buying and Selling by Quarter GP-Act III Acquisition Major Shareholders & Ownership History ExportReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails11/17/2025Clear Street Group Inc.14,759$158K0.0%N/A0.000% 12/3/2024Rivernorth 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% GPATU Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of GPATU shares? During the previous two years, the following institutional investors and hedge funds held shares of GP-Act III Acquisition shares: Rivernorth Capital Management LLC ($181K), and Clear Street Group Inc. ($158K), Longfellow Investment Management Co. LLC ($80K).Learn more on GP-Act III Acquisition's institutional investors. Which institutional investors have been buying GP-Act III Acquisition's stock? The following institutional investors have purchased GP-Act III Acquisition's stock in the last 24 months: Clear Street Group Inc. ($14.76K), and Longfellow Investment Management Co. LLC ($7.80K). How much institutional buying is happening at GP-Act III Acquisition? Institutional investors have bought a total of 14,759 shares in the last 24 months. This purchase volume represents approximately $158.22K in transactions. Institutional ownership data for NASDAQ:GPATU is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 11/17/2025. New 13F filings are added each quarter as they're published. From Our PartnersFinancial legend: “This is bad, really bad...”Dr. Martin D. Weiss has publicly predicted six major American market crashes over his 55-year career, each war...Weiss Ratings | SponsoredThe "velvet rope" stock setups hiding from regular indicatorsK.I.R.A. is a new trading engine built to flag market setups before they show up on standard charts. Former...The TradingPub | SponsoredThe investigation Porter spent tens of thousands to documentPorter Stansberry flew the Porter and Co. team 3,300 miles to Dublin to investigate a 17-year investing experi...Porter & Company | SponsoredA free stock pick, from me to youElon's paid this chip supplier since 2012. When NVIDIA tried to buy the company, he fought the deal. 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