GP-Act III Acquisition Corp. (GPAT) Institutional Ownership

Ownership Summary

GP-Act III Acquisition Corp. (NASDAQ:GPAT) showed up in the 13F filings of 52 institutional investors as of December 2025.

• Collectively, these holders controlled 84.6% of GP-Act III Acquisition's outstanding shares in December 2025, down from 88.3% in September 2025.
• They decreased total shares held in GPAT by -4.01% quarter over quarter, and investors in GP-Act III Acquisition increased 20.93% from a year ago.
• Among the 52 funds, 12 bought more GP-Act III Acquisition shares, 14 sold down, and 26 held their ground.
• Institutional investors collectively held 30.39Mn shares in GP-Act III Acquisition as of December 2025, down by 1.27Mn shares quarter on quarter, and down 4.54Mn shares year over year.
• Karpus Management, Inc. is the top holder of GP-Act III Acquisition as of December 31, 2025, with 2.23Mn shares representing 6.21% of outstanding stock.
• Top purchasers of GPAT stock for the quarter ending December 2025 included Jpmorgan Chase & Co (952.15K), Berkley W R Corp (534.53K), HIGHBRIDGE CAPITAL MANAGEMENT LLC (452.07K), O'Connor Alternative Investments LLC (250.0K), Toronto Dominion Bank (235.46K).
• Leading sellers of GP-Act III Acquisition shares for the quarter ending December 2025 were Alberta Investment Management Corp (1.62Mn), HGC Investment Management Inc. (1.38Mn), Westchester Capital Management, LLC (500.0K), PICTON MAHONEY ASSET MANAGEMENT (500.0K), COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS (358.36K).
• GP-Act III Acquisition's 10 largest shareholders as of December 2025 include Karpus Management, Inc. (2.23Mn), First Trust Capital Management L.P. (2.09Mn), Alberta Investment Management Corp (1.62Mn), AQR Arbitrage LLC (1.58Mn), D. E. Shaw & Co., Inc. (1.42Mn), PICTON MAHONEY ASSET MANAGEMENT (1.38Mn), MMCAP International Inc. SPC (1.27Mn), LMR Partners LLP (1.22Mn), Polar Asset Management Partners Inc. (1.17Mn), Wealthspring Capital LLC (1.01Mn) per Business Quant data.