GP-Act III Acquisition GPAT Institutional Ownership

Ownership Summary

GP-Act III Acquisition Corp. (NASDAQ:GPAT) is held by 52 institutional investors per 13F filings through March 2026.

• These investors held 93.9% of outstanding shares in March 2026, down from 106.2% in December 2025.
• Their total shares held in GPAT decreased -9.47% quarter over quarter, and separately, investors owning GP-Act III Acquisition increased 26.83% from a year ago.
• During the quarter, 12 of these 52 funds increased positions in GPAT, 21 reduced exposure, and 19 held steady.
• Altogether, these fund groups held 27.01Mn shares in GPAT by March 2026, down by 2.82Mn shares quarter on quarter, and down 2.21Mn shares year over year.
• As of March 31, 2026, the biggest holder of GP-Act III Acquisition is Karpus Management, Inc. at 2.23Mn shares, representing 7.76% of shares outstanding.
• Leading buyers of GP-Act III Acquisition shares for the quarter ending March 2026 were 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).
• The biggest sellers of GP-Act III Acquisition for the quarter ending March 2026 included 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 March 2026 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.