GP-Act III Acquisition Corp. - GPAT
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Karpus Management, Inc. | History | Reduced | 2,230,216 | 24,175 | 0.75% | 0.77% | 1 | -101,650 | -4.36% | Q1 2026 | May 14, 2026 |
| First Trust Capital Management L.P. | History | Added to | 2,301,077 | 22,667 | 1.19% | 1.35% | 2 | +210,000 | 10.04% | Q1 2026 | May 14, 2026 |
| Alberta Investment Management Corp | History | No change | 1,625,000 | 17,615 | 0.11% | 0.1% | 3 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| AQR Arbitrage LLC | History | Added to | 1,576,803 | 17,092 | 0.28% | 0.35% | 4 | +684 | 0.04% | Q1 2026 | May 15, 2026 |
| D. E. Shaw & Co., Inc. | History | No change | 1,423,125 | 15,426 | 0.01% | 0.01% | 5 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| PICTON MAHONEY ASSET MANAGEMENT | History | Reduced | 1,375,000 | 14,905 | 0.11% | 0.16% | 6 | -500,000 | -26.67% | Q1 2026 | May 13, 2026 |
| MMCAP International Inc. SPC | History | No change | 1,275,000 | 13,821 | 1.19% | 1.36% | 7 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| LMR Partners LLP | History | No change | 1,225,000 | 13,279 | 0.03% | 0.02% | 8 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Polar Asset Management Partners Inc. | History | No change | 1,174,996 | 12,736 | 0.25% | 0.16% | 9 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Wealthspring Capital LLC | History | Reduced | 1,006,939 | 10,915 | 2.59% | 2.57% | 10 | -11,343 | -1.11% | Q1 2026 | May 01, 2026 |
| Westchester Capital Management, LLC | History | Reduced | 860,852 | 9,331 | 0.42% | 0.61% | 11 | -500,000 | -36.74% | Q1 2026 | May 15, 2026 |
| BERKLEY W R CORP | History | Added to | 846,823 | 9,179 | 0.49% | 0.16% | 12 | +534,533 | 171.17% | Q1 2026 | May 15, 2026 |
| LINDEN ADVISORS LP | History | No change | 797,584 | 8,645 | 0.05% | 0.05% | 13 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | History | No change | 750,000 | 8,130 | 0.13% | 0.11% | 14 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | History | Reduced | 745,440 | 8,080 | 0.08% | 0.08% | 15 | -206,309 | -21.68% | Q1 2026 | May 04, 2026 |
| TORONTO DOMINION BANK | History | Added to | 635,465 | 6,888 | 0.01% | 0.01% | 16 | +235,465 | 58.87% | Q1 2026 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 625,000 | 6,775 | 0.01% | 0.01% | 17 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Radcliffe Capital Management, L.P. | History | Added to | 623,267 | 6,756 | 0.51% | 0.33% | 18 | +50,045 | 8.73% | Q1 2026 | May 15, 2026 |
| L1 Global Manager Pty Ltd | History | No change | 567,566 | 6,152 | 4.12% | 3.97% | 19 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| JPMORGAN CHASE & CO | History | Added to | 549,898 | 5,949 | 0.0% | 0.0% | 20 | +500,082 | 1003.86% | Q1 2026 | May 13, 2026 |
| ARISTEIA CAPITAL, L.L.C. | History | No change | 490,750 | 5,319 | 0.11% | 0.11% | 21 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | History | New | 452,072 | 4,891 | 0.16% | — | 22 | +452,072 | New | Q1 2026 | May 15, 2026 |
| HEIGHTS CAPITAL MANAGEMENT, INC | History | Reduced | 388,719 | 4,213 | 1.17% | 1.6% | 23 | -27,377 | -6.58% | Q1 2026 | May 15, 2026 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | History | Reduced | 360,013 | 3,902 | 0.2% | 0.21% | 24 | -60,098 | -14.31% | Q1 2026 | May 15, 2026 |
| METEORA CAPITAL, LLC | History | Reduced | 343,722 | 3,725 | 0.27% | 0.37% | 25 | -64,997 | -15.9% | Q1 2026 | May 15, 2026 |
| DEUTSCHE BANK AG\ | History | No change | 290,000 | 3,143 | 0.0% | 0.0% | 26 | 0 | 0.0% | Q1 2026 | May 06, 2026 |
| O'Connor Alternative Investments LLC | History | New | 250,000 | 2,710 | 0.23% | — | 28 | +250,000 | New | Q1 2026 | May 15, 2026 |
| PERISCOPE CAPITAL INC. | History | Reduced | 250,000 | 2,710 | 0.3% | 0.42% | 27 | -94,000 | -27.33% | Q1 2026 | May 13, 2026 |
| Jain Global LLC | History | Reduced | 249,980 | 2,709 | 0.01% | 0.01% | 29 | -20 | -0.01% | Q1 2026 | May 15, 2026 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | History | No change | 250,000 | 2,675 | 0.31% | 0.31% | 30 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| GLAZER CAPITAL, LLC | History | Reduced | 236,227 | 2,561 | 0.05% | 0.07% | 31 | -13,873 | -5.55% | Q1 2026 | May 14, 2026 |
| Verition Fund Management LLC | History | Reduced | 227,588 | 2,467 | 0.02% | 0.01% | 32 | -1,536 | -0.67% | Q1 2026 | May 15, 2026 |
| SONA ASSET MANAGEMENT (US) LLC | History | New | 200,000 | 2,168 | 0.05% | — | 34 | +200,000 | New | Q1 2026 | May 15, 2026 |
| MOORE CAPITAL MANAGEMENT, LP | History | No change | 200,000 | 2,168 | 0.04% | 0.03% | 33 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | No change | 137,739 | 1,493 | 0.0% | 0.0% | 35 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | No change | 80,000 | 867 | 0.0% | 0.0% | 36 | 0 | 0.0% | Q1 2026 | May 08, 2026 |
| Lineage Point Capital LP | History | No change | 65,000 | 704 | 0.17% | 0.26% | 37 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MIZUHO SECURITIES USA LLC | History | Reduced | 60,098 | 649 | 0.02% | 0.06% | 38 | -259,811 | -81.21% | Q1 2026 | May 11, 2026 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | History | Reduced | 53,900 | 584 | 0.0% | 0.02% | 39 | -358,364 | -86.93% | Q1 2026 | May 01, 2026 |
| Dakota Wealth Management | History | Reduced | 46,400 | 502 | 0.01% | 0.01% | 40 | -2,000 | -4.13% | Q1 2026 | May 07, 2026 |
| Kepos Capital LP | History | No change | 42,500 | 461 | 0.75% | 2.58% | 41 | 0 | 0.0% | Q1 2026 | May 12, 2026 |
| Clear Street Group Inc. | History | No change | 25,080 | 272 | 0.0% | 0.0% | 42 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| ROBINSON CAPITAL MANAGEMENT, LLC | History | No change | 22,250 | 240 | 0.1% | 0.1% | 43 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| Wellspring Financial Advisors, LLC | History | No change | 21,200 | 229 | 0.02% | 0.02% | 44 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 17,172 | 186 | 0.0% | 0.0% | 45 | +2,263 | 15.18% | Q1 2026 | May 15, 2026 |
| Cannon Global Investment Management, LLC | History | Added to | 16,700 | 181 | 0.35% | 0.39% | 46 | +2,200 | 15.17% | Q1 2026 | Apr 21, 2026 |
| TrueMark Investments, LLC | History | No change | 16,017 | 173 | 0.03% | 0.03% | 47 | 0 | 0.0% | Q1 2026 | Apr 20, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | New | 11,395 | 123 | 0.0% | — | 48 | +11,395 | New | Q1 2026 | May 15, 2026 |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC | History | No change | 7,800 | 84 | 0.02% | 0.02% | 49 | 0 | 0.0% | Q1 2026 | May 12, 2026 |
| UBS Group AG | History | Reduced | 4,156 | 44 | 0.0% | 0.0% | 50 | -2,045 | -32.98% | Q1 2026 | May 05, 2026 |
| ROYAL BANK OF CANADA | History | New | 900 | 10 | 0.0% | — | 51 | +900 | New | Q1 2026 | May 15, 2026 |
| HGC Investment Management Inc. | History | Closed out | 0 | 0 | — | 3.12% | — | -1,375,000 | -100.0% | Q1 2026 | May 15, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | History | Closed out | 0 | 0 | — | 0.01% | — | -295,938 | -100.0% | Q1 2026 | May 14, 2026 |
| Shaolin Capital Management LLC | History | Closed out | 0 | 0 | — | 0.04% | — | -125,000 | -100.0% | Q1 2026 | May 15, 2026 |
| Schonfeld Strategic Advisors LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -18,053 | -100.0% | Q1 2026 | May 15, 2026 |
| CONDOR CAPITAL MANAGEMENT | History | Closed out | 0 | 0 | — | 0.01% | — | -10,632 | -100.0% | Q1 2026 | May 11, 2026 |
| MORGAN STANLEY | History | Reduced | 64 | 0 | — | — | — | -15 | -18.99% | Q1 2026 | May 15, 2026 |