GP-Act III Acquisition Corp. - GPAT

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
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 Added to 2,331,866 24,927 0.77% 0.77% 1 +25,050 1.09% Q4 2025 Feb 17, 2026
First Trust Capital Management L.P. History No change 2,091,077 22,353 1.35% 1.43% 2 0 0.0% Q4 2025 Feb 13, 2026
PICTON MAHONEY ASSET MANAGEMENT History No change 1,875,000 20,043 0.16% 0.18% 3 0 0.0% Q4 2025 Feb 11, 2026
Alberta Investment Management Corp History No change 1,625,000 17,387 0.1% 0.12% 4 0 0.0% Q4 2025 Feb 19, 2026
AQR Arbitrage LLC History No change 1,576,119 16,864 0.35% 0.42% 5 0 0.0% Q4 2025 Feb 17, 2026
D. E. Shaw & Co., Inc. History No change 1,423,125 15,227 0.01% 0.01% 6 0 0.0% Q4 2025 Feb 17, 2026
HGC Investment Management Inc. History No change 1,375,000 14,698 3.12% 3.55% 7 0 0.0% Q4 2025 Feb 17, 2026
Westchester Capital Management, LLC History Added to 1,360,852 14,561 0.61% 0.54% 8 +250,000 22.51% Q4 2025 Feb 13, 2026
MMCAP International Inc. SPC History No change 1,275,000 13,629 1.36% 1.57% 9 0 0.0% Q4 2025 Feb 09, 2026
LMR Partners LLP History No change 1,225,000 13,095 0.02% 0.06% 10 0 0.0% Q4 2025 Feb 17, 2026
Polar Asset Management Partners Inc. History New 1,174,996 12,560 0.16% 11 +1,174,996 New Q4 2025 Feb 17, 2026
Wealthspring Capital LLC History Reduced 1,018,282 10,885 2.57% 2.6% 12 -13,581 -1.32% Q4 2025 Feb 05, 2026
WOLVERINE ASSET MANAGEMENT LLC History Reduced 951,749 10,174 0.08% 0.07% 13 -3,117 -0.33% Q4 2025 Feb 02, 2026
LINDEN ADVISORS LP History No change 797,584 8,534 0.05% 0.06% 14 0 0.0% Q4 2025 Feb 17, 2026
TENOR CAPITAL MANAGEMENT Co., L.P. History No change 750,000 8,017 0.11% 0.1% 15 0 0.0% Q4 2025 Feb 17, 2026
TWO SIGMA INVESTMENTS, LP History No change 625,000 6,681 0.01% 0.01% 16 0 0.0% Q4 2025 Feb 17, 2026
Radcliffe Capital Management, L.P. History Added to 573,222 6,127 0.33% 0.38% 17 +327 0.06% Q4 2025 Feb 17, 2026
L1 Global Manager Pty Ltd History New 567,566 6,067 3.97% 18 +567,566 New Q4 2025 Feb 13, 2026
ARISTEIA CAPITAL, L.L.C. History No change 490,750 5,246 0.11% 0.12% 19 0 0.0% Q4 2025 Feb 17, 2026
RIVERNORTH CAPITAL MANAGEMENT, LLC History Reduced 420,111 4,490 0.21% 0.25% 20 -821 -0.2% Q4 2025 Feb 17, 2026
HEIGHTS CAPITAL MANAGEMENT, INC History Reduced 416,096 4,452 1.6% 1.27% 21 -5,079 -1.21% Q4 2025 Feb 17, 2026
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS History No change 412,264 4,407 0.02% 0.02% 22 0 0.0% Q4 2025 Feb 10, 2026
METEORA CAPITAL, LLC History Added to 408,719 4,369 0.37% 0.28% 23 +157,689 62.82% Q4 2025 Feb 17, 2026
TORONTO DOMINION BANK History Reduced 400,000 4,276 0.01% 0.01% 24 -461,649 -53.58% Q4 2025 Feb 17, 2026
PERISCOPE CAPITAL INC. History No change 344,000 3,677 0.42% 0.58% 25 0 0.0% Q4 2025 Feb 10, 2026
MIZUHO SECURITIES USA LLC History Added to 319,909 3,382 0.06% 0.04% 26 +119,909 59.95% Q4 2025 Feb 09, 2026
BERKLEY W R CORP History Added to 312,290 3,338 0.16% 0.18% 27 +14,298 4.8% Q4 2025 Feb 13, 2026
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND History No change 295,938 3,166 0.01% 0.01% 28 0 0.0% Q4 2025 Feb 13, 2026
DEUTSCHE BANK AG\ History No change 290,000 3,100 0.0% 0.0% 29 0 0.0% Q4 2025 Feb 11, 2026
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) History Reduced 250,000 2,675 3.7% 0.6% 30 -100,000 -28.57% Q4 2025 Mar 04, 2026
Jain Global LLC History No change 250,000 2,675 0.01% 0.01% 31 0 0.0% Q4 2025 Feb 17, 2026
GLAZER CAPITAL, LLC History Reduced 250,100 2,674 0.07% 0.09% 32 -10,000 -3.84% Q4 2025 Feb 13, 2026
Verition Fund Management LLC History Added to 229,124 2,451 0.01% 0.01% 33 +1,500 0.66% Q4 2025 Feb 13, 2026
MOORE CAPITAL MANAGEMENT, LP History No change 200,000 2,138 0.03% 0.03% 34 0 0.0% Q4 2025 Feb 17, 2026
GOLDMAN SACHS GROUP INC History Reduced 137,739 1,472 0.0% 0.0% 35 -84 -0.06% Q4 2025 Mar 25, 2026
Shaolin Capital Management LLC History Added to 125,000 1,336 0.04% 0.05% 36 +25,000 25.0% Q4 2025 Feb 17, 2026
PNC FINANCIAL SERVICES GROUP, INC. History No change 80,000 855 0.0% 0.0% 37 0 0.0% Q4 2025 Feb 06, 2026
Lineage Point Capital LP History New 65,000 694 0.26% 38 +65,000 New Q4 2025 Feb 26, 2026
JPMORGAN CHASE & CO History Added to 49,816 533 0.0% 0.0% 39 +82 0.16% Q4 2025 Feb 11, 2026
Dakota Wealth Management History No change 48,400 517 0.01% 0.01% 40 0 0.0% Q4 2025 Jan 13, 2026
Kepos Capital LP History No change 42,500 454 2.58% 2.4% 41 0 0.0% Q4 2025 Feb 12, 2026
Clear Street Group Inc. History No change 25,080 267 0.0% 0.0% 42 0 0.0% Q4 2025 Feb 13, 2026
ROBINSON CAPITAL MANAGEMENT, LLC History No change 22,250 238 0.1% 0.12% 43 0 0.0% Q4 2025 Feb 13, 2026
Wellspring Financial Advisors, LLC History No change 21,200 226 0.02% 0.02% 44 0 0.0% Q4 2025 Feb 11, 2026
Schonfeld Strategic Advisors LLC History Reduced 18,053 192 0.0% 0.0% 45 -1,138 -5.93% Q4 2025 Feb 17, 2026
TrueMark Investments, LLC History Reduced 16,017 171 0.03% 0.03% 46 -821 -4.88% Q4 2025 Jan 14, 2026
CITADEL ADVISORS LLC History Reduced 14,909 159 0.0% 0.0% 47 -3,857 -20.55% Q4 2025 Feb 17, 2026
Cannon Global Investment Management, LLC History Added to 14,500 155 0.39% 0.17% 48 +4,000 38.1% Q4 2025 Jan 27, 2026
CONDOR CAPITAL MANAGEMENT History No change 10,632 113 0.01% 0.01% 49 0 0.0% Q4 2025 Feb 06, 2026
LONGFELLOW INVESTMENT MANAGEMENT CO LLC History No change 7,800 83 0.02% 0.02% 50 0 0.0% Q4 2025 Feb 11, 2026
UBS Group AG History Reduced 6,201 66 0.0% 0.0% 51 -8,926 -59.01% Q4 2025 Jan 29, 2026
DLD Asset Management, LP History Closed out 0 0 0.0% -150,000 -100.0% Q3 2025 Nov 14, 2025
Quarry LP History Closed out 0 0 0.15% -64,977 -100.0% Q3 2025 Nov 14, 2025
BANK OF AMERICA CORP /DE/ History Closed out 0 0 0.0% -8,000 -100.0% Q3 2025 Feb 03, 2026
MORGAN STANLEY History Added to 79 0 +23 41.07% Q4 2025 Feb 13, 2026