GP-Act III Acquisition Corp.
GPAT- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0001834526
No open-market purchases or sales by GP-Act III Acquisition Corp. insiders were filed in the last 90 days; 24 institutions reported holding it in 13F filings for Q2 2026, worth $96.2M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in GP-Act III Acquisition Corp. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 51
- 0 vs. Q4 2025
- Shares held
- 26.6M
- −1.79M (−6.3%) vs. Q4 2025
- Total value
- $287.8M
- −$15.2M (−5.0%) vs. Q4 2025
- New holders
- 5
- 7 more added
- Sold out
- 5
- 17 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GPAT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 24 | $96.2M |
| Q1 2026 | 51 | $287.8M |
| Q4 2025 | 52 | $305.7M |
| Q3 2025 | 52 | $297.2M |
| Q2 2025 | 48 | $294.1M |
| Q1 2025 | 40 | $269.5M |
| Q4 2024 | 42 | $266.8M |
| Q3 2024 | 37 | $248.5M |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding GP-Act III Acquisition Corp.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Karpus Management, Inc. | 2,230,216 | $24.2M | 0.75% | −101,650−4.4% | Reduced |
| Vivaldi Asset Management, LLC | 2,091,077 | $22.7M | 1.19% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 1,625,000 | $17.6M | 0.11% | 00.0% | Unchanged |
| CNH Partners LLC | 1,576,803 | $17.1M | 0.28% | +6840.0% | Added |
| D. E. Shaw & Co., Inc. | 1,423,125 | $15.4M | 0.01% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 1,375,000 | $14.9M | 0.16% | −500,000−26.7% | Reduced |
| MMCAP International Inc. SPC | 1,275,000 | $13.8M | 1.19% | 00.0% | Unchanged |
| LMR Partners LLP | 1,225,000 | $13.3M | 0.12% | 00.0% | Unchanged |
| Polar Asset Management Partners Inc. | 1,174,996 | $12.7M | 0.30% | 00.0% | Unchanged |
| Wealthspring Capital LLC | 1,006,939 | $10.9M | 2.59% | −11,343−1.1% | Reduced |
| Westchester Capital Management, LLC | 860,852 | $9.33M | 0.45% | −500,000−36.7% | Reduced |
| Berkley W R Corp | 846,823 | $9.18M | 0.49% | +534,533+171.2% | Added |
| Linden Advisors LP | 797,584 | $8.65M | 0.05% | 00.0% | Unchanged |
| Tenor Capital Management Co., L.P. | 750,000 | $8.13M | 0.13% | 00.0% | Unchanged |
| Wolverine Asset Management LLC | 745,440 | $8.08M | 0.13% | −206,309−21.7% | Reduced |
| Toronto Dominion Bank | 635,465 | $6.89M | 0.01% | +235,465+58.9% | Added |
| Two Sigma Investments, LP | 625,000 | $6.78M | 0.01% | 00.0% | Unchanged |
| Radcliffe Capital Management, L.P. | 623,267 | $6.76M | 0.51% | +50,045+8.7% | Added |
| L1 Global Manager Pty Ltd | 567,566 | $6.15M | 4.96% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 549,898 | $5.95M | 0.00% | +500,082+1,003.9% | Added |
| Aristeia Capital LLC | 490,750 | $5.32M | 0.12% | 00.0% | Unchanged |
| Highbridge Capital Management LLC | 452,072 | $4.89M | 0.31% | +452,072 | New |
| Heights Capital Management, Inc | 388,719 | $4.21M | 1.18% | −27,377−6.6% | Reduced |
| Rivernorth Capital Management, LLC | 360,013 | $3.90M | 0.20% | −60,098−14.3% | Reduced |
| Meteora Capital, LLC | 343,722 | $3.73M | 0.27% | −64,997−15.9% | Reduced |
| Deutsche Bank AG | 290,000 | $3.14M | 0.00% | 00.0% | Unchanged |
| Periscope Capital Inc. | 250,000 | $2.71M | 0.47% | −94,000−27.3% | Reduced |
| O'Connor Alternative Investments LLC | 250,000 | $2.71M | 0.14% | +250,000 | New |
| Jain Global LLC | 249,980 | $2.71M | 0.03% | −200.0% | Reduced |
| Glazer Capital, LLC | 236,227 | $2.56M | 0.05% | −13,873−5.5% | Reduced |
| Verition Fund Management LLC | 227,588 | $2.47M | 0.02% | −1,536−0.7% | Reduced |
| Moore Capital Management, LP | 200,000 | $2.17M | 0.08% | 00.0% | Unchanged |
| Sona Asset Management (US) LLC | 200,000 | $2.17M | 0.08% | +200,000 | New |
| Goldman Sachs Group Inc | 137,739 | $1.49M | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 80,000 | $867.2K | 0.00% | 00.0% | Unchanged |
| Lineage Point Capital LP | 65,000 | $704.6K | 0.17% | 00.0% | Unchanged |
| Mizuho Securities USA LLC | 60,098 | $649.1K | 0.02% | −259,811−81.2% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 53,900 | $584.3K | 0.00% | −358,364−86.9% | Reduced |
| Dakota Wealth Management | 46,400 | $503.0K | 0.01% | −2,000−4.1% | Reduced |
| Kepos Capital LP | 42,500 | $461.0K | 0.75% | 00.0% | Unchanged |
| Robinson Capital Management, LLC | 22,250 | $240.1K | 0.11% | 00.0% | Unchanged |
| Wellspring Financial Advisors, LLC | 21,200 | $229.8K | 0.02% | 00.0% | Unchanged |
| Citadel Advisors LLC | 17,172 | $186.1K | 0.00% | +2,263+15.2% | Added |
| Cannon Global Investment Management, LLC | 16,700 | $181.0K | 0.44% | +2,200+15.2% | Added |
| TrueMark Investments, LLC | 16,017 | $173.6K | 0.03% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 11,395 | $123.5K | 0.00% | +11,395 | New |
| Clear Street Group Inc. | 10,321 | $111.9K | 0.00% | 00.0% | Unchanged |
| Longfellow Investment Management Co LLC | 7,800 | $84.6K | 0.02% | 00.0% | Unchanged |
| Royal Bank of Canada | 900 | $10.0K | 0.00% | +900 | New |
| UBS Group AG | 186 | $2.02K | 0.00% | −2,045−91.7% | Reduced |
| Morgan Stanley | 64 | $694 | 0.00% | −15−19.0% | Reduced |
| HGC Investment Management Inc. | 0 | $0 | 0.00% | −1,375,000−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −295,938−100.0% | Sold out |
| Shaolin Capital Management LLC | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −18,053−100.0% | Sold out |
| Condor Capital Management | 0 | $0 | 0.00% | −10,632−100.0% | Sold out |
| UBS Oconnor LLC | – | – | – | – | Not filed |