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 |
|---|---|---|---|---|---|
| Morgan Stanley | 64 | $694 | 0.00% | −15−19.0% | Reduced |
| UBS Group AG | 186 | $2.02K | 0.00% | −2,045−91.7% | Reduced |
| Royal Bank of Canada | 900 | $10.0K | 0.00% | +900 | New |
| Longfellow Investment Management Co LLC | 7,800 | $84.6K | 0.02% | 00.0% | Unchanged |
| Clear Street Group Inc. | 10,321 | $111.9K | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 11,395 | $123.5K | 0.00% | +11,395 | New |
| TrueMark Investments, LLC | 16,017 | $173.6K | 0.03% | 00.0% | Unchanged |
| Cannon Global Investment Management, LLC | 16,700 | $181.0K | 0.44% | +2,200+15.2% | Added |
| Citadel Advisors LLC | 17,172 | $186.1K | 0.00% | +2,263+15.2% | Added |
| Wellspring Financial Advisors, LLC | 21,200 | $229.8K | 0.02% | 00.0% | Unchanged |
| Robinson Capital Management, LLC | 22,250 | $240.1K | 0.11% | 00.0% | Unchanged |
| Kepos Capital LP | 42,500 | $461.0K | 0.75% | 00.0% | Unchanged |
| Dakota Wealth Management | 46,400 | $503.0K | 0.01% | −2,000−4.1% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 53,900 | $584.3K | 0.00% | −358,364−86.9% | Reduced |
| Mizuho Securities USA LLC | 60,098 | $649.1K | 0.02% | −259,811−81.2% | Reduced |
| Lineage Point Capital LP | 65,000 | $704.6K | 0.17% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 80,000 | $867.2K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 137,739 | $1.49M | 0.00% | 00.0% | Unchanged |
| 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 |
| Verition Fund Management LLC | 227,588 | $2.47M | 0.02% | −1,536−0.7% | Reduced |
| Glazer Capital, LLC | 236,227 | $2.56M | 0.05% | −13,873−5.5% | Reduced |
| Jain Global LLC | 249,980 | $2.71M | 0.03% | −200.0% | Reduced |
| 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 |
| Deutsche Bank AG | 290,000 | $3.14M | 0.00% | 00.0% | Unchanged |
| Meteora Capital, LLC | 343,722 | $3.73M | 0.27% | −64,997−15.9% | Reduced |
| Rivernorth Capital Management, LLC | 360,013 | $3.90M | 0.20% | −60,098−14.3% | Reduced |
| Heights Capital Management, Inc | 388,719 | $4.21M | 1.18% | −27,377−6.6% | Reduced |
| Highbridge Capital Management LLC | 452,072 | $4.89M | 0.31% | +452,072 | New |
| Aristeia Capital LLC | 490,750 | $5.32M | 0.12% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 549,898 | $5.95M | 0.00% | +500,082+1,003.9% | Added |
| L1 Global Manager Pty Ltd | 567,566 | $6.15M | 4.96% | 00.0% | Unchanged |
| Radcliffe Capital Management, L.P. | 623,267 | $6.76M | 0.51% | +50,045+8.7% | Added |
| Two Sigma Investments, LP | 625,000 | $6.78M | 0.01% | 00.0% | Unchanged |
| Toronto Dominion Bank | 635,465 | $6.89M | 0.01% | +235,465+58.9% | Added |
| Wolverine Asset Management LLC | 745,440 | $8.08M | 0.13% | −206,309−21.7% | Reduced |
| Tenor Capital Management Co., L.P. | 750,000 | $8.13M | 0.13% | 00.0% | Unchanged |
| Linden Advisors LP | 797,584 | $8.65M | 0.05% | 00.0% | Unchanged |
| Berkley W R Corp | 846,823 | $9.18M | 0.49% | +534,533+171.2% | Added |
| Westchester Capital Management, LLC | 860,852 | $9.33M | 0.45% | −500,000−36.7% | Reduced |
| Wealthspring Capital LLC | 1,006,939 | $10.9M | 2.59% | −11,343−1.1% | Reduced |
| Polar Asset Management Partners Inc. | 1,174,996 | $12.7M | 0.30% | 00.0% | Unchanged |
| LMR Partners LLP | 1,225,000 | $13.3M | 0.12% | 00.0% | Unchanged |
| MMCAP International Inc. SPC | 1,275,000 | $13.8M | 1.19% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 1,375,000 | $14.9M | 0.16% | −500,000−26.7% | Reduced |
| D. E. Shaw & Co., Inc. | 1,423,125 | $15.4M | 0.01% | 00.0% | Unchanged |
| CNH Partners LLC | 1,576,803 | $17.1M | 0.28% | +6840.0% | Added |
| Alberta Investment Management Corp | 1,625,000 | $17.6M | 0.11% | 00.0% | Unchanged |
| Vivaldi Asset Management, LLC | 2,091,077 | $22.7M | 1.19% | 00.0% | Unchanged |
| Karpus Management, Inc. | 2,230,216 | $24.2M | 0.75% | −101,650−4.4% | 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 |