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 $96.9M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in GP-Act III Acquisition Corp. as of Jun 30, 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
- 24
- −27 vs. Q1 2026
- Shares held
- 8.90M
- −17.6M (−66.5%) vs. Q1 2026
- Total value
- $96.9M
- −$191.0M (−66.3%) vs. Q1 2026
- New holders
- 3
- 5 more added
- Sold out
- 30
- 12 more reduced
Compare with Q1 2026: 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 | $96.9M |
| Q1 2026 | 51 | $287.8M |
| Q4 2025 | 52 | $305.7M |
| Q3 2025 | 52 | $297.8M |
| 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, Q2 2026
Shares, value and share of portfolio for each institution holding GP-Act III Acquisition Corp.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Polar Asset Management Partners Inc. | 1,800,000 | $19.6M | 0.36% | +625,004+53.2% | Added |
| CNH Partners LLC | 1,400,000 | $15.2M | 0.22% | −176,803−11.2% | Reduced |
| MMCAP International Inc. SPC | 1,275,000 | $13.9M | 1.17% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 1,000,000 | $10.9M | 0.06% | −625,000−38.5% | Reduced |
| Mizuho Securities USA LLC | 618,584 | $6.68M | 0.06% | +558,486+929.3% | Added |
| Berkley W R Corp | 497,064 | $5.41M | 0.27% | −349,759−41.3% | Reduced |
| Verition Fund Management LLC | 398,885 | $4.34M | 0.03% | +171,297+75.3% | Added |
| HGC Investment Management Inc. | 399,387 | $4.34M | 0.86% | +399,387 | New |
| Toronto Dominion Bank | 345,181 | $3.75M | 0.01% | −290,284−45.7% | Reduced |
| Deutsche Bank AG | 290,000 | $3.15M | 0.00% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 250,000 | $2.72M | 0.03% | −1,125,000−81.8% | Reduced |
| Periscope Capital Inc. | 150,000 | $1.66M | 0.26% | −100,000−40.0% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 149,950 | $1.63M | 0.00% | +149,950 | New |
| JPMorgan Chase & Co | 99,860 | $1.09M | 0.00% | −450,038−81.8% | Reduced |
| Lineage Point Capital LP | 64,795 | $716.0K | 0.15% | −205−0.3% | Reduced |
| Moore Capital Management, LP | 50,000 | $543.5K | 0.01% | −150,000−75.0% | Reduced |
| Kepos Capital LP | 42,500 | $470.0K | 0.64% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 21,362 | $232.6K | 0.00% | +9,967+87.5% | Added |
| Citadel Advisors LLC | 20,039 | $218.2K | 0.00% | +2,867+16.7% | Added |
| HRT Financial LP | 14,965 | $162.0K | 0.00% | +14,965 | New |
| Clear Street Group Inc. | 9,195 | $100.0K | 0.00% | −1,126−10.9% | Reduced |
| Longfellow Investment Management Co LLC | 7,800 | $84.8K | 0.02% | 00.0% | Unchanged |
| Morgan Stanley | 23 | $250 | 0.00% | −41−64.1% | Reduced |
| UBS Group AG | 18 | $195 | 0.00% | −168−90.3% | Reduced |
| Karpus Management, Inc. | 0 | $0 | 0.00% | −2,230,216−100.0% | Sold out |
| Vivaldi Asset Management, LLC | 0 | $0 | 0.00% | −2,091,077−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −1,423,125−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −1,225,000−100.0% | Sold out |
| Wealthspring Capital LLC | 0 | $0 | 0.00% | −1,006,939−100.0% | Sold out |
| Westchester Capital Management, LLC | 0 | $0 | 0.00% | −860,852−100.0% | Sold out |
| Linden Advisors LP | 0 | $0 | 0.00% | −797,584−100.0% | Sold out |
| Tenor Capital Management Co., L.P. | 0 | $0 | 0.00% | −750,000−100.0% | Sold out |
| Wolverine Asset Management LLC | 0 | $0 | 0.00% | −745,440−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −625,000−100.0% | Sold out |
| Radcliffe Capital Management, L.P. | 0 | $0 | 0.00% | −623,267−100.0% | Sold out |
| L1 Global Manager Pty Ltd | 0 | $0 | 0.00% | −567,566−100.0% | Sold out |
| Aristeia Capital LLC | 0 | $0 | 0.00% | −490,750−100.0% | Sold out |
| Highbridge Capital Management LLC | 0 | $0 | 0.00% | −452,072−100.0% | Sold out |
| Heights Capital Management, Inc | 0 | $0 | 0.00% | −388,719−100.0% | Sold out |
| Rivernorth Capital Management, LLC | 0 | $0 | 0.00% | −360,013−100.0% | Sold out |
| Meteora Capital, LLC | 0 | $0 | 0.00% | −343,722−100.0% | Sold out |
| O'Connor Alternative Investments LLC | 0 | $0 | 0.00% | −250,000−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −249,980−100.0% | Sold out |
| Glazer Capital, LLC | 0 | $0 | 0.00% | −236,227−100.0% | Sold out |
| Sona Asset Management (US) LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −137,739−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −80,000−100.0% | Sold out |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 0 | $0 | 0.00% | −53,900−100.0% | Sold out |
| Dakota Wealth Management | 0 | $0 | 0.00% | −46,400−100.0% | Sold out |
| Robinson Capital Management, LLC | 0 | $0 | 0.00% | −22,250−100.0% | Sold out |
| Wellspring Financial Advisors, LLC | 0 | $0 | 0.00% | −21,200−100.0% | Sold out |
| Cannon Global Investment Management, LLC | 0 | $0 | 0.00% | −16,700−100.0% | Sold out |
| TrueMark Investments, LLC | 0 | $0 | 0.00% | −16,017−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −900−100.0% | Sold out |