Pioneer Acquisition I Corp
PACH- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002040381
No open-market purchases or sales by Pioneer Acquisition I Corp insiders were filed in the last 90 days; 67 institutions reported holding it in 13F filings for Q2 2026, worth $230.1M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Pioneer Acquisition I 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
- 61
- +3 vs. Q4 2025
- Shares held
- 22.3M
- +798.6K (+3.7%) vs. Q4 2025
- Total value
- $226.2M
- +$10.1M (+4.7%) vs. Q4 2025
- New holders
- 6
- 8 more added
- Sold out
- 3
- 10 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 PACH 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 | 67 | $230.1M |
| Q1 2026 | 61 | $226.2M |
| Q4 2025 | 59 | $218.6M |
| Q3 2025 | 44 | $174.3M |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| 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 Pioneer Acquisition I Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Westchester Capital Management, LLC | 1,258,612 | $12.8M | 0.62% | +850,000+208.0% | Added |
| D. E. Shaw & Co., Inc. | 1,252,350 | $12.7M | 0.01% | 00.0% | Unchanged |
| Glazer Capital, LLC | 1,210,643 | $12.3M | 0.26% | +159,993+15.2% | Added |
| Magnetar Financial LLC | 1,000,000 | $10.2M | 0.10% | 00.0% | Unchanged |
| Linden Advisors LP | 1,000,000 | $10.2M | 0.06% | 00.0% | Unchanged |
| CNH Partners LLC | 948,381 | $9.64M | 0.16% | −36,227−3.7% | Reduced |
| Wealthspring Capital LLC | 841,508 | $8.52M | 2.02% | −8,828−1.0% | Reduced |
| Two Sigma Investments, LP | 797,500 | $8.08M | 0.01% | 00.0% | Unchanged |
| MMCAP International Inc. SPC | 750,000 | $7.60M | 0.66% | 00.0% | Unchanged |
| Wolverine Asset Management LLC | 702,778 | $7.14M | 0.11% | +190,272+37.1% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 650,000 | $6.60M | 0.01% | 00.0% | Unchanged |
| Radcliffe Capital Management, L.P. | 629,247 | $6.38M | 0.48% | 00.0% | Unchanged |
| Tenor Capital Management Co., L.P. | 600,000 | $6.08M | 0.09% | 00.0% | Unchanged |
| Verition Fund Management LLC | 525,558 | $5.34M | 0.05% | −18,642−3.4% | Reduced |
| Karpus Management, Inc. | 501,988 | $5.09M | 0.16% | +20,900+4.3% | Added |
| Alberta Investment Management Corp | 500,000 | $5.08M | 0.03% | 00.0% | Unchanged |
| Jain Global LLC | 499,979 | $5.08M | 0.06% | −210.0% | Reduced |
| Picton Mahoney Asset Management | 500,000 | $5.07M | 0.05% | 00.0% | Unchanged |
| Vivaldi Asset Management, LLC | 500,000 | $5.07M | 0.27% | 00.0% | Unchanged |
| Shaolin Capital Management LLC | 500,000 | $5.07M | 0.21% | 00.0% | Unchanged |
| Mangrove Partners | 450,000 | $4.56M | 0.37% | 00.0% | Unchanged |
| Omers Administration Corp | 440,000 | $4.47M | 0.03% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 400,000 | $4.06M | 0.02% | 00.0% | Unchanged |
| Polar Asset Management Partners Inc. | 400,000 | $4.05M | 0.10% | −100,000−20.0% | Reduced |
| Aristeia Capital LLC | 400,000 | $4.05M | 0.09% | 00.0% | Unchanged |
| Mint Tower Capital Management B.V. | 400,000 | $4.05M | 0.40% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 348,493 | $3.53M | 0.00% | +40,079+13.0% | Added |
| Periscope Capital Inc. | 300,000 | $3.04M | 0.53% | −100,000−25.0% | Reduced |
| Whitebox Advisors LLC | 300,000 | $3.04M | 0.04% | 00.0% | Unchanged |
| Millennium Management LLC | 287,699 | $2.91M | 0.00% | +18,199+6.8% | Added |
| Ghisallo Capital Management LLC | 250,000 | $2.54M | 0.07% | 00.0% | Unchanged |
| O'Connor Alternative Investments LLC | 250,000 | $2.54M | 0.13% | +250,000 | New |
| Moore Capital Management, LP | 250,000 | $2.53M | 0.09% | 00.0% | Unchanged |
| Rivernorth Capital Management, LLC | 249,758 | $2.53M | 0.13% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 246,000 | $2.50M | 0.02% | 00.0% | Unchanged |
| CSS LLC | 210,988 | $2.14M | 0.12% | −1,400−0.7% | Reduced |
| Toronto Dominion Bank | 168,875 | $1.71M | 0.00% | +23,875+16.5% | Added |
| Context Capital Management, LLC | 150,000 | $1.52M | 0.04% | 00.0% | Unchanged |
| TIG Advisors, LLC | 150,000 | $1.52M | 0.07% | 00.0% | Unchanged |
| Clear Street Group Inc. | 149,456 | $1.51M | 0.01% | −168,989−53.1% | Reduced |
| Berkley W R Corp | 148,726 | $1.51M | 0.08% | 00.0% | Unchanged |
| DLD Asset Management, LP | 127,737 | $1.29M | 0.13% | 00.0% | Unchanged |
| Sona Asset Management (US) LLC | 111,059 | $1.13M | 0.04% | +111,059 | New |
| Lineage Point Capital LP | 106,805 | $1.08M | 0.26% | 00.0% | Unchanged |
| Dakota Wealth Management | 104,100 | $1.05M | 0.02% | −4,900−4.5% | Reduced |
| Heights Capital Management, Inc | 100,000 | $1.02M | 0.28% | 00.0% | Unchanged |
| Governors Lane LP | 100,000 | $1.01M | 0.13% | 00.0% | Unchanged |
| Parallax Volatility Advisers, L.P. | 94,401 | $960.5K | 0.04% | +94,401 | New |
| Boothbay Fund Management, LLC | 83,391 | $844.8K | 0.02% | 00.0% | Unchanged |
| Gritstone Asset Management LLC | 69,324 | $702.3K | 0.75% | 00.0% | Unchanged |
| Timelo Investment Management Inc. | 60,000 | $607.8K | 0.83% | +60,000 | New |
| Centiva Capital, LP | 50,000 | $508.0K | 0.02% | 00.0% | Unchanged |
| Kepos Capital LP | 47,100 | $478.0K | 0.78% | +47,100 | New |
| Stoic Point Capital Management LLC | 33,775 | $342.1K | 0.34% | 00.0% | Unchanged |
| Abc Arbitrage SA | 25,000 | $253.3K | 0.03% | 00.0% | Unchanged |
| L1 Global Manager Pty Ltd | 24,400 | $247.2K | 0.20% | 00.0% | Unchanged |
| PenderFund Capital Management Ltd. | 15,200 | $154.4K | 0.02% | −2,200−12.6% | Reduced |
| Deltec Asset Management LLC | 10,000 | $101.3K | 0.02% | 00.0% | Unchanged |
| UBS Group AG | 9,060 | $91.8K | 0.00% | +9,060 | New |
| FNY Investment Advisers, LLC | 1,000 | $10.0K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 68 | $689 | 0.00% | +1+1.5% | Added |
| Meteora Capital, LLC | 0 | $0 | 0.00% | −549,969−100.0% | Sold out |
| Mizuho Securities USA LLC | 0 | $0 | 0.00% | −50,924−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −34,201−100.0% | Sold out |
| UBS Oconnor LLC | – | – | – | – | Not filed |