Pioneer Acquisition I Corp (PACH) — Institutional Holders, Q2 2026
76 institutional investment managers reported a PACH position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $253.6M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
PACH in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- MIZUHO SECURITIES USANew · +183,497 sh+$1.3M
- Lineage Point CapitalAdded · +83,014 sh+$575.7K
- WOLVERINE ASSET MANAGEMENTAdded · +82,037 sh+$568.9K
- Logan Stone CapitalNew · +60,737 sh+$421.2K
- Karpus ManagementAdded · +50,000 sh+$346.7K
Biggest sellers
- HEALTHCARE OF ONTARIO PENSION PLAN FUNDTrimmed · -200,000 sh-$1.4M
- Shaolin Capital ManagementTrimmed · -133,816 sh-$928.0K
- Jain GlobalTrimmed · -113,243 sh-$785.3K
- Wealthspring CapitalTrimmed · -67,000 sh-$464.6K
- TORONTO DOMINION BANKTrimmed · -59,475 sh-$412.4K
PACH 13F holders ranked 1–76 of 76
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Westchester Capital Management#1 · 1,683,611 sh | 1,683,611 | $12.9M | 0.63% | 0.0% |
| 2 | D. E. Shaw#2 · 1,252,350 sh | 1,252,350 | $12.8M | <0.01% | 0.0% |
| 3 | GLAZER CAPITAL#3 · 1,410,643 sh | 1,410,643 | $12.4M | 0.31% | 0.0% |
| 4 | Magnetar Financial#4 · 1,500,000 sh | 1,500,000 | $10.3M | 0.09% | 0.0% |
| 5 | LINDEN ADVISORS#5 · 1,375,001 sh | 1,375,001 | $10.3M | 0.05% | 0.0% |
| 6 | AQR Arbitrage#6 · 1,452,324 sh | 1,452,324 | $9.9M | 0.14% | +0.7% |
| 7 | TWO SIGMA INVESTMENTS#7 · 797,500 sh | 797,500 | $8.2M | <0.01% | 0.0% |
| 8 | WOLVERINE ASSET MANAGEMENT#8 · 885,511 sh | 885,511 | $8.1M | 0.07% | +10.2% |
| 9 | Wealthspring Capital#9 · 1,214,835 sh | 1,214,835 | $8.0M | 1.80% | -5.2% |
| 10 | MMCAP International SPC#10 · 1,125,000 sh | 1,125,000 | $7.8M | 0.66% | 0.0% |
| 11 | LMR Partners LLP#11 · 750,000 sh | 750,000 | $7.7M | 0.03% | 0.0% |
| 12 | HGC Investment Management#12 · 743,077 sh | 743,077 | $7.7M | 1.51% | 0.0% |
| 13 | Radcliffe Capital Management, L.P.#13 · 879,549 sh | 879,549 | $6.5M | 0.49% | 0.0% |
| 14 | TENOR CAPITAL MANAGEMENT , L.P.#14 · 900,000 sh | 900,000 | $6.2M | 0.09% | 0.0% |
| 15 | Karpus Management#15 · 551,988 sh | 551,988 | $5.6M | 0.16% | +10.0% |
| 16 | Verition Fund Management#16 · 877,276 sh | 877,276 | $5.4M | <0.01% | 0.0% |
| 17 | PICTON MAHONEY ASSET MANAGEMENT#17 · 750,000 sh | 750,000 | $5.2M | 0.04% | 0.0% |
| 18 | Alberta Investment Management#18 · 750,000 sh | 750,000 | $5.2M | 0.03% | 0.0% |
| 19 | First Capital Management L.P.#19 · 500,000 sh | 500,000 | $5.1M | 0.30% | 0.0% |
| 20 | TORONTO DOMINION BANK#20 · 882,991 sh | 882,991 | $5.1M | <0.01% | -6.3% |
| 21 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#21 · 775,000 sh | 775,000 | $4.7M | <0.01% | -20.5% |
| 22 | MANGROVE PARTNERS IM#22 · 450,000 sh | 450,000 | $4.6M | 0.30% | 0.0% |
| 23 | OMERS ADMINISTRATION#23 · 660,000 sh | 660,000 | $4.5M | 0.03% | 0.0% |
| 24 | Polar Asset Management Partners#24 · 658,500 sh | 658,500 | $4.1M | 0.07% | +1.3% |
| 25 | ARISTEIA CAPITAL, L.L.C.#25 · 600,000 sh | 600,000 | $4.1M | 0.05% | 0.0% |
| 26 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS#26 · 600,000 sh | 600,000 | $4.1M | 0.02% | 0.0% |
| 27 | Mint Tower Capital Management B.V.#27 · 600,000 sh | 600,000 | $4.1M | 0.47% | 0.0% |
| 28 | Jain Global#28 · 636,736 sh | 636,736 | $4.0M | 0.02% | -15.1% |
| 29 | Shaolin Capital Management#29 · 965,089 sh | 965,089 | $4.0M | 0.19% | -12.2% |
| 30 | BNP PARIBAS FINANCIAL MARKETS#30 · 502,700 sh | 502,700 | $3.6M | <0.01% | 0.0% |
| 31 | PERISCOPE CAPITAL#31 · 604,700 sh | 604,700 | $3.1M | 0.28% | 0.0% |
| 32 | WHITEBOX ADVISORS#32 · 450,000 sh | 450,000 | $3.1M | 0.04% | 0.0% |
| 33 | MILLENNIUM MANAGEMENT#33 · 287,700 sh | 287,700 | $2.9M | <0.01% | 0.0% |
| 34 | METEORA CAPITAL#34 · 469,206 sh | 469,206 | $2.8M | 0.23% | +128.5% |
| 35 | RIVERNORTH CAPITAL MANAGEMENT#35 · 374,637 sh | 374,637 | $2.6M | 0.12% | 0.0% |
| 36 | MOORE CAPITAL MANAGEMENT#36 · 375,000 sh | 375,000 | $2.6M | 0.04% | 0.0% |
| 37 | Ghisallo Capital Management#37 · 250,000 sh | 250,000 | $2.6M | 0.05% | 0.0% |
| 38 | O'Connor Alternative Investments#38 · 250,000 sh | 250,000 | $2.6M | 0.19% | 0.0% |
| 39 | Hudson Bay Capital Management#39 · 369,000 sh | 369,000 | $2.5M | <0.01% | 0.0% |
| 40 | CSS#40 · 516,007 sh | 516,007 | $2.2M | 0.09% | 0.0% |
| 41 | MIZUHO SECURITIES USA#41 · 183,497 sh | 183,497 | $1.9M | 0.02% | New |
| 42 | Clear Street Group#42 · 453,547 sh | 453,547 | $1.7M | <0.01% | -4.5% |
| 43 | Lineage Point Capital#43 · 240,686 sh | 240,686 | $1.6M | 0.34% | +52.6% |
| 44 | TIG Advisors#44 · 224,999 sh | 224,999 | $1.6M | 0.07% | 0.0% |
| 45 | BERKLEY W R#45 · 198,726 sh | 198,726 | $1.5M | 0.07% | -10.9% |
| 46 | Parallax Volatility Advisers, L.P.#46 · 129,909 sh | 129,909 | $1.3M | <0.01% | +37.6% |
| 47 | SONA ASSET MANAGEMENT (US)#47 · 111,059 sh | 111,059 | $1.1M | 0.02% | 0.0% |
| 48 | SYQUANT CAPITAL SAS#48 · 110,000 sh | 110,000 | $1.1M | — | 0.0% |
| 49 | BOOTHBAY FUND MANAGEMENT#49 · 105,891 sh | 105,891 | $1.1M | 0.01% | 0.0% |
| 50 | Dakota Wealth Management#50 · 104,100 sh | 104,100 | $1.1M | 0.02% | 0.0% |
| 51 | DLD Asset Management#51 · 153,126 sh | 153,126 | $1.1M | 0.07% | -14.0% |
| 52 | Governors Lane#52 · 150,000 sh | 150,000 | $1.0M | 0.09% | 0.0% |
| 53 | JPMORGAN CHASE#53 · 100,000 sh | 100,000 | $1.0M | <0.01% | 0.0% |
| 54 | HEIGHTS CAPITAL MANAGEMENT#54 · 100,000 sh | 100,000 | $1.0M | 0.24% | -33.3% |
| 55 | GRITSTONE ASSET MANAGEMENT#55 · 103,986 sh | 103,986 | $716.7K | — | 0.0% |
| 56 | Logan Stone Capital#56 · 60,737 sh | 60,737 | $621.3K | 0.13% | New |
| 57 | Timelo Investment Management#57 · 90,000 sh | 90,000 | $620.3K | 0.18% | 0.0% |
| 58 | Centiva Capital#58 · 75,000 sh | 75,000 | $515.9K | <0.01% | 0.0% |
| 59 | Limestone Investment Advisors#59 · 48,017 sh | 48,017 | $491.2K | 0.04% | New |
| 60 | Kepos Capital#60 · 70,650 sh | 70,650 | $487.0K | 0.66% | 0.0% |
| 61 | PenderFund Capital Management Ltd.#61 · 38,172 sh | 38,172 | $389.7K | 0.05% | +151.1% |
| 62 | Stoic Point Capital Management#62 · 50,662 sh | 50,662 | $349.2K | 0.29% | 0.0% |
| 63 | READYSTATE ASSET MANAGEMENT#63 · 31,492 sh | 31,492 | $325.0K | <0.01% | 0.0% |
| 64 | ABC ARBITRAGE SA#64 · 25,000 sh | 25,000 | $255.8K | — | 0.0% |
| 65 | Yakira Capital Management#65 · 24,485 sh | 24,485 | $252.7K | 0.07% | 0.0% |
| 66 | HRT FINANCIAL#66 · 37,134 sh | 37,134 | $250.0K | <0.01% | +48.5% |
| 67 | L1 Global Manager Pty Ltd#67 · 24,400 sh | 24,400 | $249.6K | 0.18% | 0.0% |
| 68 | Rangeley Capital#68 · 21,345 sh | 21,345 | $220.3K | 0.20% | -3.6% |
| 69 | SRS Capital Advisors#69 · 15,750 sh | 15,750 | $108.5K | <0.01% | New |
| 70 | Virtu Financial#70 · 10,203 sh | 10,203 | $104.0K | <0.01% | New |
| 71 | Lepercq De Neuflize Asset Management#71 · 266,000 sh | 266,000 | $57.4K | 0.04% | 0.0% |
| 72 | LONGFELLOW INVESTMENT MANAGEMENT#72 · 500 sh | 500 | $5.2K | <0.01% | 0.0% |
| 73 | Endure Capital Management#73 · 22,400 sh | 22,400 | $4.8K | <0.01% | 0.0% |
| 74 | MORGAN STANLEY#74 · 49 sh | 49 | $501.00 | 0.00% | -27.9% |
| 75 | UBS Group AG#75 · 1,536 sh | 1,536 | $402.00 | 0.00% | -85.5% |
| 76 | Context Capital Management#76 · 225,000 sh | 225,000 | — | — | 0.0% |
Funds that sold out of PACH in Q2 2026 (2)
Held PACH at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| DELTEC ASSET MANAGEMENT10,000 sh | 10,000 | $101.3K |
| FNY Investment Advisers1,000 sh | 1,000 | $10.0K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.