Pioneer Acquisition I Corp
PACH
59 hedge funds and large institutions have $219M invested in Pioneer Acquisition I Corp in 2025 Q4 according to their latest regulatory filings, with 17 funds opening new positions, 5 increasing their positions, 10 reducing their positions, and 1 closing their positions.
1,600% more first-time investments, than exits
New positions opened: 17 | Existing positions closed: 1
34% more funds holding
Funds holding: 44 → 59 (+15)
25% more capital invested
Capital invested by funds: $174M → $219M (+$44.3M)
16.67% more ownership
Funds ownership: 69.27% → 85.94% (+17%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
50% less repeat investments, than reductions
Existing positions increased: 5 | Existing positions reduced: 10
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MF
Magnetar Financial
Evanston,
Illinois
|
+$10.1M |
| 2 |
MI
MMCAP International
Grand Cayman,
Cayman Islands
|
+$7.55M |
| 3 |
D.E. Shaw & Co
New York
|
+$5.64M |
| 4 |
MC
Meteora Capital
Boca Raton,
Florida
|
+$5.54M |
| 5 |
AIMCA
Alberta Investment Management Corp (AIMCo)
Edmonton,
Alberta, Canada
|
+$5.03M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CS
Clear Street
New York
|
-$4.07M |
| 2 |
MSU
Mizuho Securities USA
New York
|
-$2.52M |
| 3 |
VF
Virtu Financial
New York
|
-$2.28M |
| 4 |
Toronto Dominion Bank
Toronto, Ontario,
Ontario, Canada
|
-$2.25M |
| 5 |
SCM
Shaolin Capital Management
Miami,
Florida
|
-$2.01M |
PACH Hedge Fund Activity: Q4 2025 in Review
59 of the 8,282 institutional investors tracked by Wall St. Rank reported a position in Pioneer Acquisition I Corp (PACH) for Q4 2025, worth a combined $219M — up 25% from $174M a quarter earlier.
Buyers outnumbered sellers: 17 funds opened new PACH positions and 1 closed out — a net gain of 16 holders — while 5 added to existing stakes and 10 trimmed.
The largest buyer was Magnetar Financial, opening a new position worth an estimated $10.1M. The largest seller was Clear Street, cutting an estimated $4.07M.
- 59 institutional investors held Pioneer Acquisition I Corp (PACH) as of Q4 2025, up from 44 in Q3 2025.
- Funds reported $219M of Pioneer Acquisition I Corp stock for Q4 2025, up 25% quarter-over-quarter.
- 17 funds opened new Pioneer Acquisition I Corp positions in Q4 2025 and 1 closed out, a net change of +16 holders.
- The largest Pioneer Acquisition I Corp buyer in Q4 2025 was Magnetar Financial, an estimated $10.1M added.
- The largest Pioneer Acquisition I Corp seller in Q4 2025 was Clear Street, an estimated $4.07M sold.
Based on aggregated 13F filings for Q4 2025.