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PACHU

Pioneer Acquisition I Corp Units
PACHU

29 hedge funds and large institutions have $74.7M invested in Pioneer Acquisition I Corp Units in 2025 Q3 according to their latest regulatory filings, with 1 funds opening new positions, 5 increasing their positions, 8 reducing their positions, and 41 closing their positions.

New
Increased
Maintained
Reduced
Closed

38% less repeat investments, than reductions

Existing positions increased: 5 | Existing positions reduced: 8

58% less funds holding

Funds holding: 69 → 29 (-40)

69% less capital invested

Capital invested by funds: $242M → $74.7M (-$167M)

76.04% less ownership

Funds ownership: 109.83% → 33.79% (-76%)

98% less first-time investments, than exits

New positions opened: 1 | Existing positions closed: 41

100% less funds holding in top 10

Funds holding in top 10: 1 → 0 (-1)

Holders
29
Holders Change
-40
Holders Change %
-57.97%
% of All Funds
0.38%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
1
Increased
5
Reduced
8
Closed
41
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
WCMNY
Westchester Capital Management (New York)
New York
+$6.02M
2
JG
Jain Global
New York
+$1.15M
3
Parallax Volatility Advisers
Parallax Volatility Advisers
California
+$238K
4
RC
Rangeley Capital
Connecticut
+$222K
5
PCM
PenderFund Capital Management
British Columbia, Canada
+$124K

Top Sellers

Rank Fund Capital Flow
1
AA
AQR Arbitrage
Connecticut
-$12.9M
2
GCL
Glazer Capital LLC
New York
-$10.6M
3
Two Sigma Investments
Two Sigma Investments
New York
-$7.98M
4
LA
Linden Advisors
New York
-$7.51M
5
WC
Wealthspring Capital
New York
-$6.67M
Name Holding Trade Value Shares
Change 		Change in
Stake
WA
51
Whitebox Advisors
Minnesota
– -$3M -300,000 Closed
SCM
52
Saba Capital Management
New York
– -$2.99M -298,473 Closed
GCM
53
Ghisallo Capital Management
Massachusetts
– -$2.5M -250,000 Closed
MCM
54
Moore Capital Management
New York
– -$2.5M -250,000 Closed
Hudson Bay Capital Management
55
Hudson Bay Capital Management
Connecticut
– -$2.46M -246,000 Closed
CL
56
CSS LLC
Illinois
– -$2.4M -240,212 Closed
SG
57
StoneX Group
New York
– -$1.6M -160,000 Closed
ASM
58
ATW SPAC Management
New York
– -$1.5M -150,000 Closed
BFM
59
Boothbay Fund Management
New York
– -$1.5M -150,000 Closed
CCM
60
Context Capital Management
California
– -$1.5M -150,000 Closed
WRBC
61
W.R. Berkley Corp
Connecticut
– -$1.49M -148,726 Closed
GL
62
Governors Lane
New York
– -$1M -100,000 Closed
GAM
63
Gritstone Asset Management
Maryland
– -$700K -70,000 Closed
Citadel Advisors
64
Citadel Advisors
Florida
– -$562K -56,128 Closed
BI
65
Bulldog Investors
New Jersey
– -$550K -55,000 Closed
CC
66
Centiva Capital
New York
– -$501K -50,000 Closed
CA
67
Crossingbridge Advisors
New York
– -$488K -48,776 Closed
DAM
68
Decagon Asset Management
United Kingdom
– -$346K -34,614 Closed
MC
69
Meteora Capital
Florida
– -$300K -29,987 Closed
DAM
70
Deltec Asset Management
New York
– -$100K -10,000 Closed
1 2
3

PACHU Hedge Fund Activity: Q3 2025 in Review

29 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Pioneer Acquisition I Corp Units (PACHU) for Q3 2025, worth a combined $74.7M — down 69% from $242M a quarter earlier.

Sellers outnumbered buyers: 41 funds closed out of PACHU and 1 opened new positions — a net loss of 40 holders — while 8 trimmed existing stakes and 5 added.

The largest buyer was Westchester Capital Management (New York), adding an estimated $6.02M. The largest seller was AQR Arbitrage, exiting entirely with an estimated $12.9M sold.

  • 29 institutional investors held Pioneer Acquisition I Corp Units (PACHU) as of Q3 2025, down from 69 in Q2 2025.
  • Funds reported $74.7M of Pioneer Acquisition I Corp Units stock for Q3 2025, down 69% quarter-over-quarter.
  • 1 fund opened new Pioneer Acquisition I Corp Units positions in Q3 2025 and 41 closed out, a net change of -40 holders.
  • The largest Pioneer Acquisition I Corp Units buyer in Q3 2025 was Westchester Capital Management (New York), an estimated $6.02M added.
  • The largest Pioneer Acquisition I Corp Units seller in Q3 2025 was AQR Arbitrage, an estimated $12.9M sold.

Based on aggregated 13F filings for Q3 2025.