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JACS.U

Jackson Acquisition Co II Units
JACS.U

11 hedge funds and large institutions have $53.7M invested in Jackson Acquisition Co II Units in 2025 Q1 according to their latest regulatory filings, with 2 funds opening new positions, 2 increasing their positions, 2 reducing their positions, and 32 closing their positions.

New
Increased
Maintained
Reduced
Closed

0% more repeat investments, than reductions

Existing positions increased: 2 | Existing positions reduced: 2

33% less funds holding in top 10

Funds holding in top 10: 3 → 2 (-1)

62.55% less ownership

Funds ownership: 84.43% → 21.88% (-63%)

73% less funds holding

Funds holding: 41 → 11 (-30)

73% less capital invested

Capital invested by funds: $203M → $53.7M (-$149M)

94% less first-time investments, than exits

New positions opened: 2 | Existing positions closed: 32

Holders
11
Holders Change
-30
Holders Change %
-73.17%
% of All Funds
0.15%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
2
Increased
2
Reduced
2
Closed
32
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
WCMNY
Westchester Capital Management (New York)
New York
+$3.57M
2
GCIA
Gabelli & Co Investment Advisers
New York
+$2.24M
3
GF
Gabelli Funds
New York
+$1.58M
4
HIM
HGC Investment Management
Ontario, Canada
+$766K

Top Sellers

Rank Fund Capital Flow
1
AA
AQR Arbitrage
Connecticut
-$16.1M
2
PAMP
Polar Asset Management Partners
Ontario, Canada
-$15.3M
3
HCI
Harraden Circle Investments
New York
-$15.1M
4
Hudson Bay Capital Management
Hudson Bay Capital Management
Connecticut
-$9.56M
5
SCM
Shaolin Capital Management
Florida
-$8.55M
Name Holding Trade Value Shares
Change 		Change in
Stake
HIM
1
HGC Investment Management
Ontario, Canada
$16.2M +$766K +75,200 +5%
WCMNY
2
Westchester Capital Management (New York)
New York
$8.75M +$3.57M +350,000 +70%
HCM
3
Heights Capital Management
California
$7.2M – – –
MF
4
Magnetar Financial
Illinois
$6.17M – – –
Calamos Advisors
5
Calamos Advisors
Illinois
$5.14M – – –
RCM
6
Rivernorth Capital Management
Florida
$4.12M – – –
GCIA
7
Gabelli & Co Investment Advisers
New York
$2.26M +$2.24M +220,100 New
WA
8
Whitebox Advisors
Minnesota
$1.8M – – –
GF
9
Gabelli Funds
New York
$1.59M +$1.58M +154,900 New
BI
10
Bulldog Investors
New Jersey
$369K -$1.48M -145,326 -80%
CS
11
Clear Street
New York
$56.4K -$1.17M -114,525 -95%
AA
12
AQR Arbitrage
Connecticut
– -$16.1M -1,600,000 Closed
PAMP
13
Polar Asset Management Partners
Ontario, Canada
– -$15.3M -1,525,000 Closed
HCI
14
Harraden Circle Investments
New York
– -$15.1M -1,500,000 Closed
Hudson Bay Capital Management
15
Hudson Bay Capital Management
Connecticut
– -$9.56M -950,000 Closed
SCM
16
Shaolin Capital Management
Florida
– -$8.55M -850,000 Closed
LA
17
Linden Advisors
New York
– -$8.05M -800,000 Closed
GCL
18
Glazer Capital LLC
New York
– -$7.04M -700,000 Closed
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
19
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
– -$6.54M -650,000 Closed
MTCM
20
Mint Tower Capital Management
Netherlands
– -$6.54M -650,000 Closed
MI
21
MMCAP International
Cayman Islands
– -$5.03M -500,000 Closed
Verition Fund Management
22
Verition Fund Management
Connecticut
– -$5.03M -500,000 Closed
Two Sigma Investments
23
Two Sigma Investments
New York
– -$4.78M -474,821 Closed
LP
24
LMR Partners
United Kingdom
– -$4.46M -443,751 Closed
SIA
25
Schechter Investment Advisors
Michigan
– -$4.28M -425,913 Closed
1
2

JACS.U Hedge Fund Activity: Q1 2025 in Review

11 of the 7,466 institutional investors tracked by Wall St. Rank reported a position in Jackson Acquisition Co II Units (JACS.U) for Q1 2025, worth a combined $53.7M — down 73% from $203M a quarter earlier.

Sellers outnumbered buyers: 32 funds closed out of JACS.U and 2 opened new positions — a net loss of 30 holders — while 2 trimmed existing stakes and 2 added.

The largest buyer was Westchester Capital Management (New York), adding an estimated $3.57M. The largest seller was AQR Arbitrage, exiting entirely with an estimated $16.1M sold.

  • 11 institutional investors held Jackson Acquisition Co II Units (JACS.U) as of Q1 2025, down from 41 in Q4 2024.
  • Funds reported $53.7M of Jackson Acquisition Co II Units stock for Q1 2025, down 73% quarter-over-quarter.
  • 2 funds opened new Jackson Acquisition Co II Units positions in Q1 2025 and 32 closed out, a net change of -30 holders.
  • The largest Jackson Acquisition Co II Units buyer in Q1 2025 was Westchester Capital Management (New York), an estimated $3.57M added.
  • The largest Jackson Acquisition Co II Units seller in Q1 2025 was AQR Arbitrage, an estimated $16.1M sold.

Based on aggregated 13F filings for Q1 2025.