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HCMAU

HCM III Acquisition Corp Units
HCMAU

18 hedge funds and large institutions have $19M invested in HCM III Acquisition Corp Units in 2025 Q4 according to their latest regulatory filings, with 1 funds opening new positions, 5 increasing their positions, 4 reducing their positions, and 20 closing their positions.

New
Increased
Maintained
Reduced
Closed

25% more repeat investments, than reductions

Existing positions increased: 5 | Existing positions reduced: 4

28.53% less ownership

Funds ownership: 36.95% → 8.42% (-29%)

53% less funds holding

Funds holding: 38 → 18 (-20)

77% less capital invested

Capital invested by funds: $83.8M → $19M (-$64.8M)

95% less first-time investments, than exits

New positions opened: 1 | Existing positions closed: 20

100% less funds holding in top 10

Funds holding in top 10: 1 → 0 (-1)

Holders
18
Holders Change
-20
Holders Change %
-52.63%
% of All Funds
0.22%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
1
Increased
5
Reduced
4
Closed
20
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
CS
Clear Street
New York
+$686K
2
KC
Kryger Capital
United Kingdom
+$32.1K
3
HF
HRT Financial
New York
+$14.4K
4
Toronto Dominion Bank
Toronto Dominion Bank
Ontario, Canada
+$14.4K
5
WCA
Waratah Capital Advisors
Ontario, Canada
+$5.84K

Top Sellers

Rank Fund Capital Flow
1
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
-$10.4M
2
MF
Magnetar Financial
Illinois
-$10.3M
3
MI
MMCAP International
Cayman Islands
-$10.3M
4
MTCM
Mint Tower Capital Management
Netherlands
-$7.73M
5
AIMCA
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
-$5.67M
Name Holding Trade Value Shares
Change 		Change in
Stake
PAMP
1
Polar Asset Management Partners
Ontario, Canada
$5.14M – – –
Toronto Dominion Bank
2
Toronto Dominion Bank
Ontario, Canada
$3.61M +$14.4K +1,379 +0.4%
RCM
3
Rivernorth Capital Management
Florida
$2.06M – – –
WCA
4
Waratah Capital Advisors
Ontario, Canada
$1.48M +$5.84K +560 +0.4%
CS
5
Clear Street
New York
$1.3M +$686K +65,752 +108%
SCM
6
Steadfast Capital Management
New York
$1.03M – – –
JG
7
Jain Global
New York
$1.01M -$12.6K -1,209 -1%
WC
8
Wealthspring Capital
New York
$955K -$74K -7,100 -7%
SAMU
9
SONA Asset Management (US)
New York
$514K – – –
OAC
10
OMERS Administration Corp
Ontario, Canada
$512K – – –
Walleye Capital
11
Walleye Capital
New York
$512K – – –
HF
12
HRT Financial
New York
$512K +$14.4K +1,385 +3%
WCMNY
13
Westchester Capital Management (New York)
New York
$256K – – –
RAM
14
Readystate Asset Management
Illinois
$102K – – –
KC
15
Kryger Capital
United Kingdom
$31.7K +$32.1K +3,080 New
UBS Group
16
UBS Group
Switzerland
$5.34K +$1.62K +155 +43%
FIA
17
FNY Investment Advisers
New York
$1K -$7.11K -682 -87%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
18
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$10 -$10.4M -999,999 -100%
MF
19
Magnetar Financial
Illinois
– -$10.3M -1,000,000 Closed
MI
20
MMCAP International
Cayman Islands
– -$10.3M -1,000,000 Closed
MTCM
21
Mint Tower Capital Management
Netherlands
– -$7.73M -750,000 Closed
AIMCA
22
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
– -$5.67M -550,000 Closed
PC
23
Periscope Capital
Ontario, Canada
– -$5.16M -500,000 Closed
Millennium Management
24
Millennium Management
New York
– -$4.42M -429,000 Closed
AA
25
AQR Arbitrage
Connecticut
– -$3.91M -379,400 Closed
1
2

HCMAU Hedge Fund Activity: Q4 2025 in Review

18 of the 8,239 institutional investors tracked by Wall St. Rank reported a position in HCM III Acquisition Corp Units (HCMAU) for Q4 2025, worth a combined $19M — down 77% from $83.8M a quarter earlier.

Sellers outnumbered buyers: 20 funds closed out of HCMAU and 1 opened new positions — a net loss of 19 holders — while 4 trimmed existing stakes and 5 added.

The largest buyer was Clear Street, adding an estimated $686K. The largest seller was Healthcare of Ontario Pension Plan (HOOPP) Trust Fund, cutting an estimated $10.4M.

  • 18 institutional investors held HCM III Acquisition Corp Units (HCMAU) as of Q4 2025, down from 38 in Q3 2025.
  • Funds reported $19M of HCM III Acquisition Corp Units stock for Q4 2025, down 77% quarter-over-quarter.
  • 1 fund opened new HCM III Acquisition Corp Units positions in Q4 2025 and 20 closed out, a net change of -19 holders.
  • The largest HCM III Acquisition Corp Units buyer in Q4 2025 was Clear Street, an estimated $686K added.
  • The largest HCM III Acquisition Corp Units seller in Q4 2025 was Healthcare of Ontario Pension Plan (HOOPP) Trust Fund, an estimated $10.4M sold.

Based on aggregated 13F filings for Q4 2025.