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HCMAU

HCM III Acquisition Corp Units
HCMAU

38 hedge funds and large institutions have $83.8M invested in HCM III Acquisition Corp Units in 2025 Q3 according to their latest regulatory filings, with 38 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

36.95% more ownership

Funds ownership: 0% → 36.95% (+37%)

Holders
38
Holders Change
+38
Holders Change %
–
% of All Funds
0.5%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
38
Increased
–
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
+$10.2M
2
MF
Magnetar Financial
Illinois
+$10.2M
3
MI
MMCAP International
Cayman Islands
+$10.2M
4
MTCM
Mint Tower Capital Management
Netherlands
+$7.63M
5
AIMCA
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
+$5.6M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
1
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$10.3M +$10.2M +1,000,000 New
MF
2
Magnetar Financial
Illinois
$10.3M +$10.2M +1,000,000 New
MI
3
MMCAP International
Cayman Islands
$10.3M +$10.2M +1,000,000 New
MTCM
4
Mint Tower Capital Management
Netherlands
$7.73M +$7.63M +750,000 New
AIMCA
5
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$5.67M +$5.6M +550,000 New
PC
6
Periscope Capital
Ontario, Canada
$5.16M +$5.09M +500,000 New
PAMP
7
Polar Asset Management Partners
Ontario, Canada
$5.16M +$5.09M +500,000 New
Millennium Management
8
Millennium Management
New York
$4.42M +$4.36M +429,000 New
AA
9
AQR Arbitrage
Connecticut
$3.91M +$3.86M +379,400 New
Toronto Dominion Bank
10
Toronto Dominion Bank
Ontario, Canada
$3.61M +$3.56M +350,000 New
RCM
11
Rivernorth Capital Management
Florida
$2.06M +$2.03M +200,000 New
WCA
12
Waratah Capital Advisors
Ontario, Canada
$1.48M +$1.46M +143,164 New
BNP Paribas Financial Markets
13
BNP Paribas Financial Markets
France
$1.24M +$1.23M +120,600 New
SCM
14
Shaolin Capital Management
Florida
$1.24M +$1.23M +120,417 New
HIM
15
HGC Investment Management
Ontario, Canada
$1.03M +$1.02M +100,000 New
JG
16
Jain Global
New York
$1.03M +$1.02M +100,000 New
MCM
17
Moore Capital Management
New York
$1.03M +$1.02M +100,000 New
SCM
18
Steadfast Capital Management
New York
$1.03M +$1.02M +100,000 New
WC
19
Wealthspring Capital
New York
$1.03M +$1.02M +100,000 New
CS
20
Clear Street
New York
$628K +$620K +60,897 New
DCM
21
Driehaus Capital Management
Illinois
$516K +$509K +50,000 New
GAM
22
Gritstone Asset Management
Maryland
$516K +$509K +50,000 New
OAC
23
OMERS Administration Corp
Ontario, Canada
$516K +$509K +50,000 New
SAMU
24
SONA Asset Management (US)
New York
$516K +$509K +50,000 New
Walleye Capital
25
Walleye Capital
New York
$516K +$509K +50,000 New
1
2

HCMAU Hedge Fund Activity: Q3 2025 in Review

38 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in HCM III Acquisition Corp Units (HCMAU) for Q3 2025, worth a combined $83.8M.

Buyers outnumbered sellers: 38 funds opened new HCMAU positions and 0 closed out — a net gain of 38 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Healthcare of Ontario Pension Plan (HOOPP) Trust Fund, opening a new position worth an estimated $10.2M.

  • 38 institutional investors held HCM III Acquisition Corp Units (HCMAU) as of Q3 2025, up from 0 in Q2 2025.
  • Funds reported $83.8M of HCM III Acquisition Corp Units stock for Q3 2025.
  • 38 funds opened new HCM III Acquisition Corp Units positions in Q3 2025 and 0 closed out, a net change of +38 holders.
  • The largest HCM III Acquisition Corp Units buyer in Q3 2025 was Healthcare of Ontario Pension Plan (HOOPP) Trust Fund, an estimated $10.2M added.

Based on aggregated 13F filings for Q3 2025.