We are live on ! Find out more
QUMS

Quantumsphere Acquisition Corp
QUMS

29 hedge funds and large institutions have $76.4M invested in Quantumsphere Acquisition Corp in 2026 Q1 according to their latest regulatory filings, with 5 funds opening new positions, 6 increasing their positions, 7 reducing their positions, and 1 closing their positions.

Upgrade to unlock
New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding: →

more ownership

Funds ownership: →

14% less repeat investments, than reductions

Existing positions increased: 6 | Existing positions reduced: 7

Holders
29
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
–
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
–
Puts
–
Net Calls
Net Calls Change

Top Buyers

1
+$4.28M
2
+$4.03M
3
+$2.07M
4
HCM
Highbridge Capital Management
New York
+$1.22M
5
CA
Crossingbridge Advisors
New York
+$1.09M

Top Sellers

1
-$2.52M
2
-$1.84M
3
-$415K
4
PC
Periscope Capital
Ontario, Canada
-$252K
5
AA
AQR Arbitrage
Connecticut
-$145K
Name Holding Trade Value Shares
Change 		Change in
Stake
MSU
1
Mizuho Securities USA
New York
$7.36M
WAM
2
Wolverine Asset Management
Illinois
$6.11M
WRBC
3
W.R. Berkley Corp
Connecticut
$5.15M
KIM
4
Karpus Investment Management
New York
$5M
SCM
5
Shaolin Capital Management
Florida
$4.86M
RCM
6
Rivernorth Capital Management
Florida
$4.3M
GCL
7
Glazer Capital LLC
New York
$4.28M
D.E. Shaw & Co
8
D.E. Shaw & Co
New York
$4.15M
LA
9
Linden Advisors
New York
$4.05M
PAMP
10
Polar Asset Management Partners
Ontario, Canada
$4.05M
AA
11
AQR Arbitrage
Connecticut
$3.12M
HIM
12
HGC Investment Management
Ontario, Canada
$3.04M
Toronto Dominion Bank
13
Toronto Dominion Bank
Ontario, Canada
$2.69M
WCMNY
14
Westchester Capital Management (New York)
New York
$2.53M
Hudson Bay Capital Management
15
Hudson Bay Capital Management
Connecticut
$2.38M
CS
16
Clear Street
New York
$1.77M
CCC
17
Cable Car Capital
California
$1.77M
HCM
18
Heights Capital Management
California
$1.52M
RCM
19
Radcliffe Capital Management
Pennsylvania
$1.52M
HCM
20
Highbridge Capital Management
New York
$1.23M
BNP Paribas Financial Markets
21
BNP Paribas Financial Markets
France
$1.16M
CA
22
Crossingbridge Advisors
New York
$1.09M
PC
23
Periscope Capital
Ontario, Canada
$1.01M
RC
24
RLH Capital
New York
$1.01M
SSA
25
Schonfeld Strategic Advisors
New York
$557K
1
2