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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.

New
Increased
Maintained
Reduced
Closed

400% more first-time investments, than exits

New positions opened: 5 | Existing positions closed: 1

16% more capital invested

Capital invested by funds: $65.7M → $76.4M (+$10.7M)

16% more funds holding

Funds holding: 25 → 29 (+4)

8.65% more ownership

Funds ownership: 57.59% → 66.24% (+8.7%)

14% less repeat investments, than reductions

Existing positions increased: 6 | Existing positions reduced: 7

Holders
29
Holders Change
+4
Holders Change %
+16%
% of All Funds
0.36%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
5
Increased
6
Reduced
7
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
RCM
Rivernorth Capital Management
Florida
+$4.28M
2
PAMP
Polar Asset Management Partners
Ontario, Canada
+$4.03M
3
WRBC
W.R. Berkley Corp
Connecticut
+$2.07M
4
HCM
Highbridge Capital Management
New York
+$1.22M
5
CA
Crossingbridge Advisors
New York
+$1.09M

Top Sellers

1
CS
Clear Street
New York
-$2.52M
2
Two Sigma Investments
Two Sigma Investments
New York
-$1.84M
3
WAM
Warberg Asset Management
Illinois
-$415K
4
PC
Periscope Capital
Ontario, Canada
-$252K
5
AA
AQR Arbitrage
Connecticut
-$145K
Name Holding Trade Value Shares
Change 		Change in
Stake
Two Sigma Investments
26
Two Sigma Investments
New York
$357K -$1.84M -182,188 -84%
VF
27
Virtu Financial
New York
$226K -$25K -2,480 -10%
LSC
28
Logan Stone Capital
Illinois
$147K – – –
Morgan Stanley
29
Morgan Stanley
New York
$638 +$333 +33 +110%
WAM
30
Warberg Asset Management
Illinois
– -$415K -41,421 Closed
1
2