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QUMS

Quantumsphere Acquisition Corp
QUMS

25 hedge funds and large institutions have $65.7M invested in Quantumsphere Acquisition Corp in 2025 Q4 according to their latest regulatory filings, with 22 funds opening new positions, 2 increasing their positions, reducing their positions, and 1 closing their positions.

New
Increased
Maintained
Reduced
Closed

2,100% more first-time investments, than exits

New positions opened: 22 | Existing positions closed: 1

675% more capital invested

Capital invested by funds: $8.48M → $65.7M (+$57.2M)

525% more funds holding

Funds holding: 4 → 25 (+21)

57.59% more ownership

Funds ownership: 0% → 57.59% (+58%)

Holders
25
Holders Change
+21
Holders Change %
+525%
% of All Funds
0.3%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
22
Increased
2
Reduced
–
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
MSU
Mizuho Securities USA
New York
+$7.16M
2
WAM
Wolverine Asset Management
Illinois
+$5.74M
3
KIM
Karpus Investment Management
New York
+$4.93M
4
SCM
Shaolin Capital Management
Florida
+$4.79M
5
GCL
Glazer Capital LLC
New York
+$4.23M

Top Sellers

Rank Fund Capital Flow
1
HCM
Highbridge Capital Management
New York
-$5.98M

QUMS Hedge Fund Activity: Q4 2025 in Review

25 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in Quantumsphere Acquisition Corp (QUMS) for Q4 2025, worth a combined $65.7M — up 675% from $8.48M a quarter earlier.

Buyers outnumbered sellers: 22 funds opened new QUMS positions and 1 closed out — a net gain of 21 holders — while 2 added to existing stakes and 0 trimmed.

The largest buyer was Mizuho Securities USA, opening a new position worth an estimated $7.16M. The largest seller was Highbridge Capital Management, exiting entirely with an estimated $5.98M sold.

  • 25 institutional investors held Quantumsphere Acquisition Corp (QUMS) as of Q4 2025, up from 4 in Q3 2025.
  • Funds reported $65.7M of Quantumsphere Acquisition Corp stock for Q4 2025, up 675% quarter-over-quarter.
  • 22 funds opened new Quantumsphere Acquisition Corp positions in Q4 2025 and 1 closed out, a net change of +21 holders.
  • The largest Quantumsphere Acquisition Corp buyer in Q4 2025 was Mizuho Securities USA, an estimated $7.16M added.
  • The largest Quantumsphere Acquisition Corp seller in Q4 2025 was Highbridge Capital Management, an estimated $5.98M sold.

Based on aggregated 13F filings for Q4 2025.