Quantumsphere Acquisition Corp Rights
QUMSR
23 hedge funds and large institutions have $1.24M invested in Quantumsphere Acquisition Corp Rights in 2025 Q4 according to their latest regulatory filings, with 19 funds opening new positions, 2 increasing their positions, 2 reducing their positions, and 1 closing their positions.
1,800% more first-time investments, than exits
New positions opened: 19 | Existing positions closed: 1
437% more capital invested
Capital invested by funds: $230K → $1.24M (+$1.01M)
360% more funds holding
Funds holding: 5 → 23 (+18)
0% more repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 2
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HCI
Harraden Circle Investments
New York
|
+$215K |
| 2 |
Toronto Dominion Bank
Toronto, Ontario,
Ontario, Canada
|
+$168K |
| 3 |
SCM
Shaolin Capital Management
Miami,
Florida
|
+$120K |
| 4 |
GCL
Glazer Capital LLC
New York
|
+$110K |
| 5 |
LA
Linden Advisors
New York
|
+$104K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Hudson Bay Capital Management
Stamford,
Connecticut
|
-$22.2K |
| 2 |
MSU
Mizuho Securities USA
New York
|
-$6.14K |
| 3 |
HCM
Highbridge Capital Management
New York
|
-$4.16K |
QUMSR Hedge Fund Activity: Q4 2025 in Review
23 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in Quantumsphere Acquisition Corp Rights (QUMSR) for Q4 2025, worth a combined $1.24M — up 437% from $230K a quarter earlier.
Buyers outnumbered sellers: 19 funds opened new QUMSR positions and 1 closed out — a net gain of 18 holders — while 2 added to existing stakes and 2 trimmed.
The largest buyer was Harraden Circle Investments, adding an estimated $215K. The largest seller was Hudson Bay Capital Management, cutting an estimated $22.2K.
- 23 institutional investors held Quantumsphere Acquisition Corp Rights (QUMSR) as of Q4 2025, up from 5 in Q3 2025.
- Funds reported $1.24M of Quantumsphere Acquisition Corp Rights stock for Q4 2025, up 437% quarter-over-quarter.
- 19 funds opened new Quantumsphere Acquisition Corp Rights positions in Q4 2025 and 1 closed out, a net change of +18 holders.
- The largest Quantumsphere Acquisition Corp Rights buyer in Q4 2025 was Harraden Circle Investments, an estimated $215K added.
- The largest Quantumsphere Acquisition Corp Rights seller in Q4 2025 was Hudson Bay Capital Management, an estimated $22.2K sold.
Based on aggregated 13F filings for Q4 2025.