Quantumsphere Acquisition Corp Units
QUMSU
30 hedge funds and large institutions have $56.7M invested in Quantumsphere Acquisition Corp Units in 2025 Q3 according to their latest regulatory filings, with 30 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.
49.08% more ownership
Funds ownership: 0% → 49.08% (+49%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
+$4.27M |
| 2 |
GCL
Glazer Capital LLC
New York
|
+$4.23M |
| 3 |
HCI
Harraden Circle Investments
New York
|
+$4.03M |
| 4 |
LA
Linden Advisors
New York
|
+$4.02M |
| 5 |
PAMP
Polar Asset Management Partners
Toronto,
Ontario, Canada
|
+$4.02M |
Top Sellers
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
GF
26
Gabelli Funds
Rye,
New York
| $580K | +$576K | +57,300 | New |
|
|
WAM
27
Warberg Asset Management
Winnetka,
Illinois
| $420K | +$416K | +41,421 | New |
|
|
HF
28
HRT Financial
New York
| $303K | +$301K | +29,985 | New |
|
29
JP Morgan Chase
New York
| $101K | +$100K | +10,000 | New |
|
|
TI
30
TrueMark Investments
Chicago,
Illinois
| $101K | +$100K | +10,000 | New |
|
QUMSU Hedge Fund Activity: Q3 2025 in Review
30 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Quantumsphere Acquisition Corp Units (QUMSU) for Q3 2025, worth a combined $56.7M.
Buyers outnumbered sellers: 30 funds opened new QUMSU positions and 0 closed out — a net gain of 30 holders — while 0 added to existing stakes and 0 trimmed.
The largest buyer was Rivernorth Capital Management, opening a new position worth an estimated $4.27M.
- 30 institutional investors held Quantumsphere Acquisition Corp Units (QUMSU) as of Q3 2025, up from 0 in Q2 2025.
- Funds reported $56.7M of Quantumsphere Acquisition Corp Units stock for Q3 2025.
- 30 funds opened new Quantumsphere Acquisition Corp Units positions in Q3 2025 and 0 closed out, a net change of +30 holders.
- The largest Quantumsphere Acquisition Corp Units buyer in Q3 2025 was Rivernorth Capital Management, an estimated $4.27M added.
Based on aggregated 13F filings for Q3 2025.