Quantumsphere AcquisitionQUMS
13F holders, Q3 2025 (September 30)4holders
$9.96avg. 13F price*
At the end of Q3 2025, 4 institutions reported holding Quantumsphere Acquisition Co. (QUMS) in their 13F filings. The largest holders were Highbridge Capital Management LLC ($6.0M), Hudson Bay Capital Management LP ($2.3M) and Virtu Financial LLC ($149K).
- Company
- Quantumsphere Acquisition Co.
- CUSIP
- G7387B106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $8.5M |
| Exits | 0 | $0 |
Ownership 4 holders
| Highbridge Capital Management LLC | 0.86% | New | 600,000 | $6.0M |
| Hudson Bay Capital Management LP | 0.02% | New | 235,000 | $2.3M |
| Virtu Financial LLC | 0.01% | New | 14,934 | $149K |
| Clear Street Group Inc. | 0.00% | — | 1,399 | $14K |
"% of holder's portfolio" is QUMS's weight in each manager's 13F, not the share of Quantumsphere Acquisition Co. the manager owns.