Institutional Ownership
Quantumsphere Acquisition Co
CUSIP G7387B122UNIT 07/30/2030Q1 2026
13D / 13G Filings
0
Schedule 13D/13G on record
Beneficial Filers
0
Distinct reporting persons
Largest Stake
—
Max % of class reported
Institutional Holders
8
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
Schedule 13D (activist) & 13G (passive) 5%+ ownership filings
No 13D/13G filings on record yet
Schedule 13D/13G beneficial-ownership filings from 2020–present are ingested from SEC EDGAR. Coverage expands as the backfill and daily crawler run.
Top Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Westchester Capital Management, LLC | 100.0K | $1.01M |
| 2 | Gabelli & Co Investment Advisers, Inc. | 67.7K | $698.7K |
| 3 | Gabelli Funds LLC | 57.3K | $591.3K |
| 4 | Clear Street Group Inc. | 22.5K | $231.8K |
| 5 | Jpmorgan Chase & Co | 10.0K | $101.5K |
| 6 | Ubs Group AG | 464 | $4.7K |
| 7 | Hrt Financial LP | 30.1K | $304 |
| 8 | Glazer Capital, LLC | 219 | $2 |