Stock
Quantumsphere Acquisition Co
Ticker not mapped · held by 24 managers
Reported value
$1.56M
Holders
24
+2 new · −2 exited
Holders’ est. mark
$186.3K
Price effect on 21 books still in the name
Largest holder
$248.5K
Harraden Circle Investments, LLC
Holder count by quarter
Who holds it
Notable only| Investor | Shares | Value | Est. mark | Change |
|---|---|---|---|---|
| Harraden Circle Investments, LLC | 993.9K | $248.5K | $39.7K | Added$39.7K |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 690.4K | $172.6K | $27.3K | Added$28.9K |
| TORONTO DOMINION BANK | 670.8K | $167.7K | $26.8K | Added$21.7K |
| Shaolin Capital Management LLC | 460K | $115K | $18.4K | Added$18.4K |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 424.5K | $106.1K | — | New |
| Polar Asset Management Partners Inc. | 400K | $100K | — | New |
| Linden Advisors LP | 400K | $90K | $2K | Added$2K |
| AQR Arbitrage LLC | 321K | $80.3K | $16K | Added$15.7K |
| HGC Investment Management Inc. | 300K | $75K | $12K | Added$12K |
| Clear Street Group Inc. | 224.4K | $56.1K | $8.95K | Added$7.93K |
| Cable Car Capital, LP | 174.8K | $43.7K | $6.97K | Added$6.97K |
| RLH Capital LLC | 184.9K | $40.7K | — | Held |
| Hudson Bay Capital Management LP | 150K | $37.5K | $5.98K | Added$5.99K |
| HEIGHTS CAPITAL MANAGEMENT, INC | 138.2K | $34.5K | $5.51K | Added$3.05K |
| WOLVERINE ASSET MANAGEMENT LLC | 135.2K | $33.8K | $5.39K | Added$2.29K |
| Radcliffe Capital Management, L.P. | 150K | $33K | $8 | Added$8 |
| D. E. Shaw & Co., Inc. | 125K | $31.3K | $4.99K | Added$4.99K |
| Periscope Capital Inc. | 125K | $27.5K | $1.24K | Added$1.24K |
| BOOTHBAY FUND MANAGEMENT, LLC | 100K | $25K | $3.99K | Added$3.99K |
| BNP PARIBAS FINANCIAL MARKETS | 102.3K | $22.5K | $1.02K | Added$1.02K |
| Schonfeld Strategic Advisors LLC | 54.5K | $12K | $542 | Added$521 |
| BERKLEY W R CORP | 35.1K | $7.73K | $349 | Added$349 |
| UBS Group AG | 16K | $2.56K | −$802 | Cut−$818 |
| Glazer Capital, LLC | 420.5K | $67 | −$21 | Cut−$21 |
Who left
Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.