Quantumsphere Acquisition Corp - QUMS
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MIZUHO SECURITIES USA LLC | History | New | 718,086 | 7,128 | 0.12% | — | 1 | +718,086 | New | Q4 2025 | Feb 09, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | History | Added to | 575,222 | 5,757 | 0.05% | 0.01% | 2 | +425,222 | 283.48% | Q4 2025 | Feb 02, 2026 |
| Karpus Management, Inc. | History | New | 494,350 | 4,948 | 0.15% | — | 3 | +494,350 | New | Q4 2025 | Feb 17, 2026 |
| Shaolin Capital Management LLC | History | New | 480,000 | 4,804 | 0.15% | — | 4 | +480,000 | New | Q4 2025 | Feb 17, 2026 |
| Clear Street Group Inc. | History | Added to | 439,628 | 4,403 | 0.02% | 0.01% | 5 | +220,172 | 100.33% | Q4 2025 | Feb 13, 2026 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | History | Reduced | 424,512 | 4,321 | 0.2% | 0.25% | 6 | -488 | -0.11% | Q4 2025 | Feb 17, 2026 |
| GLAZER CAPITAL, LLC | History | Added to | 424,153 | 4,246 | 0.11% | 0.14% | 7 | +3,611 | 0.86% | Q4 2025 | Feb 13, 2026 |
| D. E. Shaw & Co., Inc. | History | Added to | 409,860 | 4,102 | 0.0% | 0.0% | 8 | +284,860 | 227.89% | Q4 2025 | Feb 17, 2026 |
| Polar Asset Management Partners Inc. | History | New | 400,000 | 4,072 | 0.05% | — | 9 | +400,000 | New | Q4 2025 | Feb 17, 2026 |
| LINDEN ADVISORS LP | History | No change | 400,000 | 4,004 | 0.02% | 0.03% | 10 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Westchester Capital Management, LLC | History | Added to | 350,000 | 3,520 | 0.15% | 0.05% | 11 | +250,000 | 250.0% | Q4 2025 | Feb 13, 2026 |
| AQR Arbitrage LLC | History | No change | 322,660 | 3,229 | 0.07% | 0.08% | 12 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| BERKLEY W R CORP | History | Added to | 303,580 | 3,038 | 0.14% | 0.09% | 13 | +154,810 | 104.06% | Q4 2025 | Feb 13, 2026 |
| HGC Investment Management Inc. | History | No change | 300,000 | 3,003 | 0.64% | 0.74% | 14 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Hudson Bay Capital Management LP | History | No change | 235,000 | 2,352 | 0.01% | 0.01% | 15 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Reduced | 217,479 | 2,176 | 0.0% | 0.0% | 16 | -5,011 | -2.25% | Q4 2025 | Feb 17, 2026 |
| TORONTO DOMINION BANK | History | Reduced | 175,778 | 1,759 | 0.0% | 0.01% | 17 | -185,222 | -51.31% | Q4 2025 | Feb 17, 2026 |
| Cable Car Capital, LP | History | No change | 174,801 | 1,749 | 0.06% | 0.76% | 18 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| HEIGHTS CAPITAL MANAGEMENT, INC | History | No change | 150,000 | 1,501 | 0.54% | 0.43% | 19 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Radcliffe Capital Management, L.P. | History | No change | 150,000 | 1,501 | 0.08% | 0.09% | 20 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| PERISCOPE CAPITAL INC. | History | No change | 125,000 | 1,251 | 0.14% | 0.2% | 21 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | No change | 102,340 | 1,024 | 0.0% | 0.0% | 22 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| GABELLI & Co INVESTMENT ADVISERS, INC. | History | No change | 67,700 | 689 | 0.1% | 0.11% | 23 | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| GABELLI FUNDS LLC | History | New | 57,300 | 583 | 0.0% | — | 24 | +57,300 | New | Q4 2025 | Feb 05, 2026 |
| Schonfeld Strategic Advisors LLC | History | Reduced | 55,000 | 550 | 0.0% | 0.01% | 25 | -32,486 | -37.13% | Q4 2025 | Feb 17, 2026 |
| Warberg Asset Management LLC | History | No change | 41,421 | 414 | 0.05% | 0.07% | 26 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| HRT FINANCIAL LP | History | Added to | 31,089 | 316 | 0.0% | 0.0% | 27 | +1,104 | 3.68% | Q4 2025 | Feb 12, 2026 |
| Virtu Financial LLC | History | Added to | 24,783 | 248 | 0.01% | 0.01% | 28 | +9,849 | 65.95% | Q4 2025 | Feb 23, 2026 |
| Logan Stone Capital, LLC | History | New | 14,500 | 145 | 0.04% | — | 29 | +14,500 | New | Q4 2025 | Feb 17, 2026 |
| JPMORGAN CHASE & CO | History | No change | 10,000 | 101 | 0.0% | 0.0% | 30 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| UBS Group AG | History | New | 459 | 4 | 0.0% | — | 31 | +459 | New | Q4 2025 | Jan 29, 2026 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.26% | — | -600,000 | -100.0% | Q3 2025 | Nov 10, 2025 |
| Harraden Circle Investments, LLC | History | Closed out | 0 | 0 | — | 0.79% | — | -400,707 | -100.0% | Q3 2025 | Nov 13, 2025 |
| METEORA CAPITAL, LLC | History | Closed out | 0 | 0 | — | 0.25% | — | -229,999 | -100.0% | Q3 2025 | Nov 17, 2025 |
| StoneX Group Inc. | History | Closed out | 0 | 0 | — | 0.07% | — | -168,149 | -100.0% | Q3 2025 | Nov 14, 2025 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -100,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| TrueMark Investments, LLC | History | Closed out | 0 | 0 | — | 0.02% | — | -10,000 | -100.0% | Q3 2025 | Oct 30, 2025 |
| MORGAN STANLEY | History | New | 30 | 0 | — | — | — | +30 | New | Q4 2025 | Feb 13, 2026 |