Quantumsphere Acquisition Corp. · NASDAQ:QUMS
Quantumsphere Acquisition Corp. shareholders
As of Jun 30, 2026, 27 institutions reported holding Quantumsphere Acquisition Corp. Largest: Mizuho Securities USA LLC, Berkley W R Corp and Wolverine Asset Management LLC. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Quantumsphere Acquisition Corp. | Change | Filed |
|---|---|---|---|---|
| Mizuho Securities USA LLC | 1.49M | +757K | Jul 28, 2026 | |
| Berkley W R Corp | 881K | +373K | Aug 24, 2026 | |
| Wolverine Asset Management LLC | 603K | −1,000 | Aug 10, 2026 | |
| Karpus Management, Inc. | 470K | −24,000 | Aug 14, 2026 | |
| Rivernorth Capital Management, LLC | 424K | −388 | Aug 14, 2026 | |
| D. E. Shaw & Co., Inc. | 410K | no change | Aug 14, 2026 | |
| Shaolin Capital Management LLC | 406K | −74,239 | Aug 14, 2026 | |
| Glazer Capital, LLC | 400K | −22,930 | Aug 17, 2026 | |
| Linden Advisors LP | 400K | no change | Aug 14, 2026 | |
| Polar Asset Management Partners Inc. | 400K | no change | Aug 14, 2026 |