QUMS
Quantumsphere Acquisition Corp (QUMS, QUMSR, QUMSU
NASDAQ · Financial Services · Shell Companies · US
$10.33
+0.00%Institutional positioning
13F filings over the trailing two quarters
New 7Increased 12Reduced 17Sold out 3
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BERKLEY W R CORP | Increased | 881,402 | Aug 14, 2026 |
| MIZUHO SECURITIES USA LLC | Increased | 757,023 | Jul 28, 2026 |
| MIZUHO SECURITIES USA LLC | Increased | 731,984 | May 11, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | Increased | 603,984 | May 4, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | Reduced | 602,984 | Aug 10, 2026 |
| BERKLEY W R CORP | Increased | 508,540 | May 15, 2026 |
| KARPUS MANAGEMENT, INC. | Reduced | 493,875 | May 14, 2026 |
| SHAOLIN CAPITAL MANAGEMENT LLC | Unchanged | 480,000 | May 15, 2026 |
| Karpus Management, Inc. | Reduced | 469,875 | Aug 14, 2026 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | New Position | 424,512 | May 15, 2026 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | Reduced | 424,124 | Aug 14, 2026 |
| GLAZER CAPITAL, LLC | Reduced | 423,019 | May 14, 2026 |
| D. E. SHAW & CO., INC. | Unchanged | 409,860 | May 15, 2026 |
| D. E. Shaw & Co., Inc. | Unchanged | 409,860 | Aug 14, 2026 |
| Shaolin Capital Management LLC | Reduced | 405,761 | Aug 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings