QUMS
Quantumsphere Acquisition Corp (QUMS, QUMSR, QUMSU
NASDAQ · Financial Services · Shell Companies · US
$10.33
+0.10%Institutional positioning
13F filings over the trailing two quarters
New 6Increased 6Reduced 7Sold out 29
| Filer | Action | Shares | Filed |
|---|---|---|---|
| MIZUHO SECURITIES USA LLC | Increased | 731,984 | May 11, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | Increased | 603,984 | May 4, 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 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | New Position | 424,512 | May 15, 2026 |
| GLAZER CAPITAL, LLC | Reduced | 423,019 | May 14, 2026 |
| D. E. SHAW & CO., INC. | Unchanged | 409,860 | May 15, 2026 |
| LINDEN ADVISORS LP | Unchanged | 400,000 | May 15, 2026 |
| POLAR ASSET MANAGEMENT PARTNERS INC. | New Position | 400,000 | May 15, 2026 |
| AQR ARBITRAGE LLC | Reduced | 308,294 | May 15, 2026 |
| HGC INVESTMENT MANAGEMENT INC. | Unchanged | 300,000 | May 15, 2026 |
| TORONTO DOMINION BANK | Increased | 265,600 | May 15, 2026 |
| WESTCHESTER CAPITAL MANAGEMENT, LLC | Unchanged | 250,000 | May 15, 2026 |
| HUDSON BAY CAPITAL MANAGEMENT LP | Unchanged | 235,000 | May 13, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings