Who Owns QUARTZSEA ACQUISITION CORP (QSEA)? -- Institutional Holders (2026-06-30)
28 institutions reported holding $77.8M of QUARTZSEA ACQUISITION CORP (QSEA) in SEC 13F filings for 2026-06-30. Largest institutional holders: MIZUHO SECURITIES USA LLC ($17.3M), BERKLEY W R CORP ($11.5M), Karpus Management, Inc. ($10.3M), Westchester Capital Management, LLC ($6.4M), RIVERNORTH CAPITAL MANAGEMENT, LLC ($5.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | MIZUHO SECURITIES USA LLC | $17.3M | 1.7M | Added |
| 2 | BERKLEY W R CORP | $11.5M | 1.1M | Added |
| 3 | Karpus Management, Inc. | $10.3M | 974,765 | Trimmed |
| 4 | Westchester Capital Management, LLC | $6.4M | 611,605 | Added |
| 5 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $5.3M | 499,664 | Trimmed |
| 6 | WOLVERINE ASSET MANAGEMENT LLC | $5.2M | 495,488 | Trimmed |
| 7 | Polar Asset Management Partners Inc. | $3.9M | 375,000 | Added |
| 8 | AQR Arbitrage LLC | $3.7M | 356,213 | Added |
| 9 | RLH Capital LLC | $2.7M | 252,439 | Added |
| 10 | Hudson Bay Capital Management LP | $1.8M | 175,159 | Added |
| 11 | D. E. Shaw & Co., Inc. | $1.8M | 171,612 | Added |
| 12 | TORONTO DOMINION BANK | $1.6M | 150,000 | Trimmed |
| 13 | Clear Street Group Inc. | $1.4M | 128,529 | New |
| 14 | GLAZER CAPITAL, LLC | $1.3M | 126,887 | Trimmed |
| 15 | GOLDMAN SACHS GROUP INC | $1.3M | 119,661 | Hold |
| 16 | Shaolin Capital Management LLC | $1.2M | 114,840 | Trimmed |
| 17 | Dakota Wealth Management | $523,476 | 49,760 | Trimmed |
| 18 | Warberg Asset Management LLC | $241,076 | 22,916 | Added |
| 19 | BNP PARIBAS FINANCIAL MARKETS | $178,703 | 16,987 | Hold |
| 20 | CITADEL ADVISORS LLC | $115,173 | 10,948 | New |
| 21 | MORGAN STANLEY | $642 | 61 | Trimmed |
| 22 | TWO SIGMA INVESTMENTS, LP | $0 | 0 | Exited |
| 23 | Radcliffe Capital Management, L.P. | $0 | 0 | Exited |
| 24 | Linden Advisors LP | $0 | 0 | Exited |
| 25 | MANGROVE PARTNERS IM, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30