17 institutions reported holding $1.0M of Quartzsea Acquisition Corp (QSEAR) in SEC 13F filings for 2026-03-31. Largest institutional holders: Harraden Circle Investments, LLC ($407,688), Shaolin Capital Management LLC ($91,761), RIVERNORTH CAPITAL MANAGEMENT, LLC ($79,980), TORONTO DOMINION BANK ($68,136), MANGROVE PARTNERS IM, LLC ($65,305). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Harraden Circle Investments, LLC | $407,688 | 2.5M | Hold |
| 2 | Shaolin Capital Management LLC | $91,761 | 573,507 | Trimmed |
| 3 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $79,980 | 499,872 | Hold |
| 4 | TORONTO DOMINION BANK | $68,136 | 425,851 | Trimmed |
| 5 | MANGROVE PARTNERS IM, LLC | $65,305 | 408,154 | Hold |
| 6 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | $64,000 | 400,000 | Hold |
| 7 | AQR Arbitrage LLC | $59,194 | 369,960 | Trimmed |
| 8 | Polar Asset Management Partners Inc. | $56,000 | 350,000 | Hold |
| 9 | Hudson Bay Capital Management LP | $28,000 | 175,000 | Hold |
| 10 | D. E. Shaw & Co., Inc. | $27,200 | 170,000 | Hold |
| 11 | Linden Advisors LP | $24,080 | 175,000 | Hold |
| 12 | Clear Street Group Inc. | $21,920 | 137,000 | Hold |
| 13 | WOLVERINE ASSET MANAGEMENT LLC | $18,699 | 116,870 | Trimmed |
| 14 | BNP PARIBAS FINANCIAL MARKETS | $16,394 | 119,661 | Hold |
| 15 | GLAZER CAPITAL, LLC | $9,000 | 79,338 | Trimmed |
| 16 | MIZUHO SECURITIES USA LLC | $2,047 | 10,235 | New |
| 17 | Alpine Global Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31