Quartzsea Acquisition Corporati
Ownership
Ownership Structure
Who owns Quartzsea Acquisition Corporati (QSEA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 71.4% of the shares are freely tradable; institutional investors hold 71.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Karpus Management Inc | 22.27 | 2,256,805 | -0.3 | 03/31/2026 |
| Mizuho Securities USA Inc | 6.69 | 677,754 | +0.1 | 03/31/2026 |
| Wolverine Asset Management LLC | 5.92 | 599,522 | -0.5 | 03/31/2026 |
| RiverNorth Capital Management, LLC | 4.93 | 499,664 | +0.0 | 06/30/2026 |
| Mangrove Partners | 4.03 | 408,154 | +0.0 | 03/31/2026 |
| Berkley W R Corp | 4.00 | 405,549 | +27.7 | 03/31/2026 |
| Westchester Capital Management LLC | 3.62 | 366,605 | +0.0 | 03/31/2026 |
| Cnh Partners, LLC | 3.50 | 354,288 | -4.2 | 03/31/2026 |
| Polar Asset Management Partners | 3.45 | 350,000 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| The Merger Fund A | 4.98 | 504,953 | +78.3 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 25, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.