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. 69.1% of the shares are freely tradable; institutional investors hold 71.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Mizuho Securities USA Inc | 16.49 | 1,671,050 | +146.6 | 06/30/2026 |
| Berkley W R Corp | 10.80 | 1,094,190 | +169.8 | 06/30/2026 |
| Karpus Management Inc | 9.62 | 974,765 | -56.8 | 06/30/2026 |
| Westchester Capital Management LLC | 6.03 | 611,605 | +66.8 | 06/30/2026 |
| RiverNorth Capital Management, LLC | 4.93 | 499,664 | +0.0 | 06/30/2026 |
| Wolverine Asset Management LLC | 4.89 | 495,488 | -17.4 | 06/30/2026 |
| Polar Asset Management Partners | 3.70 | 375,000 | +7.1 | 06/30/2026 |
| Cnh Partners, LLC | 3.51 | 356,213 | +0.5 | 06/30/2026 |
| RLH Capital LLC | 2.49 | 252,439 | +510.7 | 06/30/2026 |
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: November 13, 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.