Quartzsea Acquisition Corp
QSEA- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002047455
No open-market purchases or sales by Quartzsea Acquisition Corp insiders were filed in the last 90 days; 21 institutions reported holding it in 13F filings for Q2 2026, worth $70.9M in total; no superinvestor holds it.
Q2 2026 vs. Q1 2026
How the institutions holding Quartzsea Acquisition Corp changed between Q1 2026 and Q2 2026.
All holders in Q2 2026All holders in Q1 2026
| Measure | Q1 2026 | Q2 2026 | Change |
|---|---|---|---|
| Holders | 26 | 21 | −5 |
| Shares | 7.53M | 6.74M | −789.4K (−10.5%) |
| Value | $78.0M | $70.9M | −$7.12M (−9.1%) |
New holders (2)
Institutions that held Quartzsea Acquisition Corp at the end of Q2 2026 but not at the end of Q1 2026.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Clear Street Group Inc. | 128,529 | $1.35M | 0.00% |
| Citadel Advisors LLC | 10,948 | $115.2K | 0.00% |
Sold out (7)
Institutions that held Quartzsea Acquisition Corp at the end of Q1 2026 and filed for Q2 2026 without it.
| Institution | Shares, Q1 2026 | Value, Q1 2026 |
|---|---|---|
| Mangrove Partners | 408,154 | $4.23M |
| Linden Advisors LP | 175,000 | $1.82M |
| Crossingbridge Advisors, LLC | 140,189 | $1.46M |
| Two Sigma Investments, LP | 59,288 | $614.8K |
| Logan Stone Capital, LLC | 51,553 | $534.6K |
| Radcliffe Capital Management, L.P. | 26,553 | $275.4K |
| Wellspring Financial Advisors, LLC | 17,700 | $183.5K |