Quartzsea AcquisitionQSEARPreferred / convertible
13F holders, Q1 2026 (March 31)16holders +1
2new positions
1sold out
1famous investor
$0.16avg. 13F price*
At the end of Q1 2026, 16 institutions reported holding Quartzsea Acquisition Corp. (QSEAR) in their 13F filings, up 1 from Q4 2025. 2 opened new positions and 1 sold out. The largest holders were Harraden Circle Investments, LLC ($408K), Shaolin Capital Management LLC ($92K) and Rivernorth Capital Management, LLC ($80K). One famous investor held it David E. Shaw ( of D. E. Shaw & Co.'s portfolio).
- Company
- Quartzsea Acquisition Corp.
- CUSIP
- G7314B120
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $11K |
| Exits | 1 | $6K |
All 13F filers, Q4 2025 → Q1 2026: 89,573 shares bought and 79,738 shares sold, net +9,835 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 16 holders
| Harraden Circle Investments, LLC | — | No change | 2,548,048 | $408K |
| Shaolin Capital Management LLC | — | Reduce -0.3% | 573,507 | $92K |
| Rivernorth Capital Management, LLC | — | No change | 499,872 | $80K |
| Toronto Dominion Bank | — | Reduce -7.6% | 425,851 | $68K |
| Mangrove Partners Im, LLC | — | No change | 408,154 | $65K |
| Highbridge Capital Management LLC | — | No change | 400,000 | $64K |
| AQR Arbitrage LLC | — | Reduce -2.7% | 369,960 | $59K |
| Polar Asset Management Partners Inc. | — | No change | 350,000 | $56K |
| Hudson Bay Capital Management LP | — | No change | 175,000 | $28K |
| D. E. Shaw & Co. | — | No change | 170,000 | $27K |
| Linden Advisors LP | — | No change | 175,000 | $24K |
| Clear Street Group Inc. | — | No change | 137,000 | $22K |
| Wolverine Asset Management LLC | — | Reduce -1.3% | 116,870 | $19K |
| BNP Paribas Financial Markets | — | No change | 119,661 | $16K |
| Glazer Capital, LLC | — | New | 79,338 | $9K |
| Mizuho Securities USA LLC | — | New | 10,235 | $2K |
"% of holder's portfolio" is QSEAR's weight in each manager's 13F, not the share of Quartzsea Acquisition Corp. the manager owns.