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Quartzsea Acquisition Corp

CUSIP: G7314B104 | 31 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
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Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/AMizuho Financial Group Inc993,2968.0%New 5%+ stakeJun 30, 2026Not yet in a 13F
13GBerkley Insurance Company900,0008.9%New 5%+ stake

Institutional Holders — Q3 2026

Wolverine Asset Management LLC486,294
0.0% of portfolio›$5.2M
Warberg Asset Management LLC22,916
0.0% of portfolio›$245.2K
StyleTurnoverLocationFiled
Wolverine Asset Management LLC
486,294$5.2M0.0%Deep ValueVery HighChicago, IL2026-11-02
Warberg Asset Management LLC
22,916$245.2K0.0%YieldHighWinnetka, IL2026-11-02
Jun 30, 2026
No 13F filer matched
13G/AWolverine Asset Management, LLC495,4884.9%Newly reportedJun 30, 2026No 13F filer matched
13G/AMizuho Financial Group Inc993,296
8.0% of class · Jun 30, 2026New 5%+ stake
Not yet in a 13F
13GBerkley Insurance Company900,000
8.9% of class · Jun 30, 2026New 5%+ stake
No 13F filer matched
13G/AWolverine Asset Management, LLC495,488
4.9% of class · Jun 30, 2026Newly reported
No 13F filer matched