Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2025 to Q3 2025

Type / Class
Equity / Ordinary Shares, par value $0.0001 per share
Symbol
QSEA on Nasdaq
Shares outstanding
11,416,113
Price per share
$10.24
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
7,465,732
Total reported value
$74,303,640
% of total 13F portfolios
0%
Share change
+533,982
Value change
+$5,303,888
Number of holders
25
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Blue Jay Investment LLC 27% 3,129,900 Blue Jay Investment LLC 19 Mar 2025
Karpus Management, Inc. 21% $23,640,374 2,368,775 KARPUS MANAGEMENT, INC. 30 May 2025
WOLVERINE ASSET MANAGEMENT LLC 5.1% $5,903,500 584,505 WOLVERINE ASSET MANAGEMENT LLC 30 Sep 2025
Feis Equities LLC 4.2% 484,963 Feis Equities LLC 22 May 2025

As of 30 Sep 2025, 25 institutional investors reported holding 7,465,732 shares of Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA). This represents 65% of the company’s total 11,416,113 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA) together control 65% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Karpus Management, Inc. 20% 2,276,380 -1% 0.73% $23,059,729
MIZUHO SECURITIES USA LLC 5.6% 641,777 +40% 0.13% $6,431,588
WOLVERINE ASSET MANAGEMENT LLC 5.1% 584,505 +9.6% 0.09% $5,921,035
MANGROVE PARTNERS IM, LLC 3.6% 408,154 0% 0.31% $4,134,600
RIVERNORTH CAPITAL MANAGEMENT, LLC 3.5% 397,500 0.23% $4,026,675
AQR Arbitrage LLC 3.2% 369,960 -2% 0.1% $3,755,094
Westchester Capital Management, LLC 3.2% 366,605 0% 0.19% $3,721,041
Polar Asset Management Partners Inc. 3.1% 350,000 0% 0.07% $3,545,500
BERKLEY W R CORP 2.5% 288,603 +93% 0.19% $2,923,548
TORONTO DOMINION BANK 2.3% 266,975 -4.7% 0.01% $2,704,457
TWO SIGMA INVESTMENTS, LP 1.6% 184,128 -29% 0% $1,865,217
Hudson Bay Capital Management LP 1.5% 175,000 0% 0.01% $1,776,250
Linden Advisors LP 1.5% 175,000 0% 0.01% $1,776,250
Shaolin Capital Management LLC 1.5% 175,000 -22% 0.08% $1,772,750
D. E. Shaw & Co., Inc. 1.5% 170,012 0% 0% $1,725,622
GLAZER CAPITAL, LLC 1.4% 163,753 -0.76% 0.06% $1,659,000
Crossingbridge Advisors, LLC 1.2% 140,189 +7.8% 0.07% $140,189
GOLDMAN SACHS GROUP INC 1% 119,661 0% 0% $1,212,166
Dakota Wealth Management 0.61% 69,500 0% 0.01% $704,035
Logan Stone Capital, LLC 0.44% 50,053 0% 0.23% $507,037
Radcliffe Capital Management, L.P. 0.23% 26,553 0% 0.02% $268,982
Clear Street Group Inc. 0.22% 24,693 0% 0% $250,140
Warberg Asset Management LLC 0.21% 24,000 0% 0.07% $243,120
Wellspring Financial Advisors, LLC 0.16% 17,700 0.02% $179,301
MORGAN STANLEY 0% 31 +19% 0% $314

Institutional Holders of Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q3 7,465,732 $74,303,640 +$5,303,888 $10.13 25
2025 Q2 6,938,036 $69,665,066 +$65,107,410 $10.04 24