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

13F Institutional Holders and Ownership History from Q2 2025 to Q4 2025

Type / Class
Equity / Ordinary Shares, par value $0.0001 per share
Symbol
QSEA on Nasdaq
Shares outstanding
11,416,113
Price per share
$10.23
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
7,361,274
Total reported value
$75,243,540
% of total 13F portfolios
0%
Share change
+35,731
Value change
+$360,974
Number of holders
24
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 31 Dec 2025, 24 institutional investors reported holding 7,361,274 shares of Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA). This represents 64% 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 66% 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% 2,263,880 -0.55% 0.71% $23,159,492
MIZUHO SECURITIES USA LLC 5.9% 676,753 +5.4% 0.11% $6,835,502
WOLVERINE ASSET MANAGEMENT LLC 5.3% 602,513 +3.1% 0.09% $6,163,708
RIVERNORTH CAPITAL MANAGEMENT, LLC 4.4% 499,756 +26% 0.24% $5,112,504
MANGROVE PARTNERS IM, LLC 3.6% 408,154 0% 0.34% $4,175,415
AQR Arbitrage LLC 3.2% 369,960 0% 0.08% $3,792,090
Westchester Capital Management, LLC 3.2% 366,605 0% 0.18% $3,757,702
Polar Asset Management Partners Inc. 3.1% 350,000 0% 0.07% $3,580,500
BERKLEY W R CORP 2.8% 317,686 +10% 0.18% $3,249,928
TORONTO DOMINION BANK 2.1% 241,975 -9.4% 0% $2,475,404
Shaolin Capital Management LLC 1.5% 176,586 +0.91% 0.07% $1,806,475
Hudson Bay Capital Management LP 1.5% 175,000 0% 0.01% $1,793,750
Linden Advisors LP 1.5% 175,000 0% 0.01% $1,793,750
D. E. Shaw & Co., Inc. 1.5% 170,012 0% 0% $1,742,623
Glazer Capital, LLC 1.3% 149,926 -8.4% 0.04% $1,534,000
GOLDMAN SACHS GROUP INC 1% 119,661 0% 0% $1,224,132
TWO SIGMA INVESTMENTS, LP 0.75% 85,270 -54% 0% $872,312
Dakota Wealth Management 0.61% 69,500 0% 0.01% $710,985
Logan Stone Capital, LLC 0.44% 50,053 0% 0.13% $512,042
Radcliffe Capital Management, L.P. 0.23% 26,553 0% 0.01% $271,637
Clear Street Group Inc. 0.22% 24,693 0% 0% $252,609
Warberg Asset Management LLC 0.21% 24,000 0% 0.07% $245,520
Wellspring Financial Advisors, LLC 0.16% 17,700 0% 0.02% $181,071
MORGAN STANLEY 0% 38 +23% 0% $389
Crossingbridge Advisors, LLC 1.2% 140,189 0% $140,189

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 Q4 7,361,274 $75,243,540 +$360,974 $10.23 24
2025 Q3 7,465,732 $74,303,640 +$5,303,897 $10.13 25
2025 Q2 6,938,036 $69,665,066 +$65,107,410 $10.04 24