Quartzsea Acquisition QSEAR Institutional Ownership

Ownership Summary

Quartzsea Acquisition Corp (NASDAQ:QSEAR) has 17 institutional investors with active 13F positions as of March 2026.

• These investors held 84.0% of outstanding shares in March 2026, down from 114.7% in December 2025.
• Their total shares held in QSEAR increased 5.48% from the prior quarter, while the number of investors in Quartzsea Acquisition stayed flat year over year.
• Among the 17 funds, 2 bought more Quartzsea Acquisition shares, 5 sold down, and 10 held their ground.
• In total, institutional investors held 6.96Mn shares in Quartzsea Acquisition as of March 2026, up by 361.82K shares quarter on quarter, and with no net change year over year.
• As of March 31, 2026, Harraden Circle Investments, LLC held the largest stake in Quartzsea Acquisition with 2.55Mn shares, accounting for 30.77% of total shares outstanding.
• The biggest buyers of Quartzsea Acquisition for the quarter ending March 2026 included Jpmorgan Chase & Co (400.0K), MIZUHO SECURITIES USA LLC (10.24K).
• Leading sellers of Quartzsea Acquisition shares for the quarter ending March 2026 were Toronto Dominion Bank (34.93K), AQR Arbitrage LLC (10.38K), WOLVERINE ASSET MANAGEMENT LLC (1.56K), Shaolin Capital Management LLC (1.49K), GLAZER CAPITAL, LLC (50).
• According to Business Quant data, leading holders of QSEAR for March 2026 are Harraden Circle Investments, LLC (2.55Mn), Shaolin Capital Management LLC (573.51K), RIVERNORTH CAPITAL MANAGEMENT, LLC (499.87K), Toronto Dominion Bank (425.85K), MANGROVE PARTNERS IM, LLC (408.15K), HIGHBRIDGE CAPITAL MANAGEMENT LLC (400.0K), Jpmorgan Chase & Co (400.0K), AQR Arbitrage LLC (369.96K), Polar Asset Management Partners Inc. (350.0K), LINDEN ADVISORS LP (175.0K).