QSEA
Quartzsea Acquisition Corp
$10.55
+0.00 (+0.00%)
At close · Jul 2
Market Cap
$120.03M
Shares
11,409,900
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 26
Total Value: $78,080,560
Total Shares: 7,529,467
Institutional Ownership Trend
4 quarters
Holder Concentration
Across 26 13F filers · Δ vs Dec 31, 2025Top Holder
30.0%
−0.2 pts
Top 5
59.0%
−0.3 pts
Top 10
81.3%
−0.0 pts
HHI
1,254
Broadly held−10
Quarterly Activity
vs Dec 31, 2025
New
2
Increased
5
Decreased
7
Sold Out
1
Unchanged
12
Holder count:
+1
Institutional value:
+1.7%
Shares held:
+0.4%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mid BERKLEY W R CORP | +87,863 | 405,549 | |
| Small Logan Stone Capital, LLC | +1,500 | 51,553 | |
| Mid MIZUHO SECURITIES USA LLC | +1,001 | 677,754 | |
| Mega D. E. Shaw & Co., Inc. | +100 | 170,112 | |
| Mega MORGAN STANLEY | +33 | 71 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large TORONTO DOMINION BANK | −41,975 | 200,000 | |
| Mega TWO SIGMA INVESTMENTS, LP | −25,982 | 59,288 | |
| Mid AQR Arbitrage LLC | −15,672 | 354,288 | |
| Mid Karpus Management, Inc. | −7,075 | 2,256,805 | |
| Mid WOLVERINE ASSET MANAGEMENT LLC | −2,991 | 599,522 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small RLH Capital LLC | 41,339 | $428,685 | |
| Mega BNP PARIBAS ARBITRAGE, SA | 16,987 | $176,155 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Large Clear Street Group Inc. | 24,693 | $252,609 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid Karpus Management, Inc. | $23,403,067 | 29.97% | 2,256,805 | Shares | Sole | 2026-05-14 | ||||
| Mid MIZUHO SECURITIES USA LLC Broker-Dealer | $7,028,308 | 9.00% | 677,754 | Shares | Defined | 2026-05-11 | ||||
| Mid WOLVERINE ASSET MANAGEMENT LLC | $6,217,043 | 7.96% | 599,522 | Shares | Defined | 2026-05-04 | ||||
| Mid RIVERNORTH CAPITAL MANAGEMENT, LLC | $5,182,469 | 6.64% | 499,756 | Shares | Sole | 2026-05-15 | ||||
| Mid MANGROVE PARTNERS IM, LLC | $4,232,556 | 5.42% | 408,154 | Shares | Sole | 2026-05-15 | ||||
| Mid BERKLEY W R CORP | $4,205,543 | 5.39% | 405,549 | Shares | Sole | 2026-05-15 | ||||
| Mid Westchester Capital Management, LLC | $3,801,692 | 4.87% | 366,605 | Shares | Other | 2026-05-15 | ||||
| Mid AQR Arbitrage LLC | $3,673,966 | 4.71% | 354,288 | Shares | Defined | 2026-05-15 | ||||
| Mid Polar Asset Management Partners Inc. | $3,629,500 | 4.65% | 350,000 | Shares | Sole | 2026-05-15 | ||||
| Large TORONTO DOMINION BANK Bank | $2,074,000 | 2.66% | 200,000 | Shares | Defined | 2026-05-15 | ||||
| Small Shaolin Capital Management LLC | $1,831,196 | 2.35% | 176,586 | Shares | Sole | 2026-05-15 | ||||
| Large Hudson Bay Capital Management LP | $1,814,750 | 2.32% | 175,000 | Shares | Sole | 2026-05-13 | ||||
| Mid Linden Advisors LP | $1,814,750 | 2.32% | 175,000 | Shares | Sole | 2026-05-15 | ||||
| Mega D. E. Shaw & Co., Inc. | $1,764,061 | 2.26% | 170,112 | Shares | Defined | 2026-05-15 | ||||
| Mid GLAZER CAPITAL, LLC | $1,550,771 | 1.99% | 149,544 | Shares | Sole | 2026-05-14 | ||||
| Small Crossingbridge Advisors, LLC | $1,453,759 | 1.86% | 140,189 | Shares | Sole | 2026-05-14 | ||||
| Mega GOLDMAN SACHS GROUP INC | $1,240,884 | 1.59% | 119,661 | Shares | Defined | 2026-05-15 | ||||
| Mid Dakota Wealth Management | $720,715 | 0.92% | 69,500 | Shares | Defined | 2026-05-07 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $614,816 | 0.79% | 59,288 | Shares | Sole | 2026-05-15 | ||||
| Small Logan Stone Capital, LLC | $534,604 | 0.68% | 51,553 | Shares | Sole | 2026-05-15 | ||||
| Small RLH Capital LLC | $428,685 | 0.55% | 41,339 | Shares | Defined | 2026-04-29 | ||||
| Small Radcliffe Capital Management, L.P. | $275,354 | 0.35% | 26,553 | Shares | Sole | 2026-05-15 | ||||
| Micro Warberg Asset Management LLC | $227,631 | 0.29% | 21,951 | Shares | Sole | 2026-05-07 | ||||
| Mid Wellspring Financial Advisors, LLC | $183,549 | 0.24% | 17,700 | Shares | Sole | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $176,155 | 0.23% | 16,987 | Shares | Defined | 2026-05-12 | ||||
| Mega MORGAN STANLEY | $736 | 0.00% | 71 | Shares | Defined | 2026-05-15 | ||||
| No holders match your search. | ||||||||||