Latest Period
Q1 2026
Security Snapshot
Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA) Institutional Ownership
CUSIP: G7314B104
13F Institutional Holders and Ownership History from Q2 2025 to Q1 2026
Institutions Reporting
26
Shares (Excl. Options)
7,529,467
Price
$10.37
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- Type / Class
- Equity / Ordinary Shares, par value $0.0001 per share
- Symbol
- QSEA on Nasdaq
- Shares outstanding
- 11,416,113
- Price per share
- $10.39
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 7,529,467
- Total reported value
- $78,013,286
- % of total 13F portfolios
- 0%
- Share change
- -30,322
- Value change
- -$311,260
- Number of holders
- 26
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- QSEA - Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share is tracked under CUSIP G7314B104.
- 26 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 24 to 26 between Q4 2025 and Q1 2026.
- Reported value moved from $75,243,540 to $78,013,286.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 26 institutions filings for Q1 2026.
Security key
G7314B104
Latest holder period
Q1 2026
13F holders
26
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
QSEA full holder history
Quartzsea Acquisition Corp SEC filings
Quartzsea Acquisition Corp company facts
Quartzsea Acquisition Corp insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G7314B104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
QSEA
| 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 Mar 2026, 26 institutional investors reported holding 7,529,467 shares of Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA). This represents 66% of the company’s total 11,416,113 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
66%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Karpus Management, Inc. | 20% | 2,256,805 | -0.31% | 0.73% | $23,403,068 |
| MIZUHO SECURITIES USA LLC | 5.9% | 677,754 | +0.15% | 0.16% | $6,946,979 |
| WOLVERINE ASSET MANAGEMENT LLC | 5.3% | 599,522 | -0.5% | 0.1% | $6,217,043 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 4.4% | 499,756 | 0% | 0.26% | $5,182,470 |
| MANGROVE PARTNERS IM, LLC | 3.6% | 408,154 | 0% | 0.34% | $4,232,557 |
| BERKLEY W R CORP | 3.6% | 405,549 | +28% | 0.23% | $4,205,543 |
| Westchester Capital Management, LLC | 3.2% | 366,605 | 0% | 0.18% | $3,805,361 |
| AQR Arbitrage LLC | 3.1% | 354,288 | -4.2% | 0.06% | $3,677,509 |
| Polar Asset Management Partners Inc. | 3.1% | 350,000 | 0% | 0.09% | $3,629,500 |
| TORONTO DOMINION BANK | 1.8% | 200,000 | -17% | 0% | $2,074,000 |
| Shaolin Capital Management LLC | 1.5% | 176,586 | 0% | 0.15% | $1,831,197 |
| Linden Advisors LP | 1.5% | 175,000 | 0% | 0.01% | $1,816,500 |
| Hudson Bay Capital Management LP | 1.5% | 175,000 | 0% | 0.01% | $1,816,500 |
| D. E. Shaw & Co., Inc. | 1.5% | 170,112 | +0.06% | 0% | $1,765,763 |
| GLAZER CAPITAL, LLC | 1.3% | 149,544 | -0.25% | 0.03% | $1,551,000 |
| Crossingbridge Advisors, LLC | 1.2% | 140,189 | 0% | 0.26% | $1,455,162 |
| GOLDMAN SACHS GROUP INC | 1% | 119,661 | 0% | 0% | $1,240,885 |
| Dakota Wealth Management | 0.61% | 69,500 | 0% | 0.02% | $720,715 |
| TWO SIGMA INVESTMENTS, LP | 0.52% | 59,288 | -30% | 0% | $614,817 |
| Logan Stone Capital, LLC | 0.45% | 51,553 | +3% | 0.15% | $534,605 |
| RLH Capital LLC | 0.36% | 41,339 | 0% | 0.22% | $428,685 |
| Radcliffe Capital Management, L.P. | 0.23% | 26,553 | 0% | 0.02% | $275,355 |
| Warberg Asset Management LLC | 0.19% | 21,951 | -8.5% | 0.07% | $227,632 |
| Wellspring Financial Advisors, LLC | 0.16% | 17,700 | 0% | 0.02% | $183,549 |
| BNP PARIBAS FINANCIAL MARKETS | 0.15% | 16,987 | 0% | 0% | $176,155 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
4
Latest
Q1 2026
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 7,529,467 | $78,013,286 | -$311,260 | $10.37 | 26 |
| 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 |