Latest Period
Q2 2026
Security Snapshot
Quartzsea Acquisition Corp - Common (QSEA) Institutional Ownership
CUSIP: G7314B104
13F Institutional Holders and Ownership History from Q2 2025 to Q2 2026
Institutions Reporting
21
Shares (Excl. Options)
6,740,020
Price
$10.52
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- Security type / class
- Equity / Common
- Symbol
- QSEA on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 6,740,020
- Total 13F value
- $70,894,569
- Portfolio coverage rank
- 0%
- Share change
- -789,447
- Value change
- -$8,202,284
- Number of holders
- 21
- Shares outstanding
- 10,132,692
- SEC-reported price per share
- $10.65
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- QSEA - Quartzsea Acquisition Corp - Common is tracked under CUSIP G7314B104.
- 21 institutions reported positions in Q2 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 26 to 21 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $78,013,286 to $70,894,569.
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 21 institutions filings for Q2 2026.
Security key
G7314B104
Latest holder period
Q2 2026
13F holders
21
13D/G owners
6
CIK / CUSIP context first
Open Q2 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
6
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 | ||||
| MIZUHO FINANCIAL GROUP INC | 8% | $10,469,340 | 993,296 | Mizuho Financial Group, Inc. | 30 Jun 2026 | |||
| Karpus Management, Inc. | 9.6% | +12% | $10,274,023 | 974,765 | 0% | KARPUS MANAGEMENT, INC. | 30 Jun 2026 | |
| BERKLEY W R CORP | 8.9% | $9,486,000 | 900,000 | W. R. Berkley Corporation | 30 Jun 2026 | |||
| Feis Equities LLC | 5.3% | +25% | $6,253,375 | +$1,200,061 | 600,132 | +24% | Feis Equities LLC | 01 Jun 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | 4.9% | -4.6% | $5,212,534 | -$936,459 | 495,488 | -15% | Wolverine Asset Management, LLC | 30 Jun 2026 |
As of 30 Jun 2026, 21 institutional investors reported holding 6,740,020 shares of Quartzsea Acquisition Corp - Common (QSEA). This represents 67% of the company’s total 10,132,692 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
67%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BERKLEY W R CORP | 11% | 1,094,190 | +170% | 0.56% | $11,504,861 |
| MIZUHO SECURITIES USA LLC | 9.8% | 993,296 | +47% | 0.16% | $10,379,943 |
| Karpus Management, Inc. | 9.6% | 974,765 | -57% | 0.29% | $10,254,528 |
| Westchester Capital Management, LLC | 6% | 611,605 | +67% | 0.32% | $6,434,085 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 4.9% | 499,664 | -0.02% | 0.25% | $5,321,422 |
| WOLVERINE ASSET MANAGEMENT LLC | 4.9% | 495,488 | -17% | 0.07% | $5,212,534 |
| Polar Asset Management Partners Inc. | 3.7% | 375,000 | +7.1% | 0.07% | $3,945,000 |
| AQR Arbitrage LLC | 3.5% | 356,213 | +0.54% | 0.05% | $3,747,361 |
| RLH Capital LLC | 2.5% | 252,439 | +511% | 1.3% | $2,655,658 |
| Hudson Bay Capital Management LP | 1.7% | 175,159 | +0.09% | 0.01% | $1,842,673 |
| D. E. Shaw & Co., Inc. | 1.7% | 171,612 | +0.88% | 0% | $1,805,358 |
| TORONTO DOMINION BANK | 1.5% | 150,000 | -25% | 0% | $1,578,000 |
| Clear Street Group Inc. | 1.3% | 128,529 | 0% | $1,352,125 | |
| GLAZER CAPITAL, LLC | 1.3% | 126,887 | -15% | 0.03% | $1,335,000 |
| GOLDMAN SACHS GROUP INC | 1.2% | 119,661 | 0% | 0% | $1,258,834 |
| Shaolin Capital Management LLC | 1.1% | 114,840 | -35% | 0.11% | $1,208,117 |
| Dakota Wealth Management | 0.49% | 49,760 | -28% | 0.01% | $523,476 |
| Warberg Asset Management LLC | 0.23% | 22,916 | +4.4% | 0.07% | $241,076 |
| BNP PARIBAS FINANCIAL MARKETS | 0.17% | 16,987 | 0% | 0% | $178,703 |
| CITADEL ADVISORS LLC | 0.11% | 10,948 | 0% | $115,173 | |
| MORGAN STANLEY | 0% | 61 | -14% | 0% | $642 |
| Logan Stone Capital, LLC | 0% | 0 | -100% | $0 | |
| Crossingbridge Advisors, LLC | 0% | 0 | -100% | $0 | |
| Wellspring Financial Advisors, LLC | 0% | 0 | -100% | $0 | |
| TWO SIGMA INVESTMENTS, LP | 0% | 0 | -100% | $0 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
5
Latest
Q2 2026
Rows shown
1-5 of 5
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 6,740,020 | $70,894,569 | -$8,202,284 | $10.52 | 21 |
| 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 |