Security key
G7314B112
Quartzsea Acquisition Corp - Common Shares (QSEAU)
CUSIP: G7314B112
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Shares
- Total 13F shares
- 260,838
- Total 13F value
- $2,681,403
- Share change
- -397,628
- SEC-reported price per share
- $10.10
- Number of holders
- 3
- Value change
- -$4,016,042
- Number of sells
- 1
- Shares outstanding
- 11,460,304
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
3
Top holders
3
QSEAU full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 2025
Quartzsea Acquisition Corp SEC filings
Quartzsea Acquisition Corp company facts
Broader feeds
Reporting periods
Holder history for CUSIP G7314B112
Recent filing periods:
Ownership snapshot
Top reported holders of QSEAU - Quartzsea Acquisition Corp - Common Shares (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Blue Jay Investment LLC
Disclosed value leader
Karpus Management, Inc.
Comparable rows
15/15
Latest evidence
30 Sep 2025
13D/G
3/4/5
13F
Lead comparable stake: 27%
13D/G row: Blue Jay Investment LLC
Showing 1-6 of 15 holder rows.
Quick read
Blue Jay Investment LLC leads the comparable SEC ownership view at 27%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Blue Jay Investment LLC's linked filing trail.
Comparable ownership
Top 5
Blue Jay Investment LLC
27%
Feis Equities LLC
9.8%
MIZUHO FINANCIAL GROUP INC
5.6%
WOLVERINE ASSET MANAGEMENT LLC
5.1%
TD SECURITIES (USA) LLC
2.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Blue Jay Investment LLC |
13D/G
3/4/5
10%+ Owner
|
27%
|
—
3,129,900 shares
|
$0 | 19 Mar 2025 |
| Feis Equities LLC |
13D/G
|
9.8%
|
$8,229,450
814,797 shares
|
$0 | 18 Mar 2025 |
| MIZUHO FINANCIAL GROUP INC |
13D/G
|
5.6%
|
$6,610,303
641,777 shares
|
-$2,206,497 | 30 Sep 2025 |
| WOLVERINE ASSET MANAGEMENT LLC |
13D/G
13F
Company
|
5.1%
|
$5,903,500
584,505 shares
|
$0 | 30 Sep 2025 |
| TD SECURITIES (USA) LLC |
13D/G
|
2.5%
|
$2,884,978
280,095 shares
|
-$3,423,772 | 30 Jun 2025 |
| Karpus Management, Inc. |
13F
Company
|
20%
|
$23,108,271
2,300,475 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
3
Shares
260,838
Rows available
3
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
3
Q3 2025 holders
3
Holder diff
0
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend