Security key
G7314B104
Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QSEA)
CUSIP: G7314B104
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Ordinary Shares, par value $0.0001 per share
- Total 13F shares
- 7,465,732
- Total 13F value
- $74,303,640
- Share change
- +533,982
- SEC-reported price per share
- $10.13
- Number of holders
- 25
- Value change
- +$5,303,897
- Number of buys
- 7
- Number of sells
- 7
- Shares outstanding
- 10,132,679
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
25
Top holders
10
QSEA full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Quartzsea Acquisition Corp SEC filings
Quartzsea Acquisition Corp company facts
Broader feeds
Reporting periods
Holder history for CUSIP G7314B104
Recent filing periods:
Ownership snapshot
Top reported holders of QSEA - Quartzsea Acquisition Corp - Ordinary Shares, par value $0.0001 per share (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%
TD SECURITIES (USA) LLC
2.5%
Karpus Management, Inc.
23%
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 |
| 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
|
23%
|
$23,108,271
2,300,475 shares
|
— | 30 Jun 2025 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC |
13F
Company
|
4.4%
|
$5,150,000
500,000 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
25
Shares
7,465,732
Rows available
25
| 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 Q1 2026 Across Filers
Q1 2026 holders
26
Q3 2025 holders
25
Holder diff
-1
| Investor | Q1 2026 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q1 2026 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend