Quartzsea Acquisition Corp - Common (QSEA)

CUSIP: G7314B104

Q3 2026 13F Holders as of 30 Sep 2026

Holder snapshot 3 signals
Share change
0
SEC-reported price per share
$10.70
Number of holders
1
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
10,132,692

Security key

G7314B104

Report period

Q3 2026

Institutions

1

Top holders

1

Ownership snapshot

Top reported holders of QSEA - Quartzsea Acquisition Corp - Common (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
BERKLEY W R CORP
Comparable rows
7/15
Latest evidence
30 Jun 2026
13D/G 3/4/5 13F Lead comparable stake: 27% 8 rows are not safely comparable across share classes. 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%.

7 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%
Karpus Management, Inc. 9.6%
BERKLEY W R CORP 8.9%
MIZUHO FINANCIAL GROUP INC 8%
Feis Equities LLC 5.3%

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%
Reported 13D/G · 19 Mar 2025
—
3,129,900 shares
$0 19 Mar 2025
Karpus Management, Inc.
13D/G 13F
Company
9.6%
Reported 13D/G · 30 Jun 2026
$10,274,023
974,765 shares
$0 30 Jun 2026
BERKLEY W R CORP
13F 13D/G
Company · W. R. Berkley Corporation
8.9%
Reported 13D/G · 30 Jun 2026
$11,504,861
1,094,190 shares
— 30 Jun 2026
MIZUHO FINANCIAL GROUP INC
13D/G
8%
Reported 13D/G · 30 Jun 2026
$10,469,340
993,296 shares
$0 30 Jun 2026
Feis Equities LLC
13D/G
5.3%
Reported 13D/G · 01 Jun 2026
$6,253,375
600,132 shares
+$1,200,061 01 Jun 2026
WOLVERINE ASSET MANAGEMENT LLC
13F 13D/G
Company
4.9%
Reported 13D/G · 30 Jun 2026
$5,228,839
569,600 shares
mixed-class rows
— 30 Jun 2026
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 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
1
Shares
22,916
Rows available
1
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 2026 vs Q2 2026 Across Filers

Q2 2026 holders
21
Q3 2026 holders
1
Holder diff
-20
Investor Q2 2026 Shares Q3 2026 Shares Share Diff Share Chg % Q2 2026 value Q3 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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