Quartzsea Acquisition Corp

QSEANASDAQ

$10.72+0.03 (+0.23% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Quartzsea Acquisition Corp price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+5.7%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Mizuho Securities USA LLC	53.39%	$17.3M	0.17%	Add 146.56%
Berkley W R Corp	34.96%	$11.5M	0.53%	Add 169.80%
Karpus Management, Inc.	31.14%	$10.3M	0.30%	Not reported
Westchester Capital Management, LLC	19.54%	$6.43M	0.31%	Add 66.83%
Rivernorth Capital Management, LLC	15.96%	$5.32M	0.25%	Not reported
Wolverine Asset Management LLC	15.83%	$5.21M	0.05%	Not reported
Polar Asset Management Partners Inc.	11.98%	$3.95M	0.07%	Not reported
AQR Arbitrage LLC	11.38%	$3.75M	0.05%	Not reported
RLH Capital LLC	8.07%	$2.66M	1.27%	Add 510.66%
Hudson Bay Capital Management LP	5.60%	$1.84M	0.01%	Not reported
D. E. Shaw & Co., Inc.	5.48%	$1.81M	0.00%	Not reported
Toronto Dominion Bank	4.79%	$1.58M	0.00%	Not reported
Clear Street Group Inc.	4.11%	$1.35M	0.00%	Not reported
Glazer Capital, LLC	4.05%	$1.34M	0.03%	Not reported
Goldman Sachs Group Inc	3.82%	$1.26M	0.00%	Not reported
Shaolin Capital Management LLC	3.67%	$1.21M	0.06%	Not reported
Dakota Wealth Management	1.59%	$523K	0.01%	Not reported
Warberg Asset Management LLC	0.73%	$241K	0.04%	Not reported
BNP Paribas Financial Markets	0.54%	$179K	0.00%	Not reported
Citadel Advisors LLC	0.35%	$115K	0.00%	Not reported
Morgan Stanley	0.00%	$642	0.00%	Not reported

End of history · 21 holders

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