CONSTELLIUM SE

CSTMNYSE

$25.50+0.21 (+0.83%)as of Oct 6, 2026

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

CONSTELLIUM SE price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 6, 2026. Price (+68.4%). 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
BlackRock, Inc.	9.45%	$408M	0.01%	Not reported
Bpifrance SA	6.20%	$268M	19.67%	Reduce 33.27%
Morgan Stanley	4.56%	$197M	0.01%	Not reported
Vanguard Portfolio Management LLC	3.24%	$140M	0.01%	Not reported
American Century Companies Inc	3.11%	$135M	0.06%	Not reported
T. Rowe Price Investment Management, Inc.	2.20%	$95M	0.06%	Reduce 24.75%
State Street Corp	2.18%	$94.2M	0.00%	Not reported
Arrowstreet Capital, Limited Partnership	2.10%	$90.7M	0.04%	Not reported
Nuveen, LLC	2.04%	$88.3M	0.02%	Not reported
Kinetic Partners Management, LP	1.88%	$81M	1.93%	Add 93.72%
Encompass Capital Advisors LLC	1.79%	$77.2M	2.75%	Reduce 2.26%
AQR Capital Management LLC	1.77%	$76.6M	0.03%	Not reported
Healthcare of Ontario Pension Plan Trust Fund	1.68%	$72.6M	0.10%	Add 10.79%
D. E. Shaw & Co., Inc.	1.62%	$70.1M	0.03%	Not reported
FMR LLC	1.62%	$69.9M	0.00%	Not reported
Alliancebernstein L.P.	1.60%	$53.1M	0.02%	Not reported
Acadian Asset Management LLC	1.56%	$67.1M	0.08%	Not reported
Goldman Sachs Group Inc	1.53%	$66M	0.01%	Not reported
Millennium Management LLC	1.44%	$62.3M	0.02%	Not reported
Brightline Capital Management, LLC	1.42%	$61.3M	13.28%	Add 4.11%
Nomura Asset Management International Inc.	1.37%	$59.2M	0.09%	Reduce 3.00%
Geode Capital Management, LLC	1.32%	$57M	0.00%	Not reported
Scopus Asset Management, L.P.	1.28%	$55.2M	0.78%	Add 2.97%
SG Americas Securities, LLC	0.91%	$39.3M	0.02%	Not reported
JPMorgan Chase & Co	0.85%	$35.9M	0.00%	Not reported
Westwood Holdings Group Inc	0.81%	$35M	0.26%	Reduce 21.55%
Marshall Wace, LLP	0.81%	$34.9M	0.03%	Not reported
Senator Investment Group LP	0.80%	$34.5M	1.26%	Not reported
Panagora Asset Management Inc	0.77%	$33.4M	0.10%	Not reported
Northern Trust Corp	0.73%	$31.4M	0.00%	Not reported
Bank of America Corp	0.71%	$30.5M	0.00%	Not reported
Allianz Asset Management GmbH	0.66%	$22M	0.02%	Not reported
William Blair Investment Management, LLC	0.65%	$28.1M	0.08%	Reduce 3.90%
Federated Hermes, Inc.	0.62%	$26.7M	0.04%	Not reported
Point72 Asset Management, L.P.	0.61%	$26.2M	0.03%	Not reported
Beaconlight Capital, LLC	0.58%	$24.9M	8.78%	Reduce 33.45%
Penn Capital Management Company, LLC	0.55%	$23.9M	1.52%	Reduce 11.28%
Charles Schwab Investment Management Inc	0.54%	$23.4M	0.00%	Not reported
Bayberry Capital Partners LP	0.48%	$20.9M	7.19%	Reduce 25.06%
Balyasny Asset Management L.P.	0.47%	$20.4M	0.03%	Not reported
Qube Research & Technologies Ltd	0.46%	$19.8M	0.02%	Not reported
Mackenzie Financial Corp	0.44%	$18.9M	0.02%	Not reported
Fisher Asset Management, LLC	0.41%	$17.6M	0.01%	Add 2.40%
New York State Common Retirement Fund	0.38%	$16.6M	0.02%	Not reported
Raymond James Financial Inc	0.38%	$16.3M	0.00%	Not reported
Wells Fargo & Company	0.37%	$15.9M	0.00%	Not reported
Jupiter Topco LLC	0.37%	$15.8M	0.01%	Not reported
Mountaineer Partners Management, LLC	0.36%	$15.4M	11.18%	Reduce 26.78%
Russell Investments Group, Ltd.	0.35%	$15.1M	0.01%	Not reported
Citadel Advisors LLC	0.35%	$15.1M	0.00%	Not reported

50 of 363 holders

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