MILLENNIUM MANAGEMENT LLC

Position in CSTM — Constellium SE

CIK 1273087 NEW YORK, NY

Back to CSTM Full portfolio

Position in CSTM

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$85,294,836

-$32,892,194 QoQ

Shares Held

3,470,091

-44.7% QoQ

Ownership

2.55%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in CSTM Over Time

Shares Held

Position Value (USD)

Derivatives in CSTM

reported options exposure · as of Mar 31, 2021

CallValue

$735,000

CallShares

50,000

PutValue

PutShares

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Aluminum

Basic Materials · as of Mar 31, 2026

MILLENNIUM MANAGEMENT LLC holds $228,456,360 across 4 Aluminum names. CSTM ranks #2 (37.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CENX	Century Aluminum Co	1,987,625	$116,653,711
2	CSTM	Constellium SE This page	3,470,091	$85,294,836
3	AA	Alcoa Corp	284,594	$18,877,120
4	KALU	Kaiser Aluminum Corp	63,320	$7,630,693

All Filings in CSTM

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29 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$85,294,836	3,470,091	-44.7%	Shares	Sole	2026-05-15
2025-12-31	$118,187,030	6,269,869	-9.6%	Shares	Sole	2026-02-17
2025-09-30	$103,204,198	6,935,766	-6.9%	Shares	Sole	2025-11-14
2025-09-10	$108,005,127	7,453,770	+45.5%	Shares	Sole	2025-09-16
2025-06-30	$68,127,467	5,122,366	-29.2%	Shares	Sole	2025-08-14
2025-05-28	$88,482,778	7,234,896	+75.8%	Shares	Sole	2025-05-30
2025-03-31	$41,524,779	4,115,439	+65.8%	Shares	Sole	2025-05-15
2024-12-31	$25,488,887	2,481,878	+33.5%	Shares	Sole	2025-02-14
2024-09-30	$30,235,648	1,859,511	+58.4%	Shares	Sole	2024-11-14
2024-06-30	$22,126,884	1,173,840	+29.9%	Shares	Sole	2024-08-14
2024-03-31	$19,973,400	903,365	+76.7%	Shares	Sole	2024-05-15
2023-12-31	$10,204,210	511,233	-39.2%	Shares	Sole	2024-02-14
2023-09-30	$15,297,591	840,527	-9.0%	Shares	Sole	2023-11-14
2023-06-30	$15,882,411	923,396	-33.7%	Shares	Sole	2023-08-14
2023-03-31	$21,283,695	1,392,912	-7.5%	Shares	Sole	2023-05-15
2022-12-31	$17,812,513	1,505,707	-38.7%	Shares	Sole	2023-02-14
2022-09-30	$24,926,878	2,458,272	+67.9%	Shares	Sole	2022-11-14
2022-06-30	$19,338,911	1,463,960	+517.4%	Shares	Sole	2022-08-15
2022-03-31	$4,267,854	237,103	+70.9%	Shares	Sole	2022-05-16
2021-12-31	$2,484,457	138,719	-65.7%	Shares	Sole	2022-02-14
2021-09-30	$7,586,706	403,978	-38.2%	Shares	Sole	2021-11-15
2021-06-30	$12,390,893	653,873	-9.4%	Shares	Sole	2021-08-16
2021-03-31	$10,610,136	721,778	+1343.6%	Shares	Sole	2021-05-17
2021-03-31	$735,000	50,000	-94.1%	Call	Sole	2021-05-17
2020-12-31	$11,756,776	840,370	+1580.7%	Shares	Sole	2021-02-16
2020-12-31	$699,500	50,000	-93.3%	Call	Sole	2021-02-16
2020-09-30	$5,822,211	741,683	-37.7%	Shares	Sole	2020-11-16
2020-06-30	$9,143,362	1,190,542	+3212.7%	Shares	Sole	2020-08-14
2020-03-31	$187,242	35,939	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.