WELLINGTON MANAGEMENT GROUP LLP

Position in CENX — Century Aluminum Co

CIK 902219 Boston, MA

Position in CENX

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

Position Value

$22,211,053

+$14,459,566 QoQ

Shares Held

378,447

+91.3% QoQ

Ownership

0.382%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2020

20 quarters on record

Voting authority Sole 0.ToString("F0")% Shared 65.85387121578451.ToString("F0")% None 34.14612878421549.ToString("F0")%

Basic Materials · as of Mar 31, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $89,828,806 across 3 Aluminum names. CENX ranks #3 (24.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	KALU	Kaiser Aluminum Corp	332,112	$40,022,815
2	AA	Alcoa Corp	416,025	$27,594,938
3	CENX	Century Aluminum Co This page	378,447	$22,211,053

20 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$22,211,053	378,447	+91.3%	Shares	Defined	2026-05-15
2025-12-31	$7,751,487	197,843	+1.9%	Shares	Defined	2026-02-17
2025-09-30	$5,698,597	194,094	-80.2%	Shares	Defined	2025-11-14
2025-06-30	$17,688,467	981,602	+41.5%	Shares	Defined	2025-08-14
2025-03-31	$12,876,036	693,752	+68.6%	Shares	Defined	2025-05-13
2024-12-31	$7,499,150	411,589	+0.6%	Shares	Defined	2025-02-12
2024-09-30	$6,641,818	409,231	-1.3%	Shares	Defined	2024-11-14
2024-06-30	$6,947,229	414,760	-2.7%	Shares	Defined	2024-08-14
2024-03-31	$6,557,508	426,089	+151.3%	Shares	Defined	2024-05-15
2023-12-31	$2,058,627	169,574	+3.1%	Shares	Defined	2024-02-12
2023-09-30	$1,182,826	164,510	+0.1%	Shares	Defined	2023-11-14
2023-06-30	$1,433,227	164,361	-1.7%	Shares	Defined	2023-08-14
2023-03-31	$1,671,300	167,130	-0.8%	Shares	Defined	2023-05-12
2022-12-31	$1,378,501	168,521	+2.6%	Shares	Defined	2023-02-13
2022-09-30	$867,503	164,300	0.0%	Shares	Defined	2022-11-14
2022-06-30	$1,210,889	164,300	-33.7%	Shares	Defined	2022-08-15
2022-03-31	$6,517,879	247,734	+762.4%	Shares	Defined	2022-05-16
2021-12-31	$475,702	28,726	-74.3%	Shares	Defined	2022-02-11
2021-09-30	$1,503,412	111,778	+480.3%	Shares	Defined	2021-11-15
2020-12-31	$212,459	19,262	—	Shares	Defined	2021-02-12
No filing history on record for this holder in this stock.