RENAISSANCE TECHNOLOGIES LLC

Position in CENX — Century Aluminum Co

CIK 1037389 NEW YORK, NY

Position in CENX

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$4,338,696

-$3,848,500 QoQ

Shares Held

94,299

-32.4% QoQ

Ownership

0.095%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#97

of 413 holders

Holding Since

Jun 2020

21 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

RENAISSANCE TECHNOLOGIES LLC holds $37,668,433 across 3 Aluminum names. CENX ranks #2 (11.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AA	Alcoa Corp	565,696	$29,495,389
2	CENX	Century Aluminum Co This page	94,299	$4,338,696
3	KALU	Kaiser Aluminum Corp	19,600	$3,834,348

21 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$4,338,696	94,299	-32.4%	Shares	Sole	2026-08-13
2026-03-31	$8,187,196	139,499	+18.2%	Shares	Sole	2026-05-14
2025-12-31	$4,623,200	117,999	-67.7%	Shares	Sole	2026-02-12
2025-09-30	$10,719,306	365,099	+134.6%	Shares	Sole	2025-11-13
2025-06-30	$2,803,893	155,599	-32.3%	Shares	Sole	2025-08-13
2024-12-31	$4,185,115	229,699	-19.3%	Shares	Sole	2025-02-13
2024-09-30	$4,620,664	284,699	+9.8%	Shares	Sole	2024-11-13
2024-06-30	$4,343,258	259,299	-18.7%	Shares	Sole	2024-08-09
2024-03-31	$4,910,933	319,099	-29.4%	Shares	Sole	2024-05-13
2023-12-31	$5,486,053	451,899	-26.5%	Shares	Sole	2024-02-13
2023-09-30	$4,418,247	614,499	-19.1%	Shares	Sole	2023-11-14
2023-06-30	$6,623,703	759,599	+8.3%	Shares	Sole	2023-08-11
2023-03-31	$7,011,990	701,199	-32.4%	Shares	Sole	2023-05-12
2022-12-31	$8,486,741	1,037,499	+54.6%	Shares	Sole	2023-02-13
2022-09-30	$3,543,402	671,099	+15.1%	Shares	Sole	2022-11-14
2022-06-30	$4,297,439	583,099	-12.9%	Shares	Sole	2022-08-12
2022-03-31	$17,606,625	669,199	+3105.3%	Shares	Sole	2022-05-13
2021-03-31	$368,705	20,878	-93.2%	Shares	Sole	2021-05-13
2020-12-31	$3,382,150	306,632	-38.7%	Shares	Sole	2021-02-10
2020-09-30	$3,560,384	500,054	+82.8%	Shares	Sole	2020-11-13
2020-06-30	$1,950,447	273,555	—	Shares	Sole	2020-08-13
No filing history on record for this holder in this stock.