HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

Pension

Position in CENX — Century Aluminum Co

CIK 1535845 TORONTO, A6

Position in CENX

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$10,802,540

+$8,545,772 QoQ

Shares Held

184,061

+219.6% QoQ

Ownership

0.186%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

10 quarters on record

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

Basic Materials · as of Mar 31, 2026

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND holds $62,187,353 across 3 Aluminum names. CENX ranks #2 (17.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CSTM	Constellium SE	2,056,336	$50,544,738
2	CENX	Century Aluminum Co This page	184,061	$10,802,540
3	KALU	Kaiser Aluminum Corp	6,971	$840,075

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$10,802,540	184,061	+219.6%	Shares	Sole	2026-05-14
2025-12-31	$2,256,768	57,600	-51.8%	Shares	Sole	2026-02-13
2024-12-31	$2,175,468	119,400	-10.1%	Shares	Sole	2025-02-14
2022-03-31	$3,493,968	132,800	+187.4%	Shares	Sole	2022-05-12
2021-09-30	$621,390	46,200	-63.7%	Shares	Sole	2021-11-10
2021-06-30	$1,642,186	127,400	-91.4%	Shares	Sole	2021-08-12
2021-03-31	$26,083,820	1,477,000	+12.6%	Shares	Sole	2021-05-13
2020-12-31	$14,470,257	1,311,900	-18.0%	Shares	Sole	2021-03-01
2020-09-30	$11,392,000	1,600,000	0.0%	Shares	Sole	2021-03-01
2020-06-30	$11,408,000	1,600,000	—	Shares	Sole	2021-03-01
No filing history on record for this holder in this stock.