ACADIAN ASSET MANAGEMENT LLC

Position in RIO — Rio Tinto PLC

CIK 916542 Boston, MA

Position in RIO

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$3,258,712

+$2,241,531 QoQ

Shares Held

34,931

+174.8% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

23 quarters on record

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

Basic Materials · as of Mar 31, 2026

ACADIAN ASSET MANAGEMENT LLC holds $24,647,680 across 10 Other Industrial Metals & Mining names. RIO ranks #4 (13.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VALE	Vale S.A.	441,148	$7,018,664
2	SCZM	Santacruz Silver Mining Ltd.	800,073	$6,856,625
3	NEXA	Nexa Resources S.A.	501,106	$5,306,712
4	RIO	Rio Tinto PLC This page	34,931	$3,258,712
5	TECK	Teck Resources Ltd	16,780	$868,365
6	MTRN	MATERION Corp	4,170	$603,190
7	GSM	Ferroglobe PLC	141,696	$583,787
8	SKE	Skeena Resources Ltd	2,100	$62,412

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,258,712	34,931	+174.8%	Shares	Defined	2026-05-13
2025-12-31	$1,017,181	12,710	+63.0%	Shares	Defined	2026-02-10
2025-09-30	$514,613	7,796	+106.2%	Shares	Defined	2025-11-13
2025-06-30	$220,545	3,781	-93.4%	Shares	Defined	2025-08-07
2025-03-31	$3,460,307	57,595	+37.9%	Shares	Defined	2025-05-21
2024-12-31	$2,455,670	41,756	+5573.4%	Shares	Defined	2025-02-11
2024-09-30	$52,381	736	-96.2%	Shares	Defined	2024-11-12
2024-06-30	$1,287,415	19,527	-98.2%	Shares	Defined	2024-08-06
2024-03-31	$69,794,726	1,094,991	-69.3%	Shares	Defined	2024-05-10
2023-12-31	$265,428,381	3,564,711	+22.8%	Shares	Defined	2024-02-13
2023-09-30	$184,752,838	2,903,093	+5.9%	Shares	Defined	2023-11-13
2023-06-30	$175,021,254	2,741,561	+9.0%	Shares	Defined	2023-08-07
2023-03-31	$172,496,895	2,514,532	+537.9%	Shares	Defined	2023-05-11
2022-12-31	$28,066,256	394,189	+858.2%	Shares	Defined	2023-02-14
2022-09-30	$2,265,168	41,140	-72.9%	Shares	Defined	2022-11-14
2022-06-30	$9,271,878	151,998	+41.6%	Shares	Defined	2022-08-09
2022-03-31	$8,627,482	107,307	-64.1%	Shares	Defined	2022-05-12
2021-09-30	$19,949,511	298,556	-64.8%	Shares	Defined	2021-11-12
2021-06-30	$71,232,173	849,114	-12.2%	Shares	Defined	2021-08-11
2021-03-31	$75,105,487	967,231	-0.5%	Shares	Defined	2021-05-11
2020-12-31	$73,119,105	972,070	+0.1%	Shares	Defined	2021-02-11
2020-09-30	$58,650,466	971,195	-0.1%	Shares	Defined	2020-11-09
2020-06-30	$54,612,521	972,099	—	Shares	Defined	2020-08-12
No filing history on record for this holder in this stock.