Stock Ownership/RIO

RIO TINTO PLC ADR (RIO): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in RIO · Materials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
30
13F filers
Aggregate Value
$3.0B
Across holders
Last Price
$104.80
2026-08-24
Sector
Materials
GICS
Quarterly fund activity13 increased14 reduced2 exited
Full exits: Lighthouse Investment Partners, LLC, Parallax Volatility Advisers, L.P.
Institutional Holders of RIO
↗
30 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager20.68M$2.0B65.5%0.6%Added+$51.3MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund2.80M$265.4M8.9%0.2%Added+$39.7MQ2 2026
Grantham, Mayo, Van Otterloo & Co. LLC
CIK 0001352662
Institutional Manager1.84M$174.6M5.8%0.4%Reduced$-15.7MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund1.72M$162.8M5.4%0.1%Reduced$-189.4MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund1.21M$115.3M3.8%0.2%Added+$23.6MQ2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund566K$53.7M1.8%0.0%Reduced$-31.0MQ2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund525K$49.8M1.7%0.1%Unchanged+$0Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund438K$41.6M1.4%0.0%Added+$41.0MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund359K$34.1M1.1%0.0%Added+$24.8MQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund249K$23.7M0.8%0.0%Added+$14.1MQ2 2026
Fisher Asset Management, LLCAdded
Institutional Manager
$2.0B· 65.5% of total· 0.6% port· 20.68M sh· +$51.3M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$265.4M· 8.9% of total· 0.2% port· 2.80M sh· +$39.7M QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCReduced
Institutional Manager
$174.6M· 5.8% of total· 0.4% port· 1.84M sh· $-15.7M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$162.8M· 5.4% of total· 0.1% port· 1.72M sh· $-189.4M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$115.3M· 3.8% of total· 0.2% port· 1.21M sh· +$23.6M QoQ· Q2 2026
Clearbridge Investments, LLCReduced
Hedge Fund
$53.7M· 1.8% of total· 0.0% port· 566K sh· $-31.0M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Unchanged
Hedge Fund
$49.8M· 1.7% of total· 0.1% port· 525K sh· +$0 QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$41.6M· 1.4% of total· 0.0% port· 438K sh· +$41.0M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$34.1M· 1.1% of total· 0.0% port· 359K sh· +$24.8M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$23.7M· 0.8% of total· 0.0% port· 249K sh· +$14.1M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$19.2M· 0.6% of total· 0.0% port· 203K sh· $-16.2M QoQ· Q2 2026
Hudson Bay Capital Management LPAdded
Hedge Fund
$18.0M· 0.6% of total· 0.0% port· 190K sh· — QoQ· Q2 2026
FARALLON CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$17.4M· 0.6% of total· 0.1% port· 183K sh· +$12.3M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$11.4M· 0.4% of total· 0.0% port· 120K sh· $-52.5M QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$11.2M· 0.4% of total· 0.0% port· 118K sh· $-31.1M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$8.0M· 0.3% of total· 0.0% port· 84K sh· $-10.1M QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$7.6M· 0.3% of total· 0.0% port· 80K sh· +$7.1M QoQ· Q2 2026
Bridgewater Associates, LPReduced
Hedge Fund
$6.9M· 0.2% of total· 0.0% port· 73K sh· $-3.9M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$5.2M· 0.2% of total· 0.0% port· 55K sh· $-4.9M QoQ· Q2 2026
Alphadyne Asset Management LPReduced
Hedge Fund
$2.9M· 0.1% of total· 0.0% port· 30K sh· $-914K QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$1.7M· 0.1% of total· 0.0% port· 18K sh· $-4.7M QoQ· Q2 2026
Gotham Asset Management, LLCUnchanged
Hedge Fund
$1.3M· 0.0% of total· 0.0% port· 14K sh· +$0 QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$850K· 0.0% of total· 0.0% port· 9K sh· — QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$792K· 0.0% of total· 0.0% port· 8K sh· $-12.2M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$697K· 0.0% of total· 0.0% port· 7K sh· $-10.1M QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$432K· 0.0% of total· 0.0% port· 5K sh· — QoQ· Q2 2026
Bridgewater Advisors Inc.Reduced
Hedge Fund
$409K· 0.0% of total· 0.0% port· 4K sh· $-14K QoQ· Q2 2026
DODGE & COXUnchanged
Institutional Manager
$285K· 0.0% of total· 0.0% port· 3K sh· +$0 QoQ· Q2 2026
BAILLIE GIFFORD & COReduced
Institutional Manager
$50K· 0.0% of total· 0.0% port· 524 sh· $-36K QoQ· Q2 2026
Ancora Advisors, LLCReduced
Hedge Fund
$10K· 0.0% of total· 0.0% port· 101 sh· $-32K QoQ· Q2 2026
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