Ticker · CUSIP 767204100

RIO

ADR
RIO TINTO PLC
Basic Materials·Other Industrial Metals & Mining
···Share
Holders (tracked)
23
Combined shares
25,187,511
Combined value
$2.02B
Last close
$99.71
Quarter
2025Q4
Tracked holders · last 8 quarters
+8 vs previous quarter over the last 8.
23172024Q12025Q4
Price is +24.6% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

27 events
  1. Jeremy Grantham (GMO) added2026-02-17
    +441,799 shares · 2025Q4
    13F
  2. Ken Griffin (Citadel Advisors) added2026-02-17
    +274,180 shares · 2025Q4
    13F
  3. D.E. Shaw & Co. trimmed2026-02-17
    −1,007,751 shares · 2025Q4
    13F
  4. Izzy Englander (Millennium Mgmt) trimmed2026-02-17
    −877,221 shares · 2025Q4
    13F
  5. Steve Cohen (Point72) opened position2026-02-17
    +6,500 shares · 2025Q4
    13F
  6. Wellington Management added2026-02-17
    +268,129 shares · 2025Q4
    13F
  7. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +172,801 shares · 2025Q4
    13F
  8. AQR Capital Management added2026-02-17
    +22,185 shares · 2025Q4
    13F
  9. Two Sigma Investments opened position2026-02-17
    +5,553 shares · 2025Q4
    13F
  10. Ray Dalio (Bridgewater Associates) added2026-02-13
    +5,389 shares · 2025Q4
    13F
  11. Dodge & Cox opened position2026-02-13
    +3,000 shares · 2025Q4
    13F
  12. Renaissance Technologies trimmed2026-02-12
    −1,024,200 shares · 2025Q4
    13F
  13. Norges Bank (Norway SWF) opened position2026-02-10
    +7,353 shares · 2025Q4
    13F
  14. Ken Fisher (Fisher Asset Mgmt) added2026-02-09
    +522,576 shares · 2025Q4
    13F
  15. Baillie Gifford & Co added2026-01-23
    +177 shares · 2025Q4
    13F
  16. Paul Tudor Jones (Tudor Investment) exited2025-12-09
    −153,619 shares · 2025Q3
    13F
  17. D.E. Shaw & Co. trimmed2025-11-14
    −66,018 shares · 2025Q3
    13F
  18. AQR Capital Management added2025-11-14
    +19,433 shares · 2025Q3
    13F
  19. Izzy Englander (Millennium Mgmt) added2025-11-14
    +329,691 shares · 2025Q3
    13F
  20. Wellington Management trimmed2025-11-14
    −3,967,802 shares · 2025Q3
    13F
  21. Norges Bank (Norway SWF) exited2025-11-13
    −7,353 shares · 2025Q3
    13F
  22. Renaissance Technologies trimmed2025-11-13
    −45,000 shares · 2025Q3
    13F
  23. Jeremy Grantham (GMO) added2025-11-13
    +199,962 shares · 2025Q3
    13F
  24. Dodge & Cox exited2025-11-13
    −4,000 shares · 2025Q3
    13F
  25. Ray Dalio (Bridgewater Associates) trimmed2025-11-13
    −613,812 shares · 2025Q3
    13F
  26. Ken Fisher (Fisher Asset Mgmt) added2025-11-12
    +557,234 shares · 2025Q3
    13F
  27. Baillie Gifford & Co added2025-10-31
    +147 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
View full insider history for RIO →
Follow-the-investor returns
If you'd copied each holder of RIO…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
Dodge & Cox2016Q1$28.29+252.4%$299K
Wellington Management2016Q1$57.48+73.5%$88.5M
Ken Fisher (Fisher Asset Mgmt)2016Q1$59.24+68.3%$1.96B
Renaissance Technologies2016Q1$60.50+64.8%$18.6M
Steve Cohen (Point72)2017Q2$63.70+56.5%$648K
Two Sigma Investments2016Q1$64.35+54.9%$554K
Norges Bank (Norway SWF)2020Q1$65.99+51.1%$733K
Jeremy Grantham (GMO)2022Q1$67.64+47.4%$156.4M
Baillie Gifford & Co2016Q1$69.88+42.7%$52K
D.E. Shaw & Co.2016Q1$69.96+42.5%$1.3M
D.E. Shaw & Co.2016Q1$69.96+42.5%$1.3M
D.E. Shaw & Co.2016Q1$69.96+42.5%$1.3M
Ken Griffin (Citadel Advisors)2016Q1$70.91+40.6%$87.2M
Ken Griffin (Citadel Advisors)2016Q1$70.91+40.6%$87.2M
Ken Griffin (Citadel Advisors)2016Q1$70.91+40.6%$87.2M
AQR Capital Management2024Q2$70.95+40.5%$5.4M
Paul Tudor Jones (Tudor Investment)2020Q4$73.04+36.5%$5.0M
Paul Tudor Jones (Tudor Investment)2020Q4$73.04+36.5%$5.0M
Paul Tudor Jones (Tudor Investment)2020Q4$73.04+36.5%$5.0M
Ray Dalio (Bridgewater Associates)2016Q1$73.08+36.4%$943K
Izzy Englander (Millennium Mgmt)2016Q1$79.20+25.9%$9.8M
Izzy Englander (Millennium Mgmt)2016Q1$79.20+25.9%$9.8M
Izzy Englander (Millennium Mgmt)2016Q1$79.20+25.9%$9.8M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions5
Added to7
Trimmed3
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
17
$6.37B
2022Q2
19
$1.99B
2022Q3
19
$2.3M
2022Q4
18
$1.60B
2023Q1
21
$2.35B
2023Q2
20
$2.30B
2023Q3
18
$1.34B
2023Q4
16
$1.64B
2024Q1
17
$3.06B
2024Q2
19
$2.90B
2024Q3
18
$3.15B
2024Q4
20
$1.31B
2025Q1
20
$2.27B
2025Q2
21
$1.71B
2025Q3
15
$1.74B
2025Q4
23
$2.02B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-10-31Lisa McClainSell$1K – $15KPDF ↗
2025-10-30Lisa McClainSell$1K – $15KPDF ↗
2025-10-30Lisa McClainBuy$1K – $15KPDF ↗
2025-07-03Gilbert CisnerosSell$1K – $15KPDF ↗
2025-06-24Lisa McClainBuy$1K – $15KPDF ↗
2025-04-21Bruce WestermanSell$1K – $15KPDF ↗
2025-04-09Josh GottheimerSell (P)$1K – $15KPDF ↗
2025-03-03Bruce WestermanBuy$1K – $15KPDF ↗

Who owns RIO

23 super-investors · 2025Q4
Tracked stake
25.19M
shares
Combined value
$2.02B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New7Added9Trim7
#ManagerSharesValue
1Ken Fisher
Fisher Asset Mgmt
19.64M$1.57B
2Jeremy Grantham
GMO
1.57M$126M
3Wellington Management887.2K$71M
4Ken Griffin
Citadel Advisors
874.3K$70M
5Ken Griffin
Citadel Advisors
814.9K$65M
6Ken Griffin
Citadel Advisors
497.5K$40M
7Izzy Englander
Millennium Mgmt
203.1K$16M
8Renaissance Technologies186.6K$15M
9Paul Tudor Jones
Tudor Investment
172.8K$14M
10Izzy Englander
Millennium Mgmt
98.5K$8M
11Paul Tudor Jones
Tudor Investment
57.3K$5M
12AQR Capital Management54.0K$4M
13Paul Tudor Jones
Tudor Investment
50.4K$4M
14D.E. Shaw & Co.14.0K$1M
15D.E. Shaw & Co.13.4K$1M
16Izzy Englander
Millennium Mgmt
10.2K$816K
17D.E. Shaw & Co.10.0K$800K
18Ray Dalio
Bridgewater Associates
9.5K$757K
19Norges Bank
Norway SWF
7.4K$588K
20Steve Cohen
Point72
6.5K$520K
21Two Sigma Investments5.6K$444K
22Dodge & Cox3.0K$240K
23Baillie Gifford & Co524$42K

Recent moves

20 transactions
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