Rio Tinto (RIO)
Anglo-Australian dual-listed mining group and one of the world's largest producers of iron ore, aluminium and copper. Founded in 1873 to mine the Rio Tinto site in Spain, it now operates principally in Australia and the Americas.
- Legal name
- Rio Tinto plc
- Ticker
- RIO
- Exchange
- London Stock Exchange · MIC XLON
- Country
- United Kingdom
- Sector
- Materials
- Industry
- Diversified mining
- Market cap ≈
- $178.5bn — computed, not copied: 2 separately listed lines priced on their own markets, close 2026-08-28
- Reporting currency
- GBP
- Founded
- 1873
- Website
- www.riotinto.com
- LEI
- 213800YOEO5OQ72G2R82 (GLEIF)
- ISIN
- GB0007188757 (check digit validated)
- FIGI
- BBG001S6W9Q0 (share class, OpenFIGI)
Graph connections view in graph →
lists_onLondon Stock Exchange
domiciled_inUnited Kingdom
member_ofFTSE 100
Sector peers — Materials
Compare: RIO vs SHW · RIO vs APD · RIO vs BHP
How this market cap is arrived at
| Shares outstanding | 1,627,871,918 |
| Basis | sum of separately listed lines |
| As of | 2026-07-31 |
| Source | Rio Tinto plc 'Total Voting Rights and Issued Capital' RNS dated 3 August 2026 (as of 31 July 2026) |
| Rio Tinto plc | 1,256,050,704 × 7674 GBp (RIO.L) |
| Rio Tinto Limited | 371,821,214 × 178.04 AUD (RIO.AX) |
| Priced on | close 2026-08-28, converted at the ECB reference rate |
| Market cap | $178.5bn |
Rio Tinto is a dual-listed company: Rio Tinto plc (1,256,050,704 shares, priced in London) and Rio Tinto Limited (371,821,214 shares, priced in Sydney) are separate legal entities. The figure here covers the plc leg, about 77% of the group, and the market cap below is therefore the plc leg only. Rio Tinto is a dual-listed company: Rio Tinto plc in London and Rio Tinto Limited in Sydney are separate legal entities whose shares trade on their own markets. Both legs are priced and summed, which is the whole-group figure.
Share counts move on a filing cadence, prices move continuously — so this figure is exact only as of the two dates above, and we publish both rather than a single undated number. This company is quoted here through a depositary receipt (RIO), where one receipt represents 1 ordinary share; the price is put on an ordinary-share basis before it meets the share count. Provenance.
Fundamentals
| From the 20-F for the year ended 2025-12-31 | USD | As reported |
|---|---|---|
| Net incomeifrs-full:ProfitLoss | $10.2bn | |
| Research & developmentifrs-full:ResearchAndDevelopmentExpense | $524m | |
| Total assetsifrs-full:Assets | $128.1bn |
Market cap / net income 17.4× — a market value from 2026-08-28 divided by earnings for a year that ended 2025-12-31. The two dates are far apart on purpose: this is arithmetic on two published numbers, not a valuation.
Every figure above is read from the same 20-F, filed 2026-02-19, and each row names the XBRL tag it came from so it can be checked against the document. Metrics absent from that filing are absent here rather than sourced from a different year — a table mixing periods is individually true and collectively meaningless.
Identifier crosswalk
| Standard | Value | What it answers |
|---|---|---|
| Ticker | RIO | Venue-local shorthand — ambiguous across markets |
| MIC | XLON | ISO 10383 — the venue |
| ISIN | GB0007188757 | ISO 6166 — the security |
| LEI | 213800YOEO5OQ72G2R82 | ISO 17442 — the legal entity |
| FIGI | BBG001S6W9Q0 | OpenFIGI — instrument, share class |
5 naming systems for one entity — only codes we actually hold are listed, with no gaps filled by guessing. Sources: LEI from GLEIF (CC0), ISIN read from the issuer's own primary listing document, with its ISO 6166 check digit validated, FIGI from OpenFIGI (open standard), MIC from the ISO 10383 registry. Each linked code opens its reverse-lookup page; the validator checks any code's check digit. seed-0.7 · marketcap-1 · 2026-08-30.
Approximate reference values from public sources · seed-0.7 · marketcap-1 · 2026-08-30 · not real-time. See data & methodology.
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