RIO Tinto Ltd (AU:RIO) — Market Cap & Net Worth

$45.18 Billion USD · AU$63.85 Billion AUD · Rank #580

Market Cap & Net Worth: RIO Tinto Ltd (RIO)

RIO Tinto Ltd (AU:RIO) has a market capitalization of $45.18 Billion (AU$63.85 Billion) as of May 5, 2026. Listed on the AU stock exchange, this Australia-based company holds position #580 globally and #10 in its home market, demonstrating a 0.01% increase in market value over the past year.

Market capitalization, also known as net worth in stock markets, is calculated by multiplying RIO Tinto Ltd's stock price AU$171.97 by its total outstanding shares 371275238 (371.28 Million). Analyse RIO cash flow metrics to see how efficiently the company converts income to cash.

RIO Tinto Ltd Market Cap History: 2015 to 2026

RIO Tinto Ltd's market capitalization history from 2015 to 2026. Data shows growth from $7.52 Billion to $45.18 Billion (16.57% CAGR).

Index Memberships

RIO Tinto Ltd is a constituent of 10 market indices:

Index	Total Market Cap	Weight (%)	Rank by Market Cap
S&P/ASX 50 AFLI	$1.60 Trillion	2.83%	#9 of 50
Australia All Ordinaries AORD	$1.97 Trillion	2.30%	#8 of 495
S&P/ASX 20 ATLI	$1.20 Trillion	3.76%	#8 of 20
S&P/ASX 100 ATOI	$1.83 Trillion	2.47%	#9 of 100
S&P/ASX All Australian 50 AXAF	$1.49 Trillion	3.04%	#8 of 50
S&P/ASX All Australian 200 AXAT	$1.88 Trillion	2.40%	#8 of 200
S&P/ASX 200 AXJO	$1.85 Trillion	2.44%	#8 of 200
S&P/ASX 200 Accumulated AXJOA	$1.85 Trillion	2.44%	#8 of 200
S&P/ASX 300 AXKO	$2.13 Trillion	2.13%	#9 of 300
S&P/ASX 300 Metals & Mining AXMM	$443.62 Billion	10.18%	#2 of 40

Weight: RIO Tinto Ltd's market cap as a percentage of total index value. Rank: Position among all constituents by market cap.

RIO Tinto Ltd Market Cap to Earnings & Revenue Ratios Timeline

This chart shows how RIO Tinto Ltd's valuation ratios have evolved. The Price to Sales (P/S) ratio compares market cap to revenue, while the Price to Earnings (P/E) ratio compares market cap to net income. Lower values may indicate a more undervalued company relative to its financial performance.

Latest Price to Sales (P/S) Ratio

0.65x

RIO Tinto Ltd's market cap is 0.65 times its annual revenue

Industry average: 345.62x Lower than industry average

Latest Price to Earnings (P/E) Ratio

3.74x

RIO Tinto Ltd's market cap is 3.74 times its annual earnings

Industry average: 6.85x Lower than industry average

What These Ratios Tell Investors:

Price to Sales (P/S) Ratio: Shows how much investors are paying for each dollar of the company's sales. Lower P/S ratios may indicate undervaluation.
Price to Earnings (P/E) Ratio: Shows how much investors are paying for each dollar of the company's earnings. This is one of the most common valuation metrics.
Trends in these ratios over time can indicate changing investor sentiment about the company's future growth prospects.
Industry comparison provides context for whether the company is valued higher or lower than peers.

Year	Market Cap (USD)	Revenue (USD)	Net Income (USD)	P/S Ratio	P/E Ratio
2016	$10.56 Billion	$33.78 Billion	$4.62 Billion	0.31x	2.29x
2017	$13.98 Billion	$40.03 Billion	$8.76 Billion	0.35x	1.60x
2018	$15.22 Billion	$40.52 Billion	$13.64 Billion	0.38x	1.12x
2019	$20.69 Billion	$43.16 Billion	$8.01 Billion	0.48x	2.58x
2020	$24.93 Billion	$44.61 Billion	$9.77 Billion	0.56x	2.55x
2021	$22.57 Billion	$63.49 Billion	$21.09 Billion	0.36x	1.07x
2022	$27.49 Billion	$55.55 Billion	$12.42 Billion	0.49x	2.21x
2023	$33.68 Billion	$54.04 Billion	$10.06 Billion	0.62x	3.35x
2024	$30.86 Billion	$53.66 Billion	$11.55 Billion	0.58x	2.67x
2025	$38.57 Billion	$59.65 Billion	$10.31 Billion	0.65x	3.74x

Competitor Companies of RIO by Market Capitalization

Companies near RIO Tinto Ltd in the global market cap rankings as of May 5, 2026.

Key companies related to RIO Tinto Ltd by market ranking:

BHP Group (MX:BHPN): Ranked #99 globally with a market cap of $201.65 Billion USD ( MX$3.50 Trillion MXN).
BHP Group Ltd (AU:BHP): Ranked #105 globally with a market cap of $197.50 Billion USD ( AU$279.13 Billion AUD).
Rio Tinto Group (MX:RION): Ranked #185 globally with a market cap of $126.07 Billion USD ( MX$2.19 Trillion MXN).
Rio Tinto Group (F:RIOA): Ranked #247 globally with a market cap of $99.40 Billion USD ( €85.02 Billion EUR).

Market capitalization comparison (in billions USD)

Rank	Company	Symbol	Market Cap	Price
#99	BHP Group	MX:BHPN	$201.65 Billion	MX$1380.00
#105	BHP Group Ltd	AU:BHP	$197.50 Billion	AU$54.94
#185	Rio Tinto Group	MX:RION	$126.07 Billion	MX$1746.90
#247	Rio Tinto Group	F:RIOA	$99.40 Billion	€81.00

RIO Tinto Ltd Historical Marketcap From 2015 to 2026

Between 2015 and today, RIO Tinto Ltd's market cap moved from $7.52 Billion to $ 45.18 Billion, with a yearly change of 16.57%.

Year	Market Cap	Change (%)
2026	AU$45.18 Billion	+17.13%
2025	AU$38.57 Billion	+25.00%
2024	AU$30.86 Billion	-8.37%
2023	AU$33.68 Billion	+22.50%
2022	AU$27.49 Billion	+21.83%
2021	AU$22.57 Billion	-9.48%
2020	AU$24.93 Billion	+20.47%
2019	AU$20.69 Billion	+35.92%
2018	AU$15.22 Billion	+8.92%
2017	AU$13.98 Billion	+32.36%
2016	AU$10.56 Billion	+40.34%
2015	AU$7.52 Billion	--

End of Day Market Cap According to Different Sources

On May 4th, 2026 the market cap of RIO Tinto Ltd was reported to be:

Source	Market Cap
Yahoo Finance	$45.18 Billion USD
MoneyControl	$45.18 Billion USD
MarketWatch	$45.18 Billion USD
marketcap.company	$45.18 Billion USD
Reuters	$45.18 Billion USD

Market cap values may vary slightly between sources due to differences in calculation methods, timing, and data refresh rates.

About RIO Tinto Ltd

AU:RIO Australia Other Industrial Metals & Mining

Market Cap

$45.18 Billion

AU$63.85 Billion AUD

Market Cap Rank

#580 Global

#10 in Australia

Share Price

AU$171.97

Change (1 day)

+2.73%

52-Week Range

AU$101.83 - AU$174.29

All Time High

AU$174.29