Shares Outstanding: 1.64B
The shares outstanding is 1.64B. It is above its 12-month average by 0.10% (1.64B).
RIO Shares Outstanding
Reported quarterly weighted average share count; no daily interpolation.
RIO Average Shares Outstanding Chart
RIO Current vs Average Shares Outstanding Chart
RIO Shares Outstanding Metrics
SHARES OUTSTANDING
1.64B
SHARES OUTSTANDING AVG TTM
1.64B
SHARES OUTSTANDING AVG 3Y
1.63B
SHARES OUTSTANDING AVG 5Y
1.63B
SHARES OUTSTANDING AVG 10Y
1.68B
SHARES OUTSTANDING AVG 15Y
N/A
SHARES OUTSTANDING AVG 20Y
N/A
CURRENT VS TTM AVG
+0.10%
CURRENT VS 3Y AVG
+0.28%
CURRENT VS 5Y AVG
+0.39%
CURRENT VS 10Y AVG
-2.68%
CURRENT VS 15Y AVG
N/A
CURRENT VS 20Y AVG
N/A
Share Structure
Shares Outstanding
1.62B
Float Shares
N/A
Stock Price
$93.74
Market Cap
$152.2B
Quarterly Shares Outstanding History
| Period | Weighted Average Shares | QoQ Change |
|---|---|---|
| Q4 2025 | 1.64B | +0.05% |
| Q2 2025 | 1.64B | +0.20% |
| Q4 2024 | 1.63B | +0.13% |
| Q2 2024 | 1.63B | -0.03% |
| Q4 2023 | 1.63B | +0.17% |
| Q2 2023 | 1.63B | -0.09% |
| Q4 2022 | 1.63B | +0.17% |
| Q2 2022 | 1.63B | -0.03% |
| Q4 2021 | 1.63B | +0.05% |
| Q2 2021 | 1.63B | -0.00% |
| Q4 2020 | 1.63B | -0.01% |
| Q2 2020 | 1.63B | -0.48% |
| Q4 2019 | 1.64B | -0.66% |
| Q2 2019 | 1.65B | -3.70% |
| Q4 2018 | 1.71B | -2.40% |
| Q2 2018 | 1.75B | -2.09% |
| Q4 2017 | 1.79B | -1.05% |
| Q2 2017 | 1.81B | -0.17% |
| Q4 2016 | 1.81B | +0.39% |
| Q2 2016 | 1.81B | -0.30% |
| Q4 2015 | 1.81B | -2.29% |
| Q2 2015 | 1.85B | -0.38% |
| Q4 2014 | 1.86B | +0.14% |
| Q2 2014 | 1.86B | -0.03% |
| Q4 2013 | 1.86B | +0.03% |
| Q2 2013 | 1.86B | - |
Relationship: Market Cap = Shares Outstanding × Stock Price
Key concepts:
- Float shares: Shares available for public trading
- Dilution: When new shares are issued, existing shareholders own less
- Buybacks: Reduce share count, increasing EPS and ownership stake
- Stock splits: Increase share count but don't change market cap
Shares Outstanding Formula & Definition
Shares Outstanding represents the reported weighted average share count used for per-share metrics. Changes in share count affect EPS and ownership dilution.
Expanded definitions: Investopedia, Wikipedia, Corporate Finance Institute
Shares Outstanding FAQ
- What is the shares outstanding for Rio Tinto Group (RIO)?
- The shares outstanding for RIO stock is 1.64B.
- What is the TTM average shares outstanding for Rio Tinto Group (RIO)?
- The TTM average shares outstanding for RIO stock is 1.64B.
- What is the 3Y average shares outstanding for Rio Tinto Group (RIO)?
- The 3Y average shares outstanding for RIO stock is 1.63B.
- What is the 5Y average shares outstanding for Rio Tinto Group (RIO)?
- The 5Y average shares outstanding for RIO stock is 1.63B.
- What is the 10Y average shares outstanding for Rio Tinto Group (RIO)?
- The 10Y average shares outstanding for RIO stock is 1.68B.
RIO Shares Outstanding History
| DATE | SHARES OUTSTANDING |
|---|---|
| 2025-12-31 | 1.64B |
| 2025-06-30 | 1.64B |
| 2024-12-31 | 1.63B |
| 2024-06-30 | 1.63B |
| 2023-12-31 | 1.63B |
| 2023-06-30 | 1.63B |
| 2022-12-31 | 1.63B |
| 2022-06-30 | 1.63B |
| 2021-12-31 | 1.63B |
| 2021-06-30 | 1.63B |
| 2020-12-31 | 1.63B |
| 2020-06-30 | 1.63B |
| 2019-12-31 | 1.64B |
| 2019-06-30 | 1.65B |
| 2018-12-31 | 1.71B |
| 2018-06-30 | 1.75B |
| 2017-12-31 | 1.79B |
| 2017-05-31 | 1.81B |
| 2016-12-31 | 1.81B |
| 2016-06-30 | 1.81B |
| 2015-12-31 | 1.81B |
| 2015-06-30 | 1.85B |
| 2014-12-31 | 1.86B |
| 2014-06-30 | 1.86B |
| 2013-12-31 | 1.86B |
| 2013-06-30 | 1.86B |
Related Metrics
About Rio Tinto Group
Rio Tinto Group engages in exploring, mining, and processing mineral resources worldwide. The company operates through Iron Ore; Aluminium and lithium; and Copper segments. The Iron Ore segment engages in the iron ore mining, and salt and gypsum production in Western Australia. The Aluminum and lithium segment is involved in bauxite mining; alumina refining; and aluminium smelting, and recycling, as well as mining and processing of lithium. The Copper segment engages in mining and refining of copper, gold, silver, molybdenum, and other by-products and exploration activities. It also owns and operates open pit and underground mines; and refineries, smelters, processing plants and power, and shipping facilities. The company was founded in 1873 and is headquartered in London, the United Kingdom.
- Sector
- Basic Materials
- Industry
- Industrial Materials
- CEO
- Simon Callas Trott