The largest holder of Rio Tinto Group stock is Aluminum Corporation Of China Limited, with 182.6 million shares (14.54% of the company), worth about $19.02 billion as of September 25, 2026. The 10 largest holders together own 53.7%.
In Q2 2026, 1,026 institutional holdings reports listed 129.0 million shares worth $12.20 billion, up 1.6% in shares from Q1 2026.
Insiders reported 19 transactions in the last two years: no sales and no purchases. The newest one on file is from April 16, 2026 (Nason (Jennifer A.), --).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through April 16, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Aluminum Corporation Of China Limited | 182.6 million | 14.54% | $19.0B |
| Bank Of China Limited | 182.6 million | 14.54% | $19.0B |
| BlackRock Investment Management (UK) Ltd. | 93.9 million | 7.48% | $9.8B |
| Australiansuper Pty Ltd. (Investment Management) | 53.7 million | 4.28% | $5.6B |
| Capital Research & Management Co. (Global Investors) | 38.0 million | 3.03% | $4.0B |
| Vanguard Capital Management LLC | 32.9 million | 2.63% | $3.4B |
| Norges Bank Investment Management | 28.2 million | 2.25% | $2.9B |
| JPMorgan Asset Management (UK) Ltd. | 22.8 million | 1.82% | $2.4B |
| Fisher Asset Management LLC | 21.8 million | 1.74% | $2.3B |
| BlackRock Advisors (UK) Ltd. | 18.0 million | 1.43% | $1.9B |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,026 | 129.0 million | $12.2B |
| Q1 2026 | 1,009 | 127.0 million | $11.9B |
| Q4 2025 | 949 | 129.0 million | $10.3B |
| Q3 2025 | 830 | 127.0 million | $8.4B |
| Q2 2025 | 813 | 125.0 million | $7.3B |
| Q1 2025 | 838 | 137.0 million | $8.0B |
| Q4 2024 | 807 | 131.0 million | $7.7B |
| Q3 2024 | 811 | 134.0 million | $9.5B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Nason (Jennifer A.) | Apr 16, 2026 | -- | Bought at price 99.79 per share. | $5,288 |
| Madhavpeddi (Kalidas) | Jan 21, 2026 | -- | -- | – |
| Dodge & Cox | Jan 20, 2026 | -- | -- | – |
| Unisuper Management Pty. Ltd. | Jan 15, 2026 | -- | Sold at price 85.73 per share. | $22,975 |
| Australian Superannuation Savings Employment Trust | Jan 14, 2026 | -- | -- | – |
| Macquarie Group, Ltd. | Jan 14, 2026 | -- | -- | – |
| Unisuper Management Pty. Ltd. | Jan 14, 2026 | -- | Sold at price 85.60 per share. | $11,042 |
| Australian Superannuation Savings Employment Trust | Jan 13, 2026 | -- | -- | – |
| The Capital Group Companies | Jan 13, 2026 | -- | Bought at price 82.88 per share. | $162,610 |
| The Capital Group Companies | Jan 13, 2026 | -- | Sold at price 82.88 per share. | $1,408 |
| Australian Superannuation Savings Employment Trust | Jan 12, 2026 | -- | -- | – |
| The Capital Group Companies | Jan 12, 2026 | -- | Bought at price 81.13 per share. | $184,165 |
Newest 12 of 19 insider transactions in the last two years.
Aluminum Corporation Of China Limited, with 14.54% of the company (as of September 25, 2026). Next: Bank Of China Limited (14.54%) and BlackRock Investment Management (UK) Ltd. (7.48%).
1,026 institutional holdings reports listed Rio Tinto Group shares in Q2 2026, 129.0 million shares in all worth $12.20 billion.
In the last two years insiders reported no sales and no purchases (19 transactions in all); the newest on file is from April 16, 2026.