Rio Tinto
Rio Tinto is a leading global mining group that focuses on finding, mining, and processing the Earth's mineral resources. The company operates in various segments including copper, gold, iron ore, coal, aluminium, borates, and titanium dioxide. With a strong market position, Rio Tinto is known for its commitment to sustainable mining practices and innovation in resource extraction.
Short position
Rio Tinto (ASX:RIO) has 9.80% of its shares on issue reported as short positions as of 5 Oct 2026, or about 36,433,596 shares. Over the past 30 days that figure has fallen 0.25 percentage points, and over 90 days it has risen 0.73 percentage points. Its highest recorded short interest was 10.08% in August 2026. RIO is classified in the Materials industry. All figures come from official ASIC short position reports, published with a four trading-day (T+4) delay.
Price & short interest
Toggle series, zoom, and compare · ASIC daily, T+4Rio Tinto (RIO) short interest history
RIO Short Interest History
- 30-day change
- -0.25pp
- 90-day change
- +0.73pp
- 1-year change
- +3.55pp
- All-time high
- 10.08% (August 2026)
- All-time low
- 0.21% (September 2021)
Is RIO heavily shorted?
RIO's short interest of 9.80% is elevated relative to the ASX average, ranking #16 of 799 ASX securities with reported short positions. ASIC requires positions of 0.01% of issued capital or $100,000 (whichever is less) to be reported.
How has RIO's short interest changed recently?
Over the past 30 days Rio Tinto's short interest has been broadly stable, and over 90 days it has risen 0.73 percentage points. The current level is 9.80% of shares on issue.
What is the highest RIO's short interest has been?
Since 2010, Rio Tinto's short interest peaked at 10.08% in August 2026 and bottomed at 0.21% in September 2021.
Where does this data come from?
All figures are sourced from daily ASIC short position reports, published with a four trading-day (T+4) delay. Shorted aggregates the full history since 2010. See our methodology.