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| Date | Price | ShortShort interest | Shares short | Volume | GrossGross daily |
|---|---|---|---|---|---|
| Fri, 16 Oct | $154.93 | Pending | – | 3.1M | – |
| Thu, 15 Oct | $152.70 | Pending | – | 3.0M | – |
| Wed, 14 Oct | $160.48 | Pending | – | 1.5M | – |
| Tue, 13 Oct | $161.00 | Pending | – | 1.0M | – |
| Mon, 12 Oct | $164.96 | 9.65% | 35.9M | 703K | – |
| Fri, 9 Oct | $162.37 | 9.52% | 35.4M | 724K | – |
| Thu, 8 Oct | $161.97 | 9.37% | 34.8M | 1.1M | – |
| Wed, 7 Oct | $166.74 | 9.74% | 36.2M | 1.4M | – |
| Tue, 6 Oct | $167.77 | 9.77% | 36.3M | 833K | – |
| Mon, 5 Oct | $165.96 | 9.80% | 36.4M | 503K | – |
| Fri, 2 Oct | $164.81 | 9.76% | 36.3M | 1.3M | – |
| Thu, 1 Oct | $162.85 | 9.78% | 36.4M | 1.4M | – |
| Wed, 30 Sept | $166.93 | 9.88% | 36.7M | 1.4M | – |
| Tue, 29 Sept | $164.37 | 9.85% | 36.6M | 907K | – |
| Mon, 28 Sept | $163.04 | 9.86% | 36.6M | 870K | – |
| Fri, 25 Sept | $164.85 | 9.88% | 36.7M | 886K | – |
| Thu, 24 Sept | $166.46 | 9.81% | 36.5M | 699K | – |
| Wed, 23 Sept | $167.61 | 9.79% | 36.4M | 515K | – |
| Tue, 22 Sept | $166.30 | 9.60% | 35.7M | 487K | – |
| Mon, 21 Sept | $166.12 | 9.79% | 36.4M | 503K | – |
| Fri, 18 Sept | $167.49 | 9.84% | 36.6M | 1.7M | – |
| Thu, 17 Sept | $166.09 | 9.91% | 36.9M | 1.0M | – |
| Wed, 16 Sept | $166.25 | 9.89% | 36.8M | 848K | – |
| Tue, 15 Sept | $164.50 | 9.91% | 36.9M | 752K | – |
| Mon, 14 Sept | $168.20 | 9.94% | 37.0M | 813K | – |
| Fri, 11 Sept | $168.30 | 9.93% | 36.9M | 1.1M | – |
| Thu, 10 Sept | $174.47 | 9.82% | 36.5M | 1.2M | – |
| Wed, 9 Sept | $179.33 | 10.00% | 37.2M | 919K | – |
| Tue, 8 Sept | $176.00 | 9.98% | 37.1M | 856K | – |
| Mon, 7 Sept | $177.36 | 9.99% | 37.1M | 969K | – |
| Fri, 4 Sept | $175.90 | 10.05% | 37.4M | 1.1M | – |
| Thu, 3 Sept | $177.11 | 9.60% | 35.7M | 683K | – |
| Wed, 2 Sept | $174.88 | 9.92% | 36.9M | 1.0M | – |
| Tue, 1 Sept | $177.51 | 9.84% | 36.6M | 716K | – |
| Mon, 31 Aug | $174.81 | 9.83% | 36.5M | 1.4M | – |
| Fri, 28 Aug | $178.04 | 9.79% | 36.4M | 1.2M | – |
| Thu, 27 Aug | $178.70 | 9.81% | 36.5M | 1.6M | – |
| Wed, 26 Aug | $179.63 | 9.72% | 36.2M | 1.2M | – |
| Tue, 25 Aug | $179.29 | 9.74% | 36.2M | 833K | – |
| Mon, 24 Aug | $177.43 | 9.49% | 35.3M | 991K | – |
Short interest is ASIC's reported position, four business days behind. Gross daily is that day's gross short selling as a share of ASX volume.
Most shorted in Materials
View allAll MaterialsRio Tinto Group (RIO) Short Interest Summary
Rio Tinto Group (RIO) currently has 9.65% of its shares sold short (35.9 million shares, worth approximately $5.6 billion), based on ASIC short position data reported on 12 October 2026 (T+4 reporting lag). That makes RIO the #19 most shorted stock on the ASX most shorted list. Short interest in RIO is down 0.14% over the past week and down 0.28% over the past month. RIO is part of the Materials sector on the ASX.
RIO Short Selling: Frequently Asked Questions
What is Rio Tinto Group (RIO)'s current short interest?
Rio Tinto Group (RIO) currently has a short interest of 9.65% of total shares outstanding. This means 9.65% of RIO's shares have been sold short by investors who expect the price to decline. This data is sourced from ASIC reports and updated daily.
Is RIO heavily shorted on the ASX?
RIO has a moderate level of short interest at 9.65%. While below the heavily shorted threshold of 10%, this indicates notable bearish positioning. RIO is currently ranked #19 among the most shorted stocks on the ASX.
What does short interest mean for RIO investors?
Short interest in RIO shows the percentage of shares investors have borrowed and sold, betting the price will fall. At 9.65%, RIO's short interest is at a moderate level. See our short squeeze candidates and days to cover analysis for more context.
Where does this RIO short data come from?
Short position data is published by ASIC with a four trading day delay (T+4) and covers reported short positions as a percentage of total shares on issue. ASX Short Data also tracks daily gross short sales (T+1), securities lending, and director trades for RIO.