Rio Tinto ADR (RIO) short interest & short volume · 0.8% of float short
Rio Tinto ADR official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
RIO short interest fell 1.0% to 9.2M shares in the Oct 15, 2026 report (0.8% of float, 4.6 days to cover). Daily short volume averaged 36.4% of volume over the last 20 sessions, down from 40.9% the 20 sessions before, the 3rd percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 9.2M
- prior 9.3M
- % of float
- 0.8%
- float 1.24B
- Days to cover
- 4.6
- avg vol 2.0M
- Change vs prior report
- -1.0%
Days to cover is short interest divided by FINRA's average daily volume for the period: how many average days of trading it would take shorts to buy back.
% of float uses the current float for every report (no float was stored with older reports).
Source: FINRA equity short interest (twice monthly) · Settlement Oct 15, 2026
Daily short volume
Share of each day's volume sold short · FINRA Reg SHO
- Latest (Nov 2)
- 25.8%
- 292K of 1.1M
- 20-day average
- 36.4%
- prior 40.9%
- Percentile vs own history
- 3rd
- 233 periods since 2025
Loading prices…
Source: FINRA Reg SHO daily short sale volume · Latest Nov 2, 2026
Short squeeze score (model)
Price since settlement: -9.5%
Model, not a forecast: 40 pts short interest % of float (full at 30%), 25 pts days to cover (full at 10), 15 pts rise in short interest since the prior report (full at +50%), 20 pts price gain since the settlement date (full at +25%). Missing inputs score 0.
RIO's squeeze score and its inputs with Lician Pro.Start 3-day trial — $149/yr
Market-wide: most shorted stocks, biggest changes and unusual short volume · RIO overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 292,132 | 1,132,022 | 25.8% |
| 2026-10-30 | 677,897 | 1,265,022 | 53.6% |
| 2026-10-29 | 1,412,388 | 2,627,282 | 53.8% |
| 2026-10-28 | 271,442 | 736,034 | 36.9% |
| 2026-10-27 | 286,137 | 861,289 | 33.2% |
| 2026-10-26 | 271,031 | 890,425 | 30.4% |
| 2026-10-23 | 293,408 | 849,658 | 34.5% |
| 2026-10-22 | 320,841 | 1,116,877 | 28.7% |
| 2026-10-21 | 398,701 | 1,032,447 | 38.6% |
| 2026-10-20 | 337,784 | 1,076,807 | 31.4% |
Materials peers with similar quant ratings
RIO is rated 3.18 of 5 among 146 rated Materials stocks (Lician quant rating, Nov 4, 2026). How the rating works
- ODC short interest3.29 · Hold · stock
- SXC short interest3.26 · Hold · stock
- AXTA short interest3.23 · Hold · stock
- WDFC short interest3.21 · Hold · stock
- JHX short interest3.15 · Hold
- EMN short interest3.12 · Hold · stock
- CLF short interest3.10 · Hold · stock
- MLM short interest3.07 · Hold · stock
RIO short interest FAQ
What is RIO's short interest?
Rio Tinto ADR (RIO) had 9.2M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 0.8% of its 1.24B-share float.
How many days to cover does RIO have?
4.6 days: 9.2M shares short divided by an average daily volume of 2.0M for the Oct 15, 2026 period.
Is RIO short interest rising or falling?
RIO short interest fell (-1.0%) from 9.3M to 9.2M shares in the Oct 15, 2026 report.
Is RIO a short squeeze candidate?
Lician's squeeze watch scores RIO 13 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 1/40, days to cover 11.5/25, change in short interest vs prior report 0/15, price change since settlement date 0/20. It is a transparent model of how crowded the short side is, not a forecast that a squeeze will happen.
What share of RIO daily volume is sold short?
36.4% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 3rd percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was RIO's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Rio Tinto ADR (RIO) was 292,132 shares, 25.8% of 1,132,022 total volume.
How many RIO short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Rio Tinto ADR (RIO), from Oct 20, 2026 through Nov 2, 2026.
How did RIO short volume percent change from the prior cached session?
Cached FINRA short volume for Rio Tinto ADR (RIO) moved from 53.6% on Oct 30, 2026 to 25.8% on Nov 2, 2026, down 27.8 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.