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Equibles

RIO · Rio Tinto PLC · Short Interest

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$91.25 -1.81 (-1.94%) At close · Oct 14
Rebalance outlook locked
Market Cap
$151.35B
Shares
1.63B
Volume · Oct 14 2.12M Avg daily vol (3M) 2.19M

Shares sold short and not yet covered, reported twice monthly. Days to cover is the reported short position divided by average daily volume.

Pull short interest history through the short interest API or MCP →

RIO Latest Reported Short Interest

FINRA reported 9,329,476 RIO shares sold short as of the September 30, 2026 settlement date, a decrease of 481,305 shares. Days to cover was 5.16 based on FINRA's reported average daily volume.

Official FINRA short-interest data · share counts are restated for subsequent splits of this listing

RIO Short Interest Forecast

Equibles' model estimates 9,304,674 shares sold short for the October 15, 2026 settlement, -0.3% versus the latest reported position, with a likely range of 8,201,239 to 10,395,643 shares. This model prediction uses FINRA data through October 14, 2026; FINRA's official release is expected October 26, 2026.

Model estimate

Expected Oct 15 short interest

as of Oct 14 Medium confidence 63% chance it falls
9,304,674 -0.3% vs reported
Likely range 8,201,239 to 10,395,643 The latest estimate appears in the chart below. Official release expected Oct 26. Methodology
Short Squeeze Score
46/100
Short interest 0.6% of shares — P34 Days to cover 5.2 — P71 Price vs VWAP -5.9% — P53 Short-volume trend -0.6% — P50 Short interest change -4.9% — P34 Worst FTD 0.00% of shares — P25

Positioning score 45.9 + catalyst boost 0 (total capped at 100). This is a screening index, not a probability of a squeeze.

Method and coverage limits

Factor percentiles compare eligible primary operating-company stocks reporting short interest at the latest settlement date (2026-09-30). The weighted mean uses short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, and fails-to-deliver 10%. Missing factors redistribute their weight; incomplete coverage is not evidence of low risk. Price, volume, and earnings boosts add 10 each, capped at 20.

Shares outstanding are not free float. Borrow fees, utilization, lendable supply, recalls, and dealer inventory are not measured. Short-sale volume does not measure the change in open shorts; fails to deliver are not a borrow-cost measurement; price vs VWAP does not establish short sellers' entry prices. Earnings can move prices in either direction.

The weights are judgment-based, not calibrated to future squeeze outcomes. The separate options assessment below does not change this universe ranking.

Options positioning & squeeze sensitivity

Nearest expiration after today within 30 calendar days; same-day expirations and later maturities are excluded.

Open interest is incomplete, stale, or dated inconsistently; positioning totals are unavailable.

Open interest has both a buyer and a seller; it does not reveal dealer hedge direction. Gross gamma sums both calls and puts without netting and uses a local 1% price-change approximation. It measures sensitivity, not predicted buying or a squeeze probability.

Assessment prepared 2026-10-15 01:39 UTC. Options model values may come from a cached snapshot; their original computation time is not supplied. Open interest has its own effective date.

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Dimensions
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    • Short Interest History

    Settlement Date Current Position Previous Position Change Days to Cover
    2026-10-30 Scheduled
    FINRA publishes Nov 10
    		 — — — —
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 9,329,476 9,810,781 -481,305 5.16
    2026-09-15 9,810,781 10,031,942 -221,161 5.65
    2026-08-31 10,031,942 8,989,331 +1,042,611 4.25
    2026-08-14 8,989,331 7,888,602 +1,100,729 4.15
    2026-07-31 7,888,602 9,263,337 -1,374,735 2.65
    2026-07-15 9,263,337 10,350,517 -1,087,180 3.20
    2026-06-30 10,350,517 11,757,878 -1,407,361 3.84
    2026-06-15 11,757,878 12,340,331 -582,453 4.18
    2026-05-29 12,340,331 11,758,168 +582,163 5.16
    2026-05-15 11,758,168 11,350,954 +407,214 4.49
    2026-04-30 11,350,954 10,071,976 +1,278,978 4.69
    2026-04-15 10,071,976 10,150,098 -78,122 4.05
    2026-03-31 10,150,098 11,998,736 -1,848,638 2.96
    2026-03-13 11,998,736 11,782,199 +216,537 3.39
    2026-02-27 11,782,199 12,025,661 -243,462 3.51
    2026-02-13 12,025,661 12,400,882 -375,221 2.89
    2026-01-30 12,400,882 14,666,987 -2,266,105 2.80
    2026-01-15 14,666,987 16,026,618 -1,359,631 2.89
    2025-12-31 16,026,618 15,103,757 +922,861 6.21
    2025-12-15 15,103,757 11,070,758 +4,032,999 3.96
    2025-11-28 11,070,758 12,475,930 -1,405,172 4.88
    2025-11-14 12,475,930 11,475,504 +1,000,426 4.97
    2025-10-31 11,475,504 11,290,624 +184,880 3.32
    2025-10-15 11,290,624 9,393,922 +1,896,702 3.10

    Full FINRA short interest reporting calendar

    Showing 1–24 of 24 settlements
    Key facts CIK 863064 CUSIP 767204100 13F (30d) 89 filings 87 filers Visit website Investor relations