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HowShorted

RIO short interest NYSE

Rio Tinto plc. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
9,810,781
vs previous settlement
โˆ’221,161 (-2.2%)
days to cover
5.65
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for RIO shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for RIO days to cover

Fails to deliver

The SEC's fails-to-deliver figure for RIO: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
8,753
31 Aug 2026
Highest in window
251,729
9 Apr 2026
Days with a balance
84
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Rio Tinto plc fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 252K shares.

History

Every FINRA settlement we hold for RIO, newest first. สณ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20269,810,781โˆ’221,1615.65
31 Aug 202610,031,942+1,042,6114.25
14 Aug 20268,989,331+1,100,7294.15
31 Jul 20267,888,602โˆ’1,374,7352.65
15 Jul 20269,263,337โˆ’1,087,1803.20
30 Jun 202610,350,517โˆ’1,407,3613.84
15 Jun 202611,757,878โˆ’582,4534.18
29 May 202612,340,331+582,1635.16
15 May 202611,758,168+407,2144.49
30 Apr 202611,350,954+1,278,9784.69
15 Apr 202610,071,976โˆ’78,1224.05
31 Mar 202610,150,098โˆ’1,848,6382.96
13 Mar 202611,998,736+216,5373.39
27 Feb 202611,782,199โˆ’243,4623.51
13 Feb 202612,025,661โˆ’375,2212.89
30 Jan 202612,400,882โˆ’2,266,1052.80
15 Jan 202614,666,987โˆ’1,359,6312.89
31 Dec 202516,026,618+922,8616.21
15 Dec 202515,103,757+4,032,9993.96
28 Nov 202511,070,758โˆ’1,405,1724.88
14 Nov 202512,475,930+1,000,4264.97
31 Oct 202511,475,504+184,8803.32
15 Oct 202511,290,624+1,896,7023.10
30 Sep 20259,393,922+3,056,3662.51
15 Sep 20256,337,556โˆ’1,921,1732.19
29 Aug 20258,258,729โˆ’209,2763.22
15 Aug 20258,468,005โˆ’878,8232.91
31 Jul 20259,346,828+1,275,0082.51
15 Jul 20258,071,820โˆ’959,1841.65
30 Jun 20259,031,004โˆ’704,0382.72
13 Jun 20259,735,042+1,490,5373.11
30 May 20258,244,505+374,4832.21
15 May 20257,870,022+1,638,1553.44
30 Apr 20256,231,867โˆ’98,1202.25
15 Apr 20256,329,987โˆ’1,154,3081.42
31 Mar 20257,484,295โˆ’1,100,1202.62
14 Mar 20258,584,415+299,2822.45
28 Feb 20258,285,133+722,4192.64
14 Feb 20257,562,714โˆ’980,5952.96
31 Jan 20258,543,309+289,2652.10
15 Jan 20258,254,044โˆ’930,5392.80
31 Dec 20249,184,583+111,7783.81
13 Dec 20249,072,805+1,626,2412.45
29 Nov 20247,446,564โˆ’1,546,6813.93
15 Nov 20248,993,245โˆ’253,1133.04
31 Oct 20249,246,358โˆ’288,6523.87
15 Oct 20249,535,010+165,7722.59
30 Sep 20249,369,238+632,8203.02
13 Sep 20248,736,418โˆ’176,4723.41
30 Aug 20248,912,890+1,120,8513.87
15 Aug 20247,792,039+1,082,3332.46
31 Jul 20246,709,706โˆ’456,8862.22
15 Jul 20247,166,592โˆ’697,3553.85
28 Jun 20247,863,947+196,7064.47
14 Jun 20247,667,241โˆ’9,7194.07
31 May 20247,676,960+16,9282.64
15 May 20247,660,032+794,9533.36
30 Apr 20246,865,079+1,387,2252.15
15 Apr 20245,477,854โˆ’176,6581.52
28 Mar 20245,654,512โˆ’597,8992.19
15 Mar 20246,252,411โˆ’475,8761.80
29 Feb 20246,728,287โˆ’356,0342.23
15 Feb 20247,084,321+1,083,3843.10
31 Jan 20246,000,937+373,8011.90
12 Jan 20245,627,136+52,1132.44
29 Dec 20235,575,023โˆ’623,2052.75
15 Dec 20236,198,228โˆ’329,0431.83
30 Nov 20236,527,271โˆ’435,3712.79
15 Nov 20236,962,642โˆ’1,075,0742.65
31 Oct 20238,037,716โˆ’1,020,9901.95
13 Oct 20239,058,706โˆ’1,644,4012.70
29 Sep 202310,703,107โˆ’1,084,3423.71
15 Sep 202311,787,449+424,7273.97
31 Aug 202311,362,722+2,229,9214.08
15 Aug 20239,132,801+1,503,3712.84
31 Jul 20237,629,430+174,1612.92
14 Jul 20237,455,269+53,0412.73
30 Jun 20237,402,228+406,5202.71
15 Jun 20236,995,708โˆ’283,2721.92
31 May 20237,278,980สณ+874,5442.01
15 May 20236,404,436โˆ’785,7202.20
28 Apr 20237,190,156โˆ’905,6641.97
14 Apr 20238,095,820+881,0332.97
31 Mar 20237,214,787โˆ’2,634,8001.69
15 Mar 20239,849,587โˆ’957,5712.56
28 Feb 202310,807,158+132,8643.40
15 Feb 202310,674,294โˆ’292,3103.73
31 Jan 202310,966,604โˆ’1,770,2023.77
13 Jan 202312,736,806+124,5975.20
30 Dec 202212,612,209โˆ’1,054,9096.07
15 Dec 202213,667,118+298,5983.85
30 Nov 202213,368,520โˆ’111,5844.30
15 Nov 202213,480,104+1,825,8512.89
31 Oct 202211,654,253โˆ’162,6082.27
14 Oct 202211,816,861+899,9552.59
30 Sep 202210,916,906โˆ’3,904,6102.31
15 Sep 202214,821,516+890,3044.29
31 Aug 202213,931,212+203,9684.45
15 Aug 202213,727,244โˆ’1,674,0643.90
29 Jul 202215,401,308โˆ’407,4894.67
15 Jul 202215,808,797+1,196,5223.50
30 Jun 202214,612,275+1,454,9403.97
15 Jun 202213,157,335+159,6104.42
31 May 202212,997,725+1,017,1874.27
13 May 202211,980,538+1,637,0312.97
29 Apr 202210,343,507+737,4512.53
14 Apr 20229,606,056โˆ’1,389,1153.23
31 Mar 202210,995,171โˆ’784,2132.91
15 Mar 202211,779,384โˆ’1,387,3851.63
28 Feb 202213,166,769โˆ’157,2612.76
15 Feb 202213,324,030โˆ’841,6042.99
31 Jan 202214,165,634โˆ’444,7122.62
14 Jan 202214,610,346+1,378,0343.03
31 Dec 202113,232,312โˆ’873,1254.96
15 Dec 202114,105,437+1,129,6223.85
30 Nov 202112,975,815โˆ’220,4073.63
15 Nov 202113,196,222+640,7733.60
29 Oct 202112,555,449+231,5813.46
15 Oct 202112,323,868+940,2253.80
30 Sep 202111,383,643โˆ’101,0282.20
15 Sep 202111,484,671โˆ’13,6713.60
31 Aug 202111,498,342โˆ’1,222,3804.46
13 Aug 202112,720,722+637,7465.02
30 Jul 202112,082,976+933,9094.85
15 Jul 202111,149,067+694,2036.58
30 Jun 202110,454,864+219,7095.19
15 Jun 202110,235,155สณ+661,2424.47
28 May 20219,573,913โˆ’636,1084.15
14 May 202110,210,021โˆ’367,4293.52
30 Apr 202110,577,450โˆ’46,9404.37
15 Apr 202110,624,390+1,426,5835.40
31 Mar 20219,197,807+998,3263.87
15 Mar 20218,199,481+162,0593.05
26 Feb 20218,037,422+464,2843.96
12 Feb 20217,573,138+1,787,7944.02
29 Jan 20215,785,344โˆ’1,519,4724.16
15 Jan 20217,304,816+306,3613.36
31 Dec 20206,998,455โˆ’614,5805.65
15 Dec 20207,613,035โˆ’781,0713.38
30 Nov 20208,394,106โˆ’985,4115.45
13 Nov 20209,379,517+39,6824.69
30 Oct 20209,339,835โˆ’2,851,2095.23
15 Oct 202012,191,044โˆ’422,9866.46
30 Sep 202012,614,030+492,5845.95
15 Sep 202012,121,446โˆ’54,3996.27
31 Aug 202012,175,845+628,2728.77
14 Aug 202011,547,573+1,994,2495.35
31 Jul 20209,553,324+538,6045.92
15 Jul 20209,014,720+1,573,8164.19
30 Jun 20207,440,904+75,1124.10
15 Jun 20207,365,792+919,0543.12
29 May 20206,446,738+195,1823.34
15 May 20206,251,556สณ+598,4043.13
30 Apr 20205,653,152+632,6022.87
15 Apr 20205,020,550+171,7481.88
31 Mar 20204,848,802โˆ’1,973,9611.47
13 Mar 20206,822,763+966,9531.40
28 Feb 20205,855,810+625,3272.08
14 Feb 20205,230,483โˆ’646,1534.13
31 Jan 20205,876,636โˆ’692,0883.67
15 Jan 20206,568,724สณ+692,3294.93
31 Dec 20195,876,395โˆ’483,3545.62
13 Dec 20196,359,749โˆ’1,682,0704.87
29 Nov 20198,041,819+888,1557.09
15 Nov 20197,153,664โˆ’1,125,5893.69
31 Oct 20198,279,253+463,6174.31
15 Oct 20197,815,636+930,0243.18
30 Sep 20196,885,612+612,0653.36
13 Sep 20196,273,547โˆ’891,4963.13
30 Aug 20197,165,043โˆ’622,1963.38
15 Aug 20197,787,239+1,093,6422.85
31 Jul 20196,693,597โˆ’993,3023.38
15 Jul 20197,686,899โˆ’2,442,2583.26
28 Jun 201910,129,157+387,2584.37
14 Jun 20199,741,899+1,908,0194.61
31 May 20197,833,880โˆ’1,146,6282.77
15 May 20198,980,508โˆ’2,102,6833.30
30 Apr 201911,083,191โˆ’2,264,1064.43
15 Apr 201913,347,297โˆ’307,8085.28
29 Mar 201913,655,105+1,901,2633.09
15 Mar 201911,753,842+748,9994.83
28 Feb 201911,004,843โˆ’352,8113.93
15 Feb 201911,357,654โˆ’854,7063.36
31 Jan 201912,212,360+1,007,5763.91
15 Jan 201911,204,784+1,945,0734.25
31 Dec 20189,259,711+647,6712.89
14 Dec 20188,612,040+2,139,5452.71
30 Nov 20186,472,495+423,7702.51
15 Nov 20186,048,725โˆ’26,9302.26
31 Oct 20186,075,655+51,7562.10
15 Oct 20186,023,899โˆ’406,8012.13
28 Sep 20186,430,700โˆ’485,7372.25
14 Sep 20186,916,437โˆ’418,1612.68
31 Aug 20187,334,598โˆ’823,6723.32
15 Aug 20188,158,270โˆ’535,4442.22
31 Jul 20188,693,714+109,7983.08
13 Jul 20188,583,916สณ+2,093,8882.29
29 Jun 20186,490,028+201,8201.74
15 Jun 20186,288,208+1,227,5892.74
31 May 20185,060,619โˆ’1,071,5122.33
15 May 20186,132,131โˆ’471,7592.73
30 Apr 20186,603,890โˆ’1,418,7502.28
13 Apr 20188,022,640โˆ’63,6332.67
29 Mar 20188,086,273โˆ’654,2762.63
15 Mar 20188,740,549โˆ’1,805,7162.31
28 Feb 201810,546,265+580,1133.23
15 Feb 20189,966,152โˆ’196,4972.20
31 Jan 201810,162,649โˆ’978,6704.31
12 Jan 201811,141,319โˆ’1,215,3713.90
29 Dec 201712,356,690โ€“5.42

Scroll inside the table for earlier settlements, back to 29 Dec 2017.

Questions

Frequently asked questions

What is RIO's short interest?
9,810,781 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 221,161 from the previous settlement.
Why is there no percentage for RIO?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is RIO's days to cover?
5.65 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

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