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HowShorted

ARKK short interest Cboe BZX

ARK Innovation ETF. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: exchange-traded product: its share count floats with creation and redemption.

Shares short
23,168,010
vs previous settlement
โˆ’1,318,020 (-5.4%)
days to cover
5.24
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for ARKK 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 ARKK days to cover

Fails to deliver

The SEC's fails-to-deliver figure for ARKK: 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.

Latest balance
78,627
14 Sep 2026
Highest in window
9,165,424
25 Sep 2025
Days with a balance
210
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ARK Innovation ETF 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 9.2M shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202623,168,010โˆ’1,318,0205.24
31 Aug 202624,486,030+25,4254.74
14 Aug 202624,460,605โˆ’485,2605.45
31 Jul 202624,945,865โˆ’1,190,4584.93
15 Jul 202626,136,323โˆ’1,055,1505.11
30 Jun 202627,191,473+2,321,3723.87
15 Jun 202624,870,101โˆ’1,629,1602.87
29 May 202626,499,261+763,4073.64
15 May 202625,735,854+362,4343.44
30 Apr 202625,373,420+1,918,9312.82
15 Apr 202623,454,489โˆ’1,676,3102.37
31 Mar 202625,130,799โˆ’1,406,9822.00
13 Mar 202626,537,781โˆ’246,2262.31
27 Feb 202626,784,007โˆ’2,985,2232.77
13 Feb 202629,769,230+3,113,4862.48
30 Jan 202626,655,744โˆ’920,2464.31
15 Jan 202627,575,990โˆ’49,7893.81
31 Dec 202527,625,779+6,217,0934.43
15 Dec 202521,408,686โˆ’346,8692.61
28 Nov 202521,755,555โˆ’6,878,9531.98
14 Nov 202528,634,508+7,969,9432.71
31 Oct 202520,664,565โˆ’795,8562.42
15 Oct 202521,460,421โˆ’11,972,8482.65
30 Sep 202533,433,269โˆ’6,357,1792.81
15 Sep 202539,790,448+283,3204.11
29 Aug 202539,507,128+4,144,4943.53
15 Aug 202535,362,634โˆ’2,494,7952.55
31 Jul 202537,857,429+1,342,7153.11
15 Jul 202536,514,714โˆ’147,9954.17
30 Jun 202536,662,709+1,543,5053.02
13 Jun 202535,119,204โˆ’742,0492.66
30 May 202535,861,253+995,0853.94
15 May 202534,866,168+4,063,6033.11
30 Apr 202530,802,565+2,512,5433.56
15 Apr 202528,290,022โˆ’2,288,9151.68
31 Mar 202530,578,937โˆ’426,4492.43
14 Mar 202531,005,386โˆ’2,038,6311.82
28 Feb 202533,044,017+2,003,7512.47
14 Feb 202531,040,266+161,8753.87
31 Jan 202530,878,391โˆ’2,508,1154.11
15 Jan 202533,386,506+5,146,2423.39
31 Dec 202428,240,264+2,849,2532.71
13 Dec 202425,391,011+1,655,7093.10
29 Nov 202423,735,302โˆ’3,884,0743.11
15 Nov 202427,619,376โˆ’197,5392.45
31 Oct 202427,816,915+231,0864.90
15 Oct 202427,585,829+224,6555.83
30 Sep 202427,361,174โˆ’1,274,7315.08
13 Sep 202428,635,905+2,341,6324.08
30 Aug 202426,294,273โˆ’896,0304.16
15 Aug 202427,190,303+1,510,1662.97
31 Jul 202425,680,137โˆ’251,7102.86
15 Jul 202425,931,847โˆ’1,830,0003.21
28 Jun 202427,761,847+142,9854.45
14 Jun 202427,618,862โˆ’1,834,9953.51
31 May 202429,453,857+3,066,1833.24
15 May 202426,387,674โˆ’2,491,6692.12
30 Apr 202428,879,343+2,037,6682.27
15 Apr 202426,841,675+1,442,2052.24
28 Mar 202425,399,470+244,8622.44
15 Mar 202425,154,608โˆ’241,5442.10
29 Feb 202425,396,152โˆ’1,462,3481.96
15 Feb 202426,858,500โˆ’465,7421.57
31 Jan 202427,324,242โˆ’3,633,8451.55
12 Jan 202430,958,087โˆ’3,870,0081.67
29 Dec 202334,828,095โˆ’7,371,1062.13
15 Dec 202342,199,201+4,496,9561.98
30 Nov 202337,702,245โˆ’2,968,2232.37
15 Nov 202340,670,468สณโˆ’3,188,9021.85
31 Oct 202343,859,370+3,266,9972.65
13 Oct 202340,592,373โˆ’408,1872.80
29 Sep 202341,000,560+348,5742.86
15 Sep 202340,651,986+2,645,3343.59
31 Aug 202338,006,652โˆ’5,344,6432.59
15 Aug 202343,351,295+7,903,1732.67
31 Jul 202335,448,122โˆ’2,372,6432.26
14 Jul 202337,820,765+2,187,2482.20
30 Jun 202335,633,517โˆ’1,753,6612.80
15 Jun 202337,387,178โˆ’2,929,3742.26
31 May 202340,316,552สณโˆ’2,087,3152.30
15 May 202342,403,867+705,3182.77
28 Apr 202341,698,549โˆ’486,4792.94
14 Apr 202342,185,028โˆ’1,398,4792.47
31 Mar 202343,583,507โˆ’5,430,5671.81
15 Mar 202349,014,074+940,6461.56
28 Feb 202348,073,428+15,062,4891.46
15 Feb 202333,010,939+2,862,4381.00
31 Jan 202330,148,501+1,915,2931.19
13 Jan 202328,233,208+1,507,1481.21
30 Dec 202226,726,060+3,146,2831.25
15 Dec 202223,579,777โˆ’590,8441.00
30 Nov 202224,170,621โˆ’5,927,3391.13
15 Nov 202230,097,960โˆ’410,2391.00
31 Oct 202230,508,199+1,525,4501.24
14 Oct 202228,982,749โˆ’4,403,4131.15
30 Sep 202233,386,162โˆ’1,990,5351.38
15 Sep 202235,376,697+3,087,9521.53
31 Aug 202232,288,745+4,218,5451.45
15 Aug 202228,070,200+8,565,5171.20
29 Jul 202219,504,683โˆ’1,098,2851.00
15 Jul 202220,602,968โˆ’3,222,8351.00
30 Jun 202223,825,803โˆ’5,253,4651.00
15 Jun 202229,079,268+483,8151.00
31 May 202228,595,453โˆ’4,895,8671.00
13 May 202233,491,320โˆ’2,653,9651.00
29 Apr 202236,145,285โˆ’4,024,4041.47
14 Apr 202240,169,689+6,921,3831.81
31 Mar 202233,248,306โˆ’1,092,6911.30
15 Mar 202234,340,997+1,581,2901.42
28 Feb 202232,759,707โˆ’2,981,2841.34
15 Feb 202235,740,991+8,906,0041.40
31 Jan 202226,834,987โˆ’1,268,1861.00
14 Jan 202228,103,173+3,508,2841.46
31 Dec 202124,594,889โˆ’2,984,2051.99
15 Dec 202127,579,094+4,784,2101.78
30 Nov 202122,794,884โˆ’1,850,6693.37
15 Nov 202124,645,553+1,607,3764.69
29 Oct 202123,038,177โˆ’4,995,2654.53
15 Oct 202128,033,442+1,379,5205.76
30 Sep 202126,653,922+4,879,4063.74
15 Sep 202121,774,516+839,9604.71
31 Aug 202120,934,556+522,1783.97
13 Aug 202120,412,378โˆ’1,163,2963.94
30 Jul 202121,575,674+2,304,6973.26
15 Jul 202119,270,977+657,8882.42
30 Jun 202118,613,089โˆ’1,203,3962.11
15 Jun 202119,816,485สณ+1,470,4462.60
28 May 202118,346,039โˆ’2,183,4461.68
14 May 202120,529,485+6,055,9431.29
30 Apr 202114,473,542+1,854,3892.18
15 Apr 202112,619,153โˆ’6,827,0111.65
31 Mar 202119,446,164+7,236,8541.47
15 Mar 202112,209,310โˆ’2,932,7001.00
26 Feb 202115,142,010+7,885,2081.05
12 Feb 20217,256,802+1,055,6701.00
29 Jan 20216,201,132+1,729,8471.00
15 Jan 20214,471,285+1,618,0501.00
31 Dec 20202,853,235+1,123,9171.00
15 Dec 20201,729,318โˆ’150,5031.00
30 Nov 20201,879,821+618,2181.00
13 Nov 20201,261,603+327,2791.00
30 Oct 2020934,324+2,1671.00
15 Oct 2020932,157+134,1881.00
30 Sep 2020797,969โˆ’1,015,7451.00
15 Sep 20201,813,714+1,173,5871.00
31 Aug 2020640,127โˆ’278,8621.00
14 Aug 2020918,989+544,3501.00
31 Jul 2020374,639โˆ’57,9211.00
15 Jul 2020432,560โˆ’39,5351.00
30 Jun 2020472,095+38,0271.00
15 Jun 2020434,068+80,7691.00
29 May 2020353,299+52,4971.00
15 May 2020300,802+65,4431.00
30 Apr 2020235,359โˆ’119,5451.00
15 Apr 2020354,904โˆ’215,5681.00
31 Mar 2020570,472+349,5481.00
13 Mar 2020220,924+117,1031.00
28 Feb 2020103,821+17,3591.00
14 Feb 202086,462โˆ’4,3211.00
31 Jan 202090,783โˆ’2,6311.00
15 Jan 202093,414+3,4561.00
31 Dec 201989,958โˆ’11,8551.00
13 Dec 2019101,813+22,0981.00
29 Nov 201979,715โˆ’9,2701.00
15 Nov 201988,985+29,7521.00
31 Oct 201959,233โˆ’2,2241.00
15 Oct 201961,457+7,5561.00
30 Sep 201953,901โˆ’125,0691.00
13 Sep 2019178,970+114,8241.00
30 Aug 201964,146โˆ’19,0221.00
15 Aug 201983,168+1,4701.00
31 Jul 201981,698+33,9941.00
15 Jul 201947,704+15,4721.00
28 Jun 201932,232โˆ’4,1491.00
14 Jun 201936,381+17,8471.00
31 May 201918,534โˆ’37,4111.00
15 May 201955,945โˆ’104,7301.00
30 Apr 2019160,675โˆ’7,9461.00
15 Apr 2019168,621โˆ’349,1761.00
29 Mar 2019517,797+243,1091.34
15 Mar 2019274,688+38,3451.00
28 Feb 2019236,343โˆ’89,2131.00
15 Feb 2019325,556+66,4901.10
31 Jan 2019259,066โˆ’70,7051.00
15 Jan 2019329,771+109,9561.00
31 Dec 2018219,815โˆ’20,2991.00
14 Dec 2018240,114โˆ’45,3881.00
30 Nov 2018285,502+89,8931.31
15 Nov 2018195,609โˆ’40,2291.00
31 Oct 2018235,838โˆ’37,7581.00
15 Oct 2018273,596+124,8881.00
28 Sep 2018148,708+21,3061.00
14 Sep 2018127,402+26,4961.00
31 Aug 2018100,906+20,2941.00
15 Aug 201880,612+30,2721.00
31 Jul 201850,340โˆ’64,0951.00
13 Jul 2018114,435+81,6261.00
29 Jun 201832,809โˆ’76,1311.00
15 Jun 2018108,940โˆ’21,9231.00
31 May 2018130,863+1,2801.00
15 May 2018129,583+104,1911.00
30 Apr 201825,392โˆ’79,7811.00
13 Apr 2018105,173+92,4671.00
29 Mar 201812,706โˆ’82,6411.00
15 Mar 201895,347โˆ’100,8951.00
28 Feb 2018196,242+53,4491.00
15 Feb 2018142,793+40,0741.00
31 Jan 2018102,719+26,5361.00
12 Jan 201876,183+39,2101.00
29 Dec 201736,973โ€“1.00

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

Questions

Frequently asked questions

What is ARKK's short interest?
23,168,010 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 1,318,020 from the previous settlement.
Why is there no percentage for ARKK?
Because no defensible share count exists to divide by: exchange-traded product: its share count floats with creation and redemption. An exchange-traded product's share count changes every day as units are created and redeemed, so no filing gives a stable count to divide by. FINRA's shares-short figure is exact; a percentage of it would not be.
What is ARKK's days to cover?
5.24 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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