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HowShorted

ACHV short interest Nasdaq Capital Market

Achieve Life Sciences, Inc. Co. 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
15,993,814
vs previous settlement
โˆ’453,831 (-2.8%)
days to cover
9.10
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for ACHV: 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
16,742
14 Sep 2026
Highest in window
921,651
29 Jun 2026
Days with a balance
162
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Achieve Life Sciences, Inc. Co 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 922K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202615,993,814โˆ’453,8319.10
31 Aug 202616,447,645+32,19512.19
14 Aug 202616,415,450+142,04212.76
31 Jul 202616,273,408+1,543,33915.04
15 Jul 202614,730,069+2,147,9187.77
30 Jun 202612,582,151+4,351,2433.32
15 Jun 20268,230,908+555,7646.05
29 May 20267,675,144+430,6435.45
15 May 20267,244,501+353,9525.63
30 Apr 20266,890,549+44,9432.66
15 Apr 20266,845,606โˆ’272,37610.34
31 Mar 20267,117,982+105,5516.79
13 Mar 20267,012,431+286,11018.44
27 Feb 20266,726,321โˆ’35,75023.37
13 Feb 20266,762,071โˆ’58,28213.64
30 Jan 20266,820,353โˆ’1,4716.67
15 Jan 20266,821,824+263,27610.70
31 Dec 20256,558,548+496,50711.02
15 Dec 20256,062,041โˆ’317,97810.44
28 Nov 20256,380,019+65,00010.25
14 Nov 20256,315,019+219,6578.89
31 Oct 20256,095,362+1,359,7601.72
15 Oct 20254,735,602+343,1827.36
30 Sep 20254,392,420+343,8555.79
15 Sep 20254,048,565โˆ’1,136,0922.92
29 Aug 20255,184,657+1,204,0302.90
15 Aug 20253,980,627+1,190,0686.36
31 Jul 20252,790,559+348,0613.62
15 Jul 20252,442,498+261,6911.39
30 Jun 20252,180,807โˆ’790,9981.20
13 Jun 20252,971,805+350,3707.83
30 May 20252,621,435โˆ’17,0478.32
15 May 20252,638,482+111,49318.37
30 Apr 20252,526,989+25,20511.73
15 Apr 20252,501,784โˆ’368,37511.21
31 Mar 20252,870,159โˆ’156,15619.41
14 Mar 20253,026,315โˆ’123,49117.63
28 Feb 20253,149,806โˆ’77,38819.41
14 Feb 20253,227,194+327,93512.65
31 Jan 20252,899,259โˆ’946,3969.40
15 Jan 20253,845,655+34,12110.63
31 Dec 20243,811,534+880,10721.07
13 Dec 20242,931,427+72,83324.42
29 Nov 20242,858,594โˆ’140,84028.58
15 Nov 20242,999,434โˆ’319,79220.68
31 Oct 20243,319,226+35,57843.87
15 Oct 20243,283,648+124,56827.43
30 Sep 20243,159,080โˆ’4,34429.50
13 Sep 20243,163,424+138,64738.55
30 Aug 20243,024,777+47,21633.80
15 Aug 20242,977,561+258,55823.39
31 Jul 20242,719,003+306,46915.18
15 Jul 20242,412,534+893,38614.44
28 Jun 20241,519,148+402,8781.96
14 Jun 20241,116,270+166,5947.14
31 May 2024949,676+199,1377.26
15 May 2024750,539+18,8114.97
30 Apr 2024731,728+18,44313.69
15 Apr 2024713,285โˆ’4,2099.63
28 Mar 2024717,494+15,7068.93
15 Mar 2024701,788+58,5893.06
29 Feb 2024643,199โˆ’24,0296.98
15 Feb 2024667,228โˆ’4,67721.21
31 Jan 2024671,905+10,0178.93
12 Jan 2024661,888โˆ’9,95022.48
29 Dec 2023671,838โˆ’35,3596.76
15 Dec 2023707,197+20,6483.05
30 Nov 2023686,549โˆ’15219.62
15 Nov 2023686,701โˆ’9,66817.33
31 Oct 2023696,369+3,02723.88
13 Oct 2023693,342โˆ’11,91215.91
29 Sep 2023705,254+4,59318.30
15 Sep 2023700,661โˆ’18,50113.37
31 Aug 2023719,162โˆ’9,18113.41
15 Aug 2023728,343โˆ’19,69118.56
31 Jul 2023748,034โˆ’59,51116.35
14 Jul 2023807,545+4,40311.07
30 Jun 2023803,142โˆ’4,9716.60
15 Jun 2023808,113+9,8046.59
31 May 2023798,309+165,0702.19
15 May 2023633,239+63,6154.09
28 Apr 2023569,624+20,1553.45
14 Apr 2023549,469+3,0464.26
31 Mar 2023546,423โˆ’15,7423.22
15 Mar 2023562,165โˆ’11,7576.87
28 Feb 2023573,922โˆ’58,1986.45
15 Feb 2023632,120+32,4226.10
31 Jan 2023599,698โˆ’366,6965.18
13 Jan 2023966,394+113,4706.55
30 Dec 2022852,924+91,11811.77
15 Dec 2022761,806+17,03723.60
30 Nov 2022744,769+410,7234.97
15 Nov 2022334,046+34,8183.63
31 Oct 2022299,228โˆ’9,6747.55
14 Oct 2022308,902โˆ’4,10611.00
30 Sep 2022313,008โˆ’16,2459.21
15 Sep 2022329,253+7413.53
31 Aug 2022329,179+11,8496.87
15 Aug 2022317,330+9,5573.14
29 Jul 2022307,773โˆ’9,45717.03
15 Jul 2022317,230โˆ’14,52210.70
30 Jun 2022331,752โˆ’21,7317.76
15 Jun 2022353,483โˆ’10,07216.05
31 May 2022363,555โˆ’16,29413.47
13 May 2022379,849โˆ’46,8886.39
29 Apr 2022426,737+114,5601.28
14 Apr 2022312,177โˆ’9,8925.30
31 Mar 2022322,069โˆ’16,84911.49
15 Mar 2022338,918โˆ’24,4587.31
28 Feb 2022363,376โˆ’26,31314.59
15 Feb 2022389,689โˆ’23,68916.68
31 Jan 2022413,378โˆ’10,4477.22
14 Jan 2022423,825+22,8498.62
31 Dec 2021400,976โˆ’11,0875.53
15 Dec 2021412,063+8,6216.72
30 Nov 2021403,442โˆ’37,8367.64
15 Nov 2021441,278+10,8717.57
29 Oct 2021430,407โˆ’28,8928.55
15 Oct 2021459,299โˆ’42,6507.74
30 Sep 2021501,949+5,5673.24
15 Sep 2021496,382โˆ’15,7796.52
31 Aug 2021512,161โˆ’28,9494.08
13 Aug 2021541,110+12,4832.35
30 Jul 2021528,627+37,0553.13
15 Jul 2021491,572+101,7622.81
30 Jun 2021389,810+70,4101.00
15 Jun 2021319,400โˆ’10,7822.17
28 May 2021330,182โˆ’97,9071.07
14 May 2021428,089โˆ’1210.11
30 Apr 2021428,101โˆ’40,5426.67
15 Apr 2021468,643+9,72210.12
31 Mar 2021458,921+22,4185.83
15 Mar 2021436,503+8,9413.15
26 Feb 2021427,562โˆ’32,2202.92
12 Feb 2021459,782โˆ’7282.34
29 Jan 2021460,510+19,6941.00
15 Jan 2021440,816โˆ’41,8012.72
31 Dec 2020482,617โˆ’14,8273.26
15 Dec 2020497,444โˆ’31,5401.26
30 Nov 2020528,984โˆ’10,7081.94
13 Nov 2020539,692โˆ’29,5833.10
30 Oct 2020569,275+23,28414.30
15 Oct 2020545,991โˆ’17,9194.67
30 Sep 2020563,910+36,7941.70
15 Sep 2020527,116+21,6102.88
31 Aug 2020505,506+103,6951.71
14 Aug 2020401,811+113,5891.00
31 Jul 2020288,222สณโˆ’2,818,4121.00
15 Jul 20203,106,634+922,4241.00
30 Jun 20202,184,210โˆ’13,2231.72
15 Jun 20202,197,433+1,197,2431.50
29 May 20201,000,190+127,8292.20
15 May 2020872,361+835,4471.00
30 Apr 202036,914โˆ’46,0521.00
15 Apr 202082,966+41,1511.00
31 Mar 202041,815+3,5321.00
13 Mar 202038,283โˆ’135,4551.00
28 Feb 2020173,738โˆ’8,0181.00
14 Feb 2020181,756โˆ’37,2201.00
31 Jan 2020218,976โˆ’138,9031.00
15 Jan 2020357,879โˆ’23,9141.00
31 Dec 2019381,793โˆ’1,638,4351.00
13 Dec 20192,020,228+1,258,1982.49
29 Nov 2019762,030+203,7024.00
15 Nov 2019558,328+346,2182.92
31 Oct 2019212,110+5543.47
15 Oct 2019211,556โˆ’25,8322.38
30 Sep 2019237,388โˆ’101,3081.84
13 Sep 2019338,696โˆ’39,0121.76
30 Aug 2019377,708โˆ’13,5394.11
15 Aug 2019391,247+29,9414.40
31 Jul 2019361,306โˆ’51,8563.47
15 Jul 2019413,162+14,4272.79
28 Jun 2019398,735โˆ’128,3941.95
14 Jun 2019527,129โˆ’15,4261.05
31 May 2019542,555โˆ’10,3193.38
15 May 2019552,874+128,1853.15
30 Apr 2019424,689โˆ’43,2691.44
15 Apr 2019467,958+2,4131.38
29 Mar 2019465,545โˆ’111,0031.30
15 Mar 2019576,548โˆ’524,5201.00
28 Feb 20191,101,068+808,3561.00
15 Feb 2019292,712โˆ’5,5863.62
31 Jan 2019298,298+14,4892.38
15 Jan 2019283,809โˆ’41,8351.09
31 Dec 2018325,644โˆ’11,7822.94
14 Dec 2018337,426โˆ’12,0853.56
30 Nov 2018349,511โˆ’17,6856.32
15 Nov 2018367,196โˆ’79,6523.55
31 Oct 2018446,848โˆ’112,1981.00
15 Oct 2018559,046+308,6301.01
28 Sep 2018250,416โˆ’48,1411.00
14 Sep 2018298,557+2,0794.52
31 Aug 2018296,478โˆ’56,7095.21
15 Aug 2018353,187+23,2824.03
31 Jul 2018329,905โˆ’43,9232.93
13 Jul 2018373,828+182,7091.00
29 Jun 2018191,119+113,2071.00
15 Jun 201877,912+32,4691.00
31 May 201845,443สณโˆ’470,0962.57
15 May 2018515,539โˆ’40,6007.28
30 Apr 2018556,139โˆ’72,97912.38
13 Apr 2018629,118โˆ’34,45714.28
29 Mar 2018663,575+33,02717.13
15 Mar 2018630,548โˆ’28,6114.35
28 Feb 2018659,159+120,4461.00
15 Feb 2018538,713+231,7944.34
31 Jan 2018306,919+117,6931.00
12 Jan 2018189,226+51,7691.81
29 Dec 2017137,457โ€“1.43

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

Questions

Frequently asked questions

What is ACHV's short interest?
15,993,814 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 453,831 from the previous settlement.
Why is there no percentage for ACHV?
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 ACHV's days to cover?
9.10 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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