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HowShorted

ATS short interest NYSE

ATS Corporation. 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
2,150,708
vs previous settlement
+185,167 (+9.4%)
days to cover
5.89
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for ATS: 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
124
14 Sep 2026
Highest in window
69,057
10 Feb 2026
Days with a balance
120
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ATS Corporation 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 69K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20262,150,708+185,1675.89
31 Aug 20261,965,541โˆ’67,7048.33
14 Aug 20262,033,245+28,7225.59
31 Jul 20262,004,523+103,18415.19
15 Jul 20261,901,339+6,52412.20
30 Jun 20261,894,815โˆ’237,94011.57
15 Jun 20262,132,755โˆ’121,9269.31
29 May 20262,254,681+223,46310.63
15 May 20262,031,218โˆ’106,20413.37
30 Apr 20262,137,422โˆ’108,93513.98
15 Apr 20262,246,357โˆ’363,51921.24
31 Mar 20262,609,876โˆ’181,45713.70
13 Mar 20262,791,333+345,71713.96
27 Feb 20262,445,616โˆ’49,24715.91
13 Feb 20262,494,863โˆ’328,14311.31
30 Jan 20262,823,006โˆ’24,99915.80
15 Jan 20262,848,005+107,45228.13
31 Dec 20252,740,553+229,18330.36
15 Dec 20252,511,370โˆ’224,04532.82
28 Nov 20252,735,415สณ+68,38521.55
14 Nov 20252,667,030โˆ’229,69221.52
31 Oct 20252,896,722โˆ’200,58135.71
15 Oct 20253,097,303โˆ’36,35335.37
30 Sep 20253,133,656โˆ’99,11131.30
15 Sep 20253,232,767โˆ’183,48529.79
29 Aug 20253,416,252โˆ’169,11929.77
15 Aug 20253,585,371โˆ’84,11425.73
31 Jul 20253,669,485โˆ’188,72126.35
15 Jul 20253,858,206โˆ’283,18519.22
30 Jun 20254,141,391+132,82953.49
13 Jun 20254,008,562โˆ’13,72633.01
30 May 20254,022,288โˆ’106,52220.91
15 May 20254,128,810โˆ’238,97637.07
30 Apr 20254,367,786โˆ’119,57440.64
15 Apr 20254,487,360+256,61222.14
31 Mar 20254,230,748+126,78534.66
14 Mar 20254,103,963+238,82728.82
28 Feb 20253,865,136+131,83834.13
14 Feb 20253,733,298โˆ’60,67529.01
31 Jan 20253,793,973โˆ’248,04229.44
15 Jan 20254,042,015โˆ’47,25029.18
31 Dec 20244,089,265โˆ’36,74837.67
13 Dec 20244,126,013+328,28240.01
29 Nov 20243,797,731+345,95426.59
15 Nov 20243,451,777+326,31019.03
31 Oct 20243,125,467+274,09517.00
15 Oct 20242,851,372+279,88432.92
30 Sep 20242,571,488+113,01513.99
13 Sep 20242,458,473+153,40613.29
30 Aug 20242,305,067+44,11029.19
15 Aug 20242,260,957+11,05619.32
31 Jul 20242,249,901+74,54836.29
15 Jul 20242,175,353โˆ’13,00951.98
28 Jun 20242,188,362+420,62921.93
14 Jun 20241,767,733+445,11217.68
31 May 20241,322,621+354,9129.58
15 May 2024967,709+117,3776.59
30 Apr 2024850,332+379,6904.95
15 Apr 2024470,642โˆ’172,0683.28
28 Mar 2024642,710+98,1336.32
15 Mar 2024544,577โˆ’225,7967.47
29 Feb 2024770,373โˆ’127,10511.59
15 Feb 2024897,478+387,20310.11
31 Jan 2024510,275+94,67512.98
12 Jan 2024415,600+29,2808.77
29 Dec 2023386,320+28,1555.65
15 Dec 2023358,165+24,7896.18
30 Nov 2023333,376+135,7645.91
15 Nov 2023197,612โˆ’44,6621.74
31 Oct 2023242,274+81,3502.44
13 Oct 2023160,924โˆ’95,5493.75
29 Sep 2023256,473+56,2865.50
15 Sep 2023200,187+61,3735.53
31 Aug 2023138,814โˆ’4,4416.46
15 Aug 2023143,255+55,9654.88
31 Jul 202387,290โˆ’54,9083.38
14 Jul 2023142,198+20,6242.20
30 Jun 2023121,574โˆ’52,3824.22
15 Jun 2023173,956โˆ’88,4363.64
31 May 2023262,392โ€“1.08

Scroll inside the table for earlier settlements, back to 31 May 2023.

Questions

Frequently asked questions

What is ATS's short interest?
2,150,708 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 185,167 from the previous settlement.
Why is there no percentage for ATS?
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 ATS's days to cover?
5.89 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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