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HowShorted

How shorted is ATI Inc.? ATI

#2,397most shorted US stockof 3,805 ranked stocks, more shorted than 37%

3.18%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.46
5 reports (~10 weeks)
+0.35
days to cover
2.79
Aggregate net short position time series for ATI Inc.

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for ATI Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
6 Aug 20262.70% 31 Jul 20262.53% 14 Aug 2026−0.17
30 Apr 20262.75% 15 Apr 20262.76% 15 May 2026+0.01
3 Feb 20262.08% 30 Jan 20262.10% 13 Feb 2026+0.02
28 Oct 20252.54% 15 Oct 20252.06% 31 Oct 2025−0.48
31 Jul 20253.09% 15 Jul 20252.75% 15 Aug 2025−0.34
1 May 20251.72% 30 Apr 20252.52% 15 May 2025+0.80
4 Feb 20252.16% 31 Jan 20252.39% 14 Feb 2025+0.23
29 Oct 20241.35% 15 Oct 20241.72% 31 Oct 2024+0.37

Fails to deliver

The SEC's fails-to-deliver figure for ATI: 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
4
2 Sep 2026
Highest in window
6,070,401
29 Jun 2026
Days with a balance
39
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ATI Inc. 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 6.1M shares.

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Sector: Materials

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20263.18%+0.46
31 Aug 20262.72%+0.19
14 Aug 20262.53%−0.17
31 Jul 20262.70%−0.04
15 Jul 20262.74%−0.09
30 Jun 20262.83%+0.20
15 Jun 20262.63%−0.21
29 May 20262.84%+0.08
15 May 20262.76%−0.03
30 Apr 20262.79%+0.04
15 Apr 20262.75%+0.01
31 Mar 20262.74%+0.35
13 Mar 20262.39%+0.46
27 Feb 20261.93%−0.17
13 Feb 20262.10%+0.02
30 Jan 20262.08%+0.39
15 Jan 20261.69%+0.05
31 Dec 20251.64%−0.66
15 Dec 20252.30%+0.06
28 Nov 20252.24%+0.20
14 Nov 20252.04%−0.02
31 Oct 20252.06%−0.48
15 Oct 20252.54%−0.10
30 Sep 20252.64%−0.61
15 Sep 20253.25%+0.31
29 Aug 20252.94%+0.19
15 Aug 20252.75%+0.36
31 Jul 20252.39%−0.70
15 Jul 20253.09%−0.16
30 Jun 20253.25%+0.21
13 Jun 20253.04%+0.39
30 May 20252.65%+0.13
15 May 20252.52%+0.80
30 Apr 20251.72%−0.72
15 Apr 20252.44%+0.38
31 Mar 20252.06%−0.70
14 Mar 20252.76%+0.04
28 Feb 20252.72%+0.33
14 Feb 20252.39%+0.23
31 Jan 20252.16%−0.51
15 Jan 20252.67%+0.31
31 Dec 20242.36%+0.30
13 Dec 20242.06%+0.26
29 Nov 20241.80%−0.02
15 Nov 20241.82%+0.10
31 Oct 20241.72%+0.37
15 Oct 20241.35%−0.16
30 Sep 20241.51%−0.34
13 Sep 20241.85%−2.22
30 Aug 20244.07%−0.01
15 Aug 20244.08%−0.10
31 Jul 20244.18%+0.13
15 Jul 20244.05%−1.45
28 Jun 20245.50%−0.44
14 Jun 20245.94%+0.43
31 May 20245.51%+0.18
15 May 20245.33%+0.13
30 Apr 20245.20%+0.07
15 Apr 20245.13%+0.14
28 Mar 20244.99%−0.25
15 Mar 20245.24%+0.03
29 Feb 20245.21%+0.22
15 Feb 20244.99%+0.89
31 Jan 20244.10%−0.27
12 Jan 20244.37%−0.02
29 Dec 20234.39%−0.59
15 Dec 20234.98%−0.82
30 Nov 20235.80%−0.38
15 Nov 20236.18%+0.41
31 Oct 20235.77%+0.15
13 Oct 20235.62%−0.05
29 Sep 20235.67%−0.22
15 Sep 20235.89%+0.16
31 Aug 20235.73%−0.35
15 Aug 20236.08%−0.04
31 Jul 20236.12%−0.64
14 Jul 20236.76%+0.05
30 Jun 20236.71%−0.59
15 Jun 20237.30%+0.21
31 May 20237.09%−0.86
15 May 20237.95%+0.27
28 Apr 20237.68%+0.03
14 Apr 20237.65%−0.17
31 Mar 20237.82%0.00
15 Mar 20237.82%+0.08
28 Feb 20237.74%+0.04
15 Feb 20237.70%−2.28
31 Jan 20239.98%+0.35
13 Jan 20239.63%+0.32
30 Dec 20229.31%+0.07
15 Dec 20229.24%−0.59
30 Nov 20229.83%−0.80
15 Nov 202210.63%−0.55
31 Oct 202211.18%−0.27
14 Oct 202211.45%+0.31
30 Sep 202211.14%+0.26
15 Sep 202210.88%−0.08
31 Aug 202210.96%+0.57
15 Aug 202210.39%+0.09
29 Jul 202210.30%+0.07
15 Jul 202210.23%−0.38
30 Jun 202210.61%−3.44
15 Jun 202214.05%+0.03
31 May 202214.02%−0.13
13 May 202214.15%+0.21
29 Apr 202213.94%+0.81
14 Apr 202213.13%−0.55
31 Mar 202213.68%−0.12
15 Mar 202213.80%−0.11
28 Feb 202213.91%−0.74
15 Feb 202214.65%+1.11
31 Jan 202213.54%+1.78
14 Jan 202211.76%+1.65
31 Dec 202110.11%−0.65
15 Dec 202110.76%+0.76
30 Nov 202110.00%−0.44
15 Nov 202110.44%−0.38
29 Oct 202110.82%−0.09
15 Oct 202110.91%−0.45
30 Sep 202111.36%+0.10
15 Sep 202111.26%−0.25
31 Aug 202111.51%−0.04
13 Aug 202111.55%+0.18
30 Jul 202111.37%−0.67
15 Jul 202112.04%−0.06
30 Jun 202112.10%+0.62
15 Jun 202111.48%+0.21
28 May 202111.27%−0.35
14 May 202111.62%−0.02
30 Apr 202111.64%+0.20
15 Apr 202111.44%+1.17
31 Mar 202110.27%−0.53
15 Mar 202110.80%+0.73
26 Feb 202110.07%+0.26
12 Feb 20219.81%−0.28
29 Jan 202110.09%+0.84
15 Jan 20219.25%+0.08
31 Dec 20209.17%+0.07
15 Dec 20209.10%+0.04
30 Nov 20209.06%−0.62
13 Nov 20209.68%+0.13
30 Oct 20209.55%+0.12
15 Oct 20209.43%−0.49
30 Sep 20209.92%+0.79
15 Sep 20209.13%+0.46
31 Aug 20208.67%+0.56
14 Aug 20208.11%−0.10
31 Jul 20208.21%+0.07
15 Jul 20208.14%+0.64
30 Jun 20207.50%+0.26
15 Jun 20207.24%−0.38
29 May 20207.62%+0.46
15 May 20207.16%−0.27
30 Apr 20207.43%−1.77
15 Apr 20209.20%+0.12
31 Mar 20209.08%−2.07
13 Mar 202011.15%−2.13
28 Feb 202013.28%+0.46
14 Feb 202012.82%+0.55
31 Jan 202012.27%−0.18
15 Jan 202012.45%−0.14
31 Dec 201912.59%−0.10
13 Dec 201912.69%−0.14
29 Nov 201912.83%−0.22
15 Nov 201913.05%+0.63
31 Oct 201912.42%−1.04
15 Oct 201913.46%+0.84
30 Sep 201912.62%−0.43
13 Sep 201913.05%−0.11
30 Aug 201913.16%+0.84
15 Aug 201912.32%−1.40
31 Jul 201913.72%−1.08
15 Jul 201914.80%−0.27
28 Jun 201915.07%−0.05
14 Jun 201915.12%+0.63
31 May 201914.49%+0.91
15 May 201913.58%−0.24
30 Apr 201913.82%−0.20
15 Apr 201914.02%+0.61
29 Mar 201913.41%−0.57
15 Mar 201913.98%−0.85
28 Feb 201914.83%+2.48
15 Feb 201912.35%−0.60
31 Jan 201912.95%+0.03
15 Jan 201912.92%+0.85
31 Dec 201812.07%−0.47
14 Dec 201812.54%−0.07
30 Nov 201812.61%+0.34
15 Nov 201812.27%−0.12
31 Oct 201812.39%+0.53
15 Oct 201811.86%−0.36
28 Sep 201812.22%+0.04
14 Sep 201812.18%−0.11
31 Aug 201812.29%+0.27
15 Aug 201812.02%−0.28
31 Jul 201812.30%−0.16
13 Jul 201812.46%−0.09
29 Jun 201812.55%−0.55
15 Jun 201813.10%−1.64
31 May 201814.74%−0.54
15 May 201815.28%−0.17
30 Apr 201815.45%+0.33
13 Apr 201815.12%+1.06
29 Mar 201814.06%+0.16
15 Mar 201813.90%+0.15
28 Feb 201813.75%−0.14
15 Feb 201813.89%−2.17
31 Jan 201816.06%−0.99
12 Jan 201817.05%−0.31
29 Dec 201717.36%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is ATI Inc. right now?
3.18% of ATI Inc.'s (ATI) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,397th most shorted US stock, out of 3,805 we rank.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this ATI's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is ATI's days to cover?
2.79 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.