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HowShorted

How shorted is Atomera Inc? ATOM

#230most shorted US stockof 3,805 ranked stocks, more shorted than 93%

16.62%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.07
5 reports (~10 weeks)
+1.49
days to cover
14.33
Aggregate net short position time series for Atomera 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 Atomera 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
4 Aug 202615.46% 31 Jul 202617.24% 14 Aug 2026+1.78
5 May 202612.55% 30 Apr 202614.97% 15 May 2026+2.42
12 Feb 202614.55% 30 Jan 202613.92% 13 Feb 2026−0.63
28 Oct 202513.89% 15 Oct 202512.68% 31 Oct 2025−1.21
5 Aug 202515.40% 31 Jul 202514.89% 15 Aug 2025−0.51
6 May 202514.96% 30 Apr 202514.54% 15 May 2025−0.42
11 Feb 202516.21% 31 Jan 202517.14% 14 Feb 2025+0.93
29 Oct 202410.37% 15 Oct 202411.08% 31 Oct 2024+0.71

Fails to deliver

The SEC's fails-to-deliver figure for ATOM: 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
17,433
8 Sep 2026
Highest in window
144,689
18 Feb 2026
Days with a balance
130
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Atomera 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 145K shares.

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Sector: Technology · By year: 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202616.62%−0.07
31 Aug 202616.69%−0.55
14 Aug 202617.24%+1.78
31 Jul 202615.46%−0.49
15 Jul 202615.95%+0.82
30 Jun 202615.13%+0.70
15 Jun 202614.43%+0.32
29 May 202614.11%−0.86
15 May 202614.97%+2.42
30 Apr 202612.55%−3.09
15 Apr 202615.64%−1.17
31 Mar 202616.81%+1.16
13 Mar 202615.65%+0.04
27 Feb 202615.61%+1.69
13 Feb 202613.92%−0.63
30 Jan 202614.55%+2.52
15 Jan 202612.03%−1.69
31 Dec 202513.72%−0.47
15 Dec 202514.19%+0.21
28 Nov 202513.98%+0.98
14 Nov 202513.00%+0.32
31 Oct 202512.68%−1.21
15 Oct 202513.89%+0.01
30 Sep 202513.88%+0.52
15 Sep 202513.36%−0.24
29 Aug 202513.60%−1.29
15 Aug 202514.89%−0.51
31 Jul 202515.40%−0.72
15 Jul 202516.12%−1.33
30 Jun 202517.45%+3.12
13 Jun 202514.33%−0.56
30 May 202514.89%+0.35
15 May 202514.54%−0.42
30 Apr 202514.96%−0.35
15 Apr 202515.31%−0.65
31 Mar 202515.96%−0.18
14 Mar 202516.14%+0.05
28 Feb 202516.09%−1.05
14 Feb 202517.14%+0.93
31 Jan 202516.21%+1.22
15 Jan 202514.99%−1.25
31 Dec 202416.24%−0.19
13 Dec 202416.43%+1.29
29 Nov 202415.14%+1.66
15 Nov 202413.48%+2.40
31 Oct 202411.08%+0.71
15 Oct 202410.37%+1.11
30 Sep 20249.26%+0.47
13 Sep 20248.79%−0.02
30 Aug 20248.81%+0.29
15 Aug 20248.52%+0.07
31 Jul 20248.45%−1.39
15 Jul 20249.84%−6.13
28 Jun 202415.97%−0.76
14 Jun 202416.73%−0.52
31 May 202417.25%+0.09
15 May 202417.16%−0.12
30 Apr 202417.28%−1.36
15 Apr 202418.64%−0.38
28 Mar 202419.02%+0.12
15 Mar 202418.90%+0.38
29 Feb 202418.52%−0.07
15 Feb 202418.59%−0.45
31 Jan 202419.04%+0.61
12 Jan 202418.43%+0.86
29 Dec 202317.57%−0.13
15 Dec 202317.70%−0.35
30 Nov 202318.05%+0.23
15 Nov 202317.82%−0.66
31 Oct 202318.48%+0.57
13 Oct 202317.91%−0.65
29 Sep 202318.56%+0.52
15 Sep 202318.04%+0.24
31 Aug 202317.80%−0.80
15 Aug 202318.60%−1.19
31 Jul 202319.79%−2.04
14 Jul 202321.83%−0.65
30 Jun 202322.48%−0.34
15 Jun 202322.82%+0.17
31 May 202322.65%+1.00
15 May 202321.65%+1.88
28 Apr 202319.77%+1.08
14 Apr 202318.69%+0.39
31 Mar 202318.30%+0.60
15 Mar 202317.70%−0.04
28 Feb 202317.74%+0.38
15 Feb 202317.36%+0.11
31 Jan 202317.25%+0.27
13 Jan 202316.98%+0.11
30 Dec 202216.87%+0.14
15 Dec 202216.73%−0.29
30 Nov 202217.02%−0.58
15 Nov 202217.60%+0.09
31 Oct 202217.51%+1.00
14 Oct 202216.51%+0.28
30 Sep 202216.23%+0.10
15 Sep 202216.13%−0.46
31 Aug 202216.59%−0.30
15 Aug 202216.89%+0.10
29 Jul 202216.79%−1.58
15 Jul 202218.37%+0.16
30 Jun 202218.21%−0.29
15 Jun 202218.50%+0.03
31 May 202218.47%−0.47
13 May 202218.94%+0.98
29 Apr 202217.96%+0.65
14 Apr 202217.31%+0.18
31 Mar 202217.13%−0.43
15 Mar 202217.56%−0.05
28 Feb 202217.61%+0.46
15 Feb 202217.15%+1.20
31 Jan 202215.95%+0.76
14 Jan 202215.19%+0.06
31 Dec 202115.13%−1.16
15 Dec 202116.29%−0.53
30 Nov 202116.82%+0.26
15 Nov 202116.56%+0.54
29 Oct 202116.02%−0.38
15 Oct 202116.40%+0.17
30 Sep 202116.23%+0.90
15 Sep 202115.33%+0.33
31 Aug 202115.00%−0.62
13 Aug 202115.62%+1.52
30 Jul 202114.10%−1.37
15 Jul 202115.47%−0.71
30 Jun 202116.18%+0.36
15 Jun 202115.82%+0.75
28 May 202115.07%+1.45
14 May 202113.62%−1.06
30 Apr 202114.68%+0.56
15 Apr 202114.12%+1.07
31 Mar 202113.05%+0.50
15 Mar 202112.55%+2.75
26 Feb 20219.80%+0.51
12 Feb 20219.29%−1.25
29 Jan 202110.54%−0.58
15 Jan 202111.12%+0.24
31 Dec 202010.88%−0.21
15 Dec 202011.09%−0.51
30 Nov 202011.60%−1.04
13 Nov 202012.64%−0.51
30 Oct 202013.15%+0.47
15 Oct 202012.68%−2.04
30 Sep 202014.72%−1.00
15 Sep 202015.72%+3.51
31 Aug 202012.21%+3.66
14 Aug 20208.55%+2.65
31 Jul 20205.90%−1.16
15 Jul 20207.06%+0.64
30 Jun 20206.42%+3.14
15 Jun 20203.28%+0.92
29 May 20202.36%−0.22
15 May 20202.58%+0.64
30 Apr 20201.94%−0.35
15 Apr 20202.29%−0.09
31 Mar 20202.38%+0.21
13 Mar 20202.17%+0.21
28 Feb 20201.96%−0.17
14 Feb 20202.13%+0.32
31 Jan 20201.81%+0.02
15 Jan 20201.79%+0.09
31 Dec 20191.70%+0.04
13 Dec 20191.66%−0.26
29 Nov 20191.92%+0.06
15 Nov 20191.86%−0.01
31 Oct 20191.87%−0.08
15 Oct 20191.95%–

Newest first. Scroll inside the table for earlier dates, back to 15 Oct 2019.

Frequently asked questions

How shorted is Atomera Inc right now?
16.62% of Atomera Inc's (ATOM) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 230th 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 ATOM'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 ATOM's days to cover?
14.33 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.