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HowShorted

How shorted is Aehr Test Systems? AEHR

#269most shorted US stockof 3,805 ranked stocks, more shorted than 92%

15.69%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+2.35
5 reports (~10 weeks)
+2.45
days to cover
1.52
Aggregate net short position time series for Aehr Test Systems

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 Aehr Test Systems 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
14 Jul 202613.24% 30 Jun 202615.30% 15 Jul 2026+2.06
7 Apr 202613.35% 31 Mar 202617.65% 15 Apr 2026+4.30
8 Jan 202616.05% 31 Dec 202515.29% 15 Jan 2026−0.76
6 Oct 202516.88% 30 Sep 202515.74% 15 Oct 2025−1.14
8 Jul 202522.02% 30 Jun 202522.01% 15 Jul 2025−0.01
8 Apr 202521.95% 31 Mar 202524.50% 15 Apr 2025+2.55
13 Jan 202521.88% 31 Dec 202423.54% 15 Jan 2025+1.66
10 Oct 202418.18% 30 Sep 202418.34% 15 Oct 2024+0.16

Fails to deliver

The SEC's fails-to-deliver figure for AEHR: 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
14,065
11 Sep 2026
Highest in window
167,009
2 Jan 2026
Days with a balance
83
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Aehr Test Systems 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 167K shares.

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Sector: Technology · By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202615.69%+2.35
31 Aug 202613.34%+0.03
14 Aug 202613.31%+0.15
31 Jul 202613.16%−2.14
15 Jul 202615.30%+2.06
30 Jun 202613.24%+0.52
15 Jun 202612.72%−0.32
29 May 202613.04%−2.18
15 May 202615.22%+0.22
30 Apr 202615.00%−2.65
15 Apr 202617.65%+4.30
31 Mar 202613.35%−1.12
13 Mar 202614.47%−1.31
27 Feb 202615.78%−0.71
13 Feb 202616.49%+1.41
30 Jan 202615.08%−0.21
15 Jan 202615.29%−0.76
31 Dec 202516.05%−0.03
15 Dec 202516.08%−0.85
28 Nov 202516.93%+0.35
14 Nov 202516.58%+0.26
31 Oct 202516.32%+0.58
15 Oct 202515.74%−1.14
30 Sep 202516.88%−1.94
15 Sep 202518.82%−0.04
29 Aug 202518.86%−0.44
15 Aug 202519.30%−0.15
31 Jul 202519.45%−2.56
15 Jul 202522.01%−0.01
30 Jun 202522.02%−0.50
13 Jun 202522.52%−1.84
30 May 202524.36%+1.06
15 May 202523.30%−0.75
30 Apr 202524.05%−0.45
15 Apr 202524.50%+2.55
31 Mar 202521.95%−1.39
14 Mar 202523.34%−0.80
28 Feb 202524.14%−0.20
14 Feb 202524.34%+2.29
31 Jan 202522.05%−1.49
15 Jan 202523.54%+1.66
31 Dec 202421.88%+0.01
13 Dec 202421.87%+0.34
29 Nov 202421.53%−0.47
15 Nov 202422.00%+0.90
31 Oct 202421.10%+2.76
15 Oct 202418.34%+0.16
30 Sep 202418.18%+0.83
13 Sep 202417.35%−0.18
30 Aug 202417.53%+0.10
15 Aug 202417.43%+1.66
31 Jul 202415.77%−5.41
15 Jul 202421.18%+0.96
28 Jun 202420.22%+0.12
14 Jun 202420.10%−2.30
31 May 202422.40%+0.82
15 May 202421.58%+0.74
30 Apr 202420.84%+0.84
15 Apr 202420.00%+0.55
28 Mar 202419.45%−1.07
15 Mar 202420.52%−0.15
29 Feb 202420.67%−0.40
15 Feb 202421.07%+0.20
31 Jan 202420.87%−0.30
12 Jan 202421.17%−0.23
29 Dec 202321.40%+2.26
15 Dec 202319.14%−0.06
30 Nov 202319.20%−1.99
15 Nov 202321.19%−1.88
31 Oct 202323.07%+2.10
13 Oct 202320.97%+3.50
29 Sep 202317.47%+0.39
15 Sep 202317.08%−2.37
31 Aug 202319.45%+1.11
15 Aug 202318.34%+0.45
31 Jul 202317.89%−3.22
14 Jul 202321.11%+4.10
30 Jun 202317.01%−1.42
15 Jun 202318.43%+2.29
31 May 202316.14%−0.81
15 May 202316.95%+0.57
28 Apr 202316.38%−1.83
14 Apr 202318.21%+2.63
31 Mar 202315.58%−1.80
15 Mar 202317.38%+1.21
28 Feb 202316.17%+1.11
15 Feb 202315.06%−0.59
31 Jan 202315.65%+0.95
13 Jan 202314.70%−1.95
30 Dec 202216.65%−0.37
15 Dec 202217.02%−0.52
30 Nov 202217.54%+2.86
15 Nov 202214.68%−1.13
31 Oct 202215.81%+3.30
14 Oct 202212.51%+1.75
30 Sep 202210.76%+2.16
15 Sep 20228.60%+1.70
31 Aug 20226.90%−0.22
15 Aug 20227.12%+1.52
29 Jul 20225.60%+1.84
15 Jul 20223.76%−0.07
30 Jun 20223.83%−0.63
15 Jun 20224.46%−1.05
31 May 20225.51%−0.62
13 May 20226.13%−0.43
29 Apr 20226.56%−0.61
14 Apr 20227.17%−0.31
31 Mar 20227.48%−0.57
15 Mar 20228.05%−0.42
28 Feb 20228.47%−0.36
15 Feb 20228.83%+1.09
31 Jan 20227.74%−0.44
14 Jan 20228.18%−0.05
31 Dec 20218.23%+3.24
15 Dec 20214.99%+1.42
30 Nov 20213.57%−1.09
15 Nov 20214.66%−1.40
29 Oct 20216.06%−2.08
15 Oct 20218.14%+2.91
30 Sep 20215.23%−0.41
15 Sep 20215.64%−0.08
31 Aug 20215.72%+1.69
13 Aug 20214.03%+3.23
15 Jul 20210.80%+0.36
30 Jun 20210.44%−0.19
15 Jun 20210.63%−0.71
28 May 20211.34%−0.09
14 May 20211.43%+0.21
30 Apr 20211.22%+0.19
15 Apr 20211.03%+0.15
31 Mar 20210.88%+0.11
15 Mar 20210.77%−0.31
26 Feb 20211.08%+0.26
12 Feb 20210.82%+0.15
29 Jan 20210.67%+0.15
15 Jan 20210.52%+0.18
31 Dec 20200.34%+0.17
30 Nov 20200.17%−0.04
13 Nov 20200.21%−0.01
30 Oct 20200.22%−0.06
15 Oct 20200.28%−0.16
30 Sep 20200.44%−0.05
15 Sep 20200.49%+0.13
31 Aug 20200.36%−0.08
14 Aug 20200.44%−0.01
31 Jul 20200.45%−0.05
15 Jul 20200.50%−0.03
30 Jun 20200.53%−0.04
15 Jun 20200.57%−0.05
29 May 20200.62%0.00
15 May 20200.62%−0.02
30 Apr 20200.64%−0.09
15 Apr 20200.73%−0.11
31 Mar 20200.84%−0.02
13 Mar 20200.86%−0.06
28 Feb 20200.92%−0.03
14 Feb 20200.95%0.00
31 Jan 20200.95%+0.07
15 Jan 20200.88%−0.04
31 Dec 20190.92%+0.05
13 Dec 20190.87%+0.01
29 Nov 20190.86%−0.24
15 Nov 20191.10%+0.15
31 Oct 20190.95%−0.11
15 Oct 20191.06%−0.12
30 Sep 20191.18%+0.01
13 Sep 20191.17%−0.36
30 Aug 20191.53%0.00
15 Aug 20191.53%+0.03
31 Jul 20191.50%−0.01
15 Jul 20191.51%−0.01
28 Jun 20191.52%+0.27
14 Jun 20191.25%−0.06
31 May 20191.31%−0.11
15 May 20191.42%−0.05
30 Apr 20191.47%−0.08
15 Apr 20191.55%0.00
29 Mar 20191.55%−0.17
15 Mar 20191.72%−0.11
28 Feb 20191.83%+0.19
15 Feb 20191.64%+0.04
31 Jan 20191.60%−0.12
15 Jan 20191.72%−0.21
31 Dec 20181.93%−0.16
14 Dec 20182.09%−0.09
30 Nov 20182.18%−0.15
15 Nov 20182.33%−0.10
31 Oct 20182.43%+0.26
15 Oct 20182.17%+0.12
28 Sep 20182.05%−0.19
14 Sep 20182.24%−0.06
31 Aug 20182.30%+0.01
15 Aug 20182.29%−0.12
31 Jul 20182.41%−0.25
13 Jul 20182.66%+0.18
29 Jun 20182.48%−0.04
15 Jun 20182.52%+0.05
31 May 20182.47%−0.26
15 May 20182.73%+0.17
30 Apr 20182.56%−0.03
13 Apr 20182.59%+0.38
29 Mar 20182.21%+0.20
15 Mar 20182.01%−0.23
28 Feb 20182.24%−0.07
15 Feb 20182.31%−0.25
31 Jan 20182.56%+0.77
12 Jan 20181.79%+0.32
29 Dec 20171.47%–

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

Frequently asked questions

How shorted is Aehr Test Systems right now?
15.69% of Aehr Test Systems's (AEHR) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 269th 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 AEHR'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 AEHR's days to cover?
1.52 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.