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Aehr Test Systems short interest

5.6M shares of Aehr Test Systems were sold short at the 15 October 2026 settlement, the most since 15 Sep 2025. Short sellers would need 2.0 days of normal trading to buy them back.

Shares sold short5.6Mat 15 Oct 2026
Change on the settlement before+7.7%+19% over a year
Days to cover2.00at 2.8M shares a day
Of shares in issue17.31%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is the most since 15 Sep 2025, and the share price moved +119% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20265.6M+7.7%2.8M2.00
    30 September 20265.2M+2.0%2.2M2.42
    15 September 20265.1M+17.7%3.4M1.52
    31 August 20264.3M+0.2%2.2M2.02
    14 August 20264.3M+1.2%2.6M1.70
    31 July 20264.3M-10.8%3.1M1.39
    15 July 20264.8M+15.5%3.4M1.43
    30 June 20264.2M+4.1%1.4M2.90
    15 June 20264.0M-2.4%2.0M2.05
    29 May 20264.1M-14.3%2.3M1.77
    15 May 20264.8M+1.5%2.8M1.74
    30 April 20264.7M-15.0%3.9M1.21
    15 April 20265.6M+35.8%5.2M1.07
    31 March 20264.1M-7.8%1.5M2.70
    13 March 20264.4M-8.3%2.0M2.22
    27 February 20264.8M-4.3%1.4M3.56
    13 February 20265.1M+9.4%1.5M3.27
    30 January 20264.6M-1.4%1.2M3.82
    15 January 20264.7M-2.8%1.4M3.44
    31 December 20254.8M-0.2%504K9.56
    15 December 20254.8M-5.0%567K8.51
    28 November 20255.1M+2.1%712K7.13
    14 November 20255.0M+1.6%1.0M4.80
    31 October 20254.9M+3.7%1.5M3.26
    15 October 20254.7M-6.5%2.5M1.87
    30 September 20255.1M-10.3%1.7M3.02
    15 September 20255.6M-0.2%1.2M4.52
    29 August 20255.6M-2.3%2.8M1.98
    15 August 20255.8M-0.8%1.0M5.75
    31 July 20255.8M-11.6%1.8M3.19
    15 July 20256.6M+0.4%2.7M2.45
    30 June 20256.6M-2.2%1.0M6.44
    13 June 20256.7M-7.6%1.0M6.57
    30 May 20257.3M+4.6%577K12.57
    15 May 20256.9M-3.1%371K18.68
    30 April 20257.2M-1.9%401K17.87
    15 April 20257.3M+11.9%1.2M5.90
    31 March 20256.5M-6.0%658K9.91
    14 March 20256.9M-3.3%1.1M6.53
    28 February 20257.2M-0.8%938K7.65
    14 February 20257.2M+10.4%646K11.20
    31 January 20256.6M-6.3%1.1M5.71
    15 January 20257.0M+7.9%2.2M3.20
    31 December 20246.5M+0.1%1.9M3.36
    13 December 20246.5M+1.6%800K8.09
    29 November 20246.4M-2.1%616K10.36
    15 November 20246.5M+4.3%1.2M5.25
    31 October 20246.3M+15.1%1.3M4.89
    15 October 20245.4M+3.1%2.1M2.59
    30 September 20245.3M+4.8%773K6.82
    13 September 20245.0M-1.0%814K6.19
    30 August 20245.1M+0.6%715K7.11
    15 August 20245.1M+10.5%1.1M4.53
    31 July 20244.6M-25.5%3.0M1.50
    15 July 20246.1M+5.1%1.9M3.20
    28 June 20245.8M+0.6%1.0M5.68
    14 June 20245.8M-10.3%832K6.98
    31 May 20246.5M+3.8%578K11.20
    15 May 20246.2M+3.6%755K8.27
    30 April 20246.0M+4.2%833K7.24
    15 April 20245.8M+3.1%1.0M5.55
    28 March 20245.6M-5.2%2.1M2.68
    15 March 20245.9M-0.7%963K6.15
    29 February 20246.0M-1.9%1.2M4.97
    15 February 20246.1M+1.0%1.4M4.30
    31 January 20246.0M-1.4%1.9M3.24
    12 January 20246.1M-0.9%3.1M2.00
    29 December 20236.2M+11.8%782K7.88
    15 December 20235.5M-0.3%1.0M5.26
    30 November 20235.5M-9.4%784K7.05
    15 November 20236.1M-8.2%1.0M5.96
    31 October 20236.6M+10.0%1.6M4.11
    13 October 20236.0M+22.0%1.7M3.46
    29 September 20235.0M+2.3%637K7.77
    15 September 20234.8M-12.2%627K7.72
    31 August 20235.5M+6.0%907K6.08
    15 August 20235.2M+2.5%895K5.81
    31 July 20235.1M-15.2%1.4M3.71
    14 July 20236.0M+24.1%1.8M3.29
    30 June 20234.8M-7.7%1.2M3.93
    15 June 20235.2M+14.1%1.2M4.41
    31 May 20234.6M-4.8%851K5.37
    15 May 20234.8M+3.5%714K6.72
    28 April 20234.6M-10.1%1.0M4.43
    14 April 20235.2M+16.9%1.5M3.52
    31 March 20234.4M-8.5%1.9M2.35
    15 March 20234.8M+7.5%2.1M2.27
    28 February 20234.5M+7.4%813K5.52
    15 February 20234.2M-3.8%1.4M2.94
    31 January 20234.3M+6.5%1.6M2.79
    13 January 20234.1M-10.9%2.9M1.40
    30 December 20224.6M-2.1%946K4.84
    15 December 20224.7M-3.0%1.3M3.65
    30 November 20224.8M+19.5%1.1M4.35
    15 November 20224.0M-7.2%1.7M2.40
    31 October 20224.3M+26.4%2.5M1.76
    14 October 20223.4M+16.3%2.5M1.35
    30 September 20223.0M+25.8%913K3.24
    15 September 20222.4M+24.6%1.3M1.77
    31 August 20221.9M-3.1%1.5M1.22
    15 August 20221.9M+29.2%1.6M1.18
    29 July 20221.5M+49.0%1.3M1.14
    15 July 20221.0M-2.0%366K2.76
    30 June 20221.0M-14.0%223K4.63
    15 June 20221.2M-19.2%300K4.00
    31 May 20221.5M-10.1%347K4.28
    13 May 20221.7M-6.5%469K3.52
    29 April 20221.8M-8.5%521K3.39
    14 April 20221.9M-4.2%729K2.65
    31 March 20222.0M-6.8%662K3.04
    15 March 20222.2M-5.0%742K2.91
    28 February 20222.3M-4.1%617K3.69
    15 February 20222.4M+14.1%774K3.06
    31 January 20222.1M-5.3%1.2M1.75
    14 January 20222.2M-0.6%2.0M1.09
    31 December 20212.2M+66.7%1.6M1.36
    15 December 20211.3M+39.6%969K1.37
    30 November 2021949K-23.3%1.7M1.00
    15 November 20211.2M-23.1%2.1M1.00
    29 October 20211.6M-25.6%2.7M1.00
    15 October 20212.2M+55.6%5.2M1.00
    30 September 20211.4M+1.9%8.6M1.00
    15 September 20211.4M-1.3%5.4M1.00
    31 August 20211.4M+41.8%1.5M1.00
    13 August 2021975K-17.2%1.3M1.00
    30 July 20211.2M+524.3%28.6M1.00
    15 July 2021189K+82.6%599K1.00
    30 June 2021103K-30.3%186K1.00
    15 June 2021148K-53.2%453K1.00
    28 May 2021317K-5.8%771K1.00
    14 May 2021336K+17.1%345K1.00
    30 April 2021287K+18.5%93K3.09
    15 April 2021242K+16.5%269K1.00
    31 March 2021208K+14.4%128K1.62
    15 March 2021182K-28.1%310K1.00
    26 February 2021253K+30.8%1.2M1.00
    12 February 2021193K+22.7%527K1.00
    29 January 2021158K+29.4%367K1.00
    15 January 2021122K+51.2%363K1.00
    31 December 202081K-55.3%137K1.00
    15 December 2020180K+364.5%1.1M1.00
    30 November 202039K-20.2%117K1.00
    13 November 202049K-5.8%141K1.00
    30 October 202052K-22.2%89K1.00
    15 October 202066K-34.7%157K1.00
    30 September 2020102K-11.6%274K1.00
    15 September 2020115K+35.4%180K1.00
    31 August 202085K-18.0%45K1.89
    14 August 2020104K-1.9%65K1.60
    31 July 2020106K-9.0%204K1.00
    15 July 2020116K-5.0%40K2.87
    30 June 2020122K-6.4%60K2.05
    15 June 2020130K-8.0%84K1.56
    29 May 2020142K-0.4%37K3.85
    15 May 2020142K-2.8%37K3.87
    30 April 2020147K-13.3%30K4.87
    15 April 2020169K-12.5%76K2.21
    31 March 2020193K-2.3%56K3.45
    13 March 2020198K-6.2%77K2.57
    28 February 2020211K-3.1%143K1.48
    14 February 2020218K+0.3%101K2.17
    31 January 2020217K+7.9%82K2.64
    15 January 2020201K-4.2%186K1.08
    31 December 2019210K+6.0%48K4.38
    13 December 2019198K+0.7%110K1.80
    29 November 2019197K-21.7%88K2.24
    15 November 2019251K+16.1%128K1.97
    31 October 2019216K-10.3%46K4.66
    15 October 2019241K-10.4%113K2.13
    30 September 2019269K+1.2%121K2.22
    13 September 2019266K-23.5%37K7.25
    30 August 2019347K-0.5%15K23.46
    15 August 2019349K+2.5%37K9.38
    31 July 2019340K-0.1%96K3.56
    15 July 2019341K-0.5%20K16.76
    28 June 2019342K+21.7%16K21.39
    14 June 2019281K-5.1%35K8.08
    31 May 2019296K-7.5%36K8.33
    15 May 2019320K-3.6%66K4.86
    30 April 2019333K-5.1%41K8.18
    15 April 2019350K+0.8%358K1.00
    29 March 2019348K-9.6%23K14.98
    15 March 2019384K-6.0%21K18.37
    28 February 2019409K+11.4%35K11.62
    15 February 2019367K+2.4%53K6.95
    31 January 2019359K-6.7%243K1.47
    15 January 2019384K-11.1%222K1.73
    31 December 2018432K-7.1%75K5.79
    14 December 2018465K-4.3%36K12.76
    30 November 2018486K-6.0%43K11.36
    15 November 2018517K-4.3%44K11.87
    31 October 2018540K+11.8%43K12.45
    15 October 2018483K+6.2%108K4.46
    28 September 2018455K-8.4%64K7.14
    14 September 2018497K-2.8%25K19.50
    31 August 2018511K+0.4%43K11.87
    15 August 2018509K-4.7%56K9.03
    31 July 2018535K-8.5%145K3.68
    13 July 2018585K+7.5%74K7.87
    29 June 2018544K-1.9%133K4.09
    15 June 2018554K+2.4%113K4.89
    31 May 2018541K-9.7%70K7.69
    15 May 2018599K+6.7%81K7.38
    30 April 2018561K-1.2%77K7.32
    13 April 2018568K+17.8%173K3.28
    29 March 2018482K+10.3%97K4.96
    15 March 2018437K-10.3%137K3.20
    28 February 2018487K-3.2%95K5.11
    15 February 2018503K-10.0%127K3.96
    31 January 2018559K+43.1%114K4.91
    12 January 2018391K+22.1%294K1.33
    29 December 2017320K146K2.19
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.