Aehr Test Systems (AEHR) seasonality heatmap
Returns across monthly, quarterly, and yearly periods. Cell color encodes signed magnitude; the scale auto-fits each table.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +27.0% | +46.0% | -0.9% | +144.2% | +2.0% | +17.5% | — | — | — | — | — | — |
| 2025 | -31.9% | -14.9% | -24.4% | +17.0% | +11.8% | +35.5% | +30.7% | +47.6% | +20.7% | -13.7% | -11.6% | -12.1% |
| 2024 | -44.0% | +9.6% | -23.8% | -3.4% | -3.9% | -3.0% | +68.9% | -19.4% | -15.5% | +9.6% | -15.6% | +39.9% |
| 2023 | +73.9% | -4.6% | -7.0% | -20.2% | +33.4% | +24.9% | +26.4% | -2.2% | -10.4% | -48.4% | -2.5% | +15.5% |
| 2022 | -47.3% | +6.7% | -25.3% | -24.4% | +9.1% | -10.5% | +52.1% | +27.4% | -3.0% | +45.9% | +26.7% | -22.9% |
| 2021 | -9.5% | +22.3% | -10.0% | -10.3% | -0.4% | +22.7% | +103.6% | +32.7% | +83.0% | +65.7% | -23.0% | +38.8% |
| 2020 | +2.5% | +2.4% | -20.5% | +4.2% | -5.2% | +18.8% | +4.6% | -13.2% | -21.9% | -12.2% | +35.2% | +53.3% |
| 2019 | -11.3% | +16.8% | -5.5% | +15.9% | +9.4% | -5.7% | -20.6% | +2.3% | +33.6% | -6.7% | +13.2% | +5.8% |
| 2018 | -4.1% | -11.9% | -1.7% | +3.1% | +12.1% | -9.6% | -1.7% | +9.5% | -12.3% | -13.5% | -2.1% | -25.0% |
| 2017 | -2.1% | +122.0% | -8.2% | -5.0% | +0.2% | -18.1% | +7.7% | -16.8% | +21.7% | -11.7% | -29.4% | +6.3% |
| 2016 | -21.3% | -19.6% | -3.4% | +22.6% | -28.4% | +59.4% | +8.1% | +39.1% | +32.6% | +7.5% | -13.3% | -19.4% |
| 2015 | +4.3% | -0.8% | -11.4% | +8.1% | -5.1% | -5.0% | -1.8% | +3.1% | +10.4% | -19.2% | -3.9% | -5.1% |
| 2014 | -18.8% | -6.4% | +21.3% | -10.2% | -11.7% | -4.9% | +28.4% | -8.0% | -0.4% | +4.7% | +0.8% | -4.5% |
| 2013 | +5.0% | +0.9% | +24.4% | -13.4% | +48.5% | -4.9% | +12.4% | +1.3% | +52.6% | +7.1% | +11.0% | +9.2% |
| 2012 | +44.2% | +6.7% | +21.3% | +47.4% | -11.2% | -3.9% | -4.1% | -6.0% | -0.9% | -13.8% | -4.3% | -5.5% |
| 2011 | +9.2% | +36.6% | +17.3% | -30.5% | +1.4% | -9.5% | +8.2% | -22.8% | -18.8% | -1.1% | -23.3% | -24.6% |
| 2010 | +37.9% | +40.1% | +5.1% | +9.3% | -20.1% | -18.8% | -20.0% | -21.1% | +32.5% | -24.5% | -22.5% | +29.0% |
| 2009 | -28.8% | -26.7% | +14.0% | -15.6% | -9.7% | -8.6% | +10.0% | -9.1% | +54.1% | +0.8% | +13.6% | -12.0% |
| 2008 | +9.8% | +9.0% | +15.8% | +0.6% | +2.4% | -11.1% | -38.0% | -8.8% | -15.1% | -26.1% | -20.1% | -6.4% |
| 2007 | +17.4% | +0.7% | +5.4% | -8.7% | +6.3% | -0.2% | +25.7% | -9.1% | +7.1% | -2.6% | -16.3% | +1.2% |
| 2006 | -8.6% | +0.3% | +34.7% | +14.9% | +10.9% | +60.8% | -28.6% | +35.1% | -25.8% | -24.2% | -11.6% | +0.8% |
| 2005 | -28.3% | +1.0% | +4.7% | -17.5% | +16.6% | -6.3% | -4.6% | +5.6% | +39.6% | -7.0% | -4.1% | +15.2% |
| 2004 | +91.0% | -23.0% | +9.9% | -23.2% | +6.8% | -11.7% | -0.8% | -16.9% | -8.0% | -6.2% | -15.5% | +89.9% |
| 2003 | -16.4% | -22.7% | +32.8% | +10.2% | +10.8% | -2.1% | +40.2% | +7.9% | -11.8% | +3.7% | -0.5% | -19.9% |
| 2002 | -1.2% | -0.5% | +2.4% | +16.6% | +19.0% | -8.1% | -23.3% | +26.3% | -28.0% | -17.8% | -5.1% | -7.7% |
| 2001 | -14.3% | -11.1% | +12.5% | -0.2% | -10.9% | +11.3% | +1.1% | -8.9% | -2.4% | -3.8% | +3.9% | +6.3% |
| 2000 | -2.4% | +29.3% | +19.8% | -20.6% | -3.8% | +17.0% | +5.6% | -5.3% | -2.8% | -7.6% | -13.4% | +0.0% |
| 1999 | +12.2% | -18.2% | -6.7% | -14.3% | -11.1% | -3.0% | +9.5% | +14.8% | +10.2% | -15.2% | +9.6% | +0.0% |
| 1998 | -18.8% | +7.7% | -14.3% | +2.2% | -1.1% | -1.5% | -25.6% | +0.0% | -18.2% | +30.9% | -5.3% | +36.2% |
| 1997 | — | — | — | — | — | — | — | — | +1.1% | -23.7% | -32.4% | -12.4% |
| Avg | +0.9% | +6.8% | +2.7% | +3.4% | +2.7% | +3.7% | +9.8% | +3.0% | +7.0% | -4.3% | -5.6% | +5.9% |
| Median | -2.4% | +0.9% | +2.4% | -0.2% | +1.4% | -4.4% | +6.7% | -1.1% | -0.9% | -7.0% | -5.1% | +0.0% |
| Last 5Y Avg | -4.4% | +8.5% | -16.3% | +22.6% | +10.5% | +13.9% | +56.4% | +17.2% | +14.9% | +11.8% | -5.2% | +11.8% |
| Std Dev (σ) | 31.2% | 29.0% | 16.8% | 32.0% | 15.3% | 20.7% | 30.5% | 19.5% | 27.2% | 22.2% | 15.8% | 26.1% |
| Consistency (μ/σ) | 0.03 | 0.23 | 0.16 | 0.11 | 0.17 | 0.18 | 0.32 | 0.16 | 0.26 | -0.19 | -0.35 | 0.22 |
| Win Rate (%) | 41% | 59% | 52% | 48% | 55% | 29% | 61% | 46% | 45% | 31% | 28% | 48% |
| Winning / Losing Months | ▲12▼17 | ▲17▼12 | ▲15▼14 | ▲14▼15 | ▲16▼13 | ▲8▼20 | ▲17▼11 | ▲13▼15 | ▲13▼16 | ▲9▼20 | ▲8▼21 | ▲14▼15 |
| Longest Win / Loss Streak | ▲4▼4 | ▲4▼4 | ▲15▼12 | ▲3▼4 | ▲7▼4 | ▲2▼9 | ▲6▼3 | ▲2▼6 | ▲3▼5 | ▲2▼5 | ▲2▼7 | ▲4▼3 |
| Best | +91.0%in January 2004 | +122.0%in February 2017 | +34.7%in March 2006 | +144.2%in April 2026 | +48.5%in May 2013 | +60.8%in June 2006 | +103.6%in July 2021 | +47.6%in August 2025 | +83.0%in September 2021 | +65.7%in October 2021 | +35.2%in November 2020 | +89.9%in December 2004 |
| Worst | -47.3%in January 2022 | -26.7%in February 2009 | -25.3%in March 2022 | -30.5%in April 2011 | -28.4%in May 2016 | -18.8%in June 2010 | -38.0%in July 2008 | -22.8%in August 2011 | -28.0%in September 2002 | -48.4%in October 2023 | -32.4%in November 1997 | -25.0%in December 2018 |
−48.4%+144.2%
2026
Jan+27.0%
Feb+46.0%
Mar-0.9%
Apr+144.2%
May+2.0%
Jun+17.5%
Jul—
Aug—
Sep—
Oct—
Nov—
Dec—
2025
Jan-31.9%
Feb-14.9%
Mar-24.4%
Apr+17.0%
May+11.8%
Jun+35.5%
Jul+30.7%
Aug+47.6%
Sep+20.7%
Oct-13.7%
Nov-11.6%
Dec-12.1%
2024
Jan-44.0%
Feb+9.6%
Mar-23.8%
Apr-3.4%
May-3.9%
Jun-3.0%
Jul+68.9%
Aug-19.4%
Sep-15.5%
Oct+9.6%
Nov-15.6%
Dec+39.9%
2023
Jan+73.9%
Feb-4.6%
Mar-7.0%
Apr-20.2%
May+33.4%
Jun+24.9%
Jul+26.4%
Aug-2.2%
Sep-10.4%
Oct-48.4%
Nov-2.5%
Dec+15.5%
2022
Jan-47.3%
Feb+6.7%
Mar-25.3%
Apr-24.4%
May+9.1%
Jun-10.5%
Jul+52.1%
Aug+27.4%
Sep-3.0%
Oct+45.9%
Nov+26.7%
Dec-22.9%
2021
Jan-9.5%
Feb+22.3%
Mar-10.0%
Apr-10.3%
May-0.4%
Jun+22.7%
Jul+103.6%
Aug+32.7%
Sep+83.0%
Oct+65.7%
Nov-23.0%
Dec+38.8%
2020
Jan+2.5%
Feb+2.4%
Mar-20.5%
Apr+4.2%
May-5.2%
Jun+18.8%
Jul+4.6%
Aug-13.2%
Sep-21.9%
Oct-12.2%
Nov+35.2%
Dec+53.3%
2019
Jan-11.3%
Feb+16.8%
Mar-5.5%
Apr+15.9%
May+9.4%
Jun-5.7%
Jul-20.6%
Aug+2.3%
Sep+33.6%
Oct-6.7%
Nov+13.2%
Dec+5.8%
2018
Jan-4.1%
Feb-11.9%
Mar-1.7%
Apr+3.1%
May+12.1%
Jun-9.6%
Jul-1.7%
Aug+9.5%
Sep-12.3%
Oct-13.5%
Nov-2.1%
Dec-25.0%
2017
Jan-2.1%
Feb+122.0%
Mar-8.2%
Apr-5.0%
May+0.2%
Jun-18.1%
Jul+7.7%
Aug-16.8%
Sep+21.7%
Oct-11.7%
Nov-29.4%
Dec+6.3%
2016
Jan-21.3%
Feb-19.6%
Mar-3.4%
Apr+22.6%
May-28.4%
Jun+59.4%
Jul+8.1%
Aug+39.1%
Sep+32.6%
Oct+7.5%
Nov-13.3%
Dec-19.4%
2015
Jan+4.3%
Feb-0.8%
Mar-11.4%
Apr+8.1%
May-5.1%
Jun-5.0%
Jul-1.8%
Aug+3.1%
Sep+10.4%
Oct-19.2%
Nov-3.9%
Dec-5.1%
2014
Jan-18.8%
Feb-6.4%
Mar+21.3%
Apr-10.2%
May-11.7%
Jun-4.9%
Jul+28.4%
Aug-8.0%
Sep-0.4%
Oct+4.7%
Nov+0.8%
Dec-4.5%
2013
Jan+5.0%
Feb+0.9%
Mar+24.4%
Apr-13.4%
May+48.5%
Jun-4.9%
Jul+12.4%
Aug+1.3%
Sep+52.6%
Oct+7.1%
Nov+11.0%
Dec+9.2%
2012
Jan+44.2%
Feb+6.7%
Mar+21.3%
Apr+47.4%
May-11.2%
Jun-3.9%
Jul-4.1%
Aug-6.0%
Sep-0.9%
Oct-13.8%
Nov-4.3%
Dec-5.5%
2011
Jan+9.2%
Feb+36.6%
Mar+17.3%
Apr-30.5%
May+1.4%
Jun-9.5%
Jul+8.2%
Aug-22.8%
Sep-18.8%
Oct-1.1%
Nov-23.3%
Dec-24.6%
2010
Jan+37.9%
Feb+40.1%
Mar+5.1%
Apr+9.3%
May-20.1%
Jun-18.8%
Jul-20.0%
Aug-21.1%
Sep+32.5%
Oct-24.5%
Nov-22.5%
Dec+29.0%
2009
Jan-28.8%
Feb-26.7%
Mar+14.0%
Apr-15.6%
May-9.7%
Jun-8.6%
Jul+10.0%
Aug-9.1%
Sep+54.1%
Oct+0.8%
Nov+13.6%
Dec-12.0%
2008
Jan+9.8%
Feb+9.0%
Mar+15.8%
Apr+0.6%
May+2.4%
Jun-11.1%
Jul-38.0%
Aug-8.8%
Sep-15.1%
Oct-26.1%
Nov-20.1%
Dec-6.4%
2007
Jan+17.4%
Feb+0.7%
Mar+5.4%
Apr-8.7%
May+6.3%
Jun-0.2%
Jul+25.7%
Aug-9.1%
Sep+7.1%
Oct-2.6%
Nov-16.3%
Dec+1.2%
2006
Jan-8.6%
Feb+0.3%
Mar+34.7%
Apr+14.9%
May+10.9%
Jun+60.8%
Jul-28.6%
Aug+35.1%
Sep-25.8%
Oct-24.2%
Nov-11.6%
Dec+0.8%
2005
Jan-28.3%
Feb+1.0%
Mar+4.7%
Apr-17.5%
May+16.6%
Jun-6.3%
Jul-4.6%
Aug+5.6%
Sep+39.6%
Oct-7.0%
Nov-4.1%
Dec+15.2%
2004
Jan+91.0%
Feb-23.0%
Mar+9.9%
Apr-23.2%
May+6.8%
Jun-11.7%
Jul-0.8%
Aug-16.9%
Sep-8.0%
Oct-6.2%
Nov-15.5%
Dec+89.9%
2003
Jan-16.4%
Feb-22.7%
Mar+32.8%
Apr+10.2%
May+10.8%
Jun-2.1%
Jul+40.2%
Aug+7.9%
Sep-11.8%
Oct+3.7%
Nov-0.5%
Dec-19.9%
2002
Jan-1.2%
Feb-0.5%
Mar+2.4%
Apr+16.6%
May+19.0%
Jun-8.1%
Jul-23.3%
Aug+26.3%
Sep-28.0%
Oct-17.8%
Nov-5.1%
Dec-7.7%
2001
Jan-14.3%
Feb-11.1%
Mar+12.5%
Apr-0.2%
May-10.9%
Jun+11.3%
Jul+1.1%
Aug-8.9%
Sep-2.4%
Oct-3.8%
Nov+3.9%
Dec+6.3%
2000
Jan-2.4%
Feb+29.3%
Mar+19.8%
Apr-20.6%
May-3.8%
Jun+17.0%
Jul+5.6%
Aug-5.3%
Sep-2.8%
Oct-7.6%
Nov-13.4%
Dec+0.0%
1999
Jan+12.2%
Feb-18.2%
Mar-6.7%
Apr-14.3%
May-11.1%
Jun-3.0%
Jul+9.5%
Aug+14.8%
Sep+10.2%
Oct-15.2%
Nov+9.6%
Dec+0.0%
1998
Jan-18.8%
Feb+7.7%
Mar-14.3%
Apr+2.2%
May-1.1%
Jun-1.5%
Jul-25.6%
Aug+0.0%
Sep-18.2%
Oct+30.9%
Nov-5.3%
Dec+36.2%
1997
Jan—
Feb—
Mar—
Apr—
May—
Jun—
Jul—
Aug—
Sep+1.1%
Oct-23.7%
Nov-32.4%
Dec-12.4%
Avg
Jan+0.9%
Feb+6.8%
Mar+2.7%
Apr+3.4%
May+2.7%
Jun+3.7%
Jul+9.8%
Aug+3.0%
Sep+7.0%
Oct-4.3%
Nov-5.6%
Dec+5.9%
Median
Jan-2.4%
Feb+0.9%
Mar+2.4%
Apr-0.2%
May+1.4%
Jun-4.4%
Jul+6.7%
Aug-1.1%
Sep-0.9%
Oct-7.0%
Nov-5.1%
Dec+0.0%
Last 5Y Avg
Jan-4.4%
Feb+8.5%
Mar-16.3%
Apr+22.6%
May+10.5%
Jun+13.9%
Jul+56.4%
Aug+17.2%
Sep+14.9%
Oct+11.8%
Nov-5.2%
Dec+11.8%
Std Dev (σ)
Jan31.2%
Feb29.0%
Mar16.8%
Apr32.0%
May15.3%
Jun20.7%
Jul30.5%
Aug19.5%
Sep27.2%
Oct22.2%
Nov15.8%
Dec26.1%
Consistency (μ/σ)
Jan0.03
Feb0.23
Mar0.16
Apr0.11
May0.17
Jun0.18
Jul0.32
Aug0.16
Sep0.26
Oct-0.19
Nov-0.35
Dec0.22
Win Rate (%)
Jan41%
Feb59%
Mar52%
Apr48%
May55%
Jun29%
Jul61%
Aug46%
Sep45%
Oct31%
Nov28%
Dec48%
Winning / Losing Months
Jan▲12▼17
Feb▲17▼12
Mar▲15▼14
Apr▲14▼15
May▲16▼13
Jun▲8▼20
Jul▲17▼11
Aug▲13▼15
Sep▲13▼16
Oct▲9▼20
Nov▲8▼21
Dec▲14▼15
Longest Win / Loss Streak
Jan▲4▼4
Feb▲4▼4
Mar▲15▼12
Apr▲3▼4
May▲7▼4
Jun▲2▼9
Jul▲6▼3
Aug▲2▼6
Sep▲3▼5
Oct▲2▼5
Nov▲2▼7
Dec▲4▼3
Best
Jan+91.0%2004
Feb+122.0%2017
Mar+34.7%2006
Apr+144.2%2026
May+48.5%2013
Jun+60.8%2006
Jul+103.6%2021
Aug+47.6%2025
Sep+83.0%2021
Oct+65.7%2021
Nov+35.2%2020
Dec+89.9%2004
Worst
Jan-47.3%2022
Feb-26.7%2009
Mar-25.3%2022
Apr-30.5%2011
May-28.4%2016
Jun-18.8%2010
Jul-38.0%2008
Aug-22.8%2011
Sep-28.0%2002
Oct-48.4%2023
Nov-32.4%1997
Dec-25.0%2018
−48.4%+144.2%
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