Aehr Test Systems drawdown: 57.4% below the all-time high (price)
Aehr Test Systems is 57.4% below its all-time high, set Aug 17, 2026 (as of market close, Oct 20, 2026), measured on price alone — dividends are not included, the convention headlines and crash histories use. The chart shows every day as a percentage of the highest level reached up to that point: 100% means a fresh record, everything below is a drawdown.
- Below all-time high
- −57.4%
- 42.6% of ATH
- All-time high
- $145.61
- Aug 17, 2026
- Time below the high
- 2 mo
- since Aug 17, 2026
- Worst-ever drawdown
- −98.0%
- Nov 22, 2011
- Longest underwater
- 24.1 yrs
- between all-time highs
- Today's level first reached
- Apr 8, 2026
- 6 mo ago
- Last time this deep
- Jan 8, 2026
- in a previous episode
% of all-time high since 1997: price#
The classic underwater chart (drawdown curve), drawn as % of the all-time high — 100% is a fresh record, everything below it is time spent underwater. Basis and range are in the URL, so a particular view is a link.
The deepest drawdowns on record#
Every decline of 15% or more from an all-time high (price basis), deepest first.
| Peak | Trough | Depth | Peak → trough | Recovered by | Underwater |
|---|---|---|---|---|---|
| Sep 15, 1997 | Nov 22, 2011 | −98.0% | 14.2 yrs | Nov 3, 2021 | 24.1 yrs |
| Aug 1, 2023 | Apr 8, 2025 | −87.4% | 1.7 yrs | Apr 8, 2026 | 2.7 yrs |
| Nov 5, 2021 | Jul 1, 2022 | −73.0% | 8 mo | Nov 23, 2022 | 13 mo |
| Aug 17, 2026 | Oct 16, 2026 | −58.4% | 2 mo | not yet | 2 mo+ |
| Jun 4, 2026 | Jul 29, 2026 | −43.9% | 55 days | Aug 11, 2026 | 2 mo |
| Mar 23, 2023 | Apr 26, 2023 | −39.8% | 34 days | Jun 2, 2023 | 2 mo |
| Dec 1, 2022 | Jan 5, 2023 | −36.3% | 35 days | Jan 10, 2023 | 40 days |
| May 14, 2026 | May 19, 2026 | −23.7% | 5 days | May 26, 2026 | 12 days |
Price basis (no dividends) — the convention crash histories use. With dividends reinvested, recoveries arrive years earlier; switch the basis on the chart above to see it.
Drawdown vs what came next#
One dot per month since 1997: how far Aehr Test Systems stood below its all-time high, and the total return over the following 1, 5 and 10 years.
Read this with survivorship bias in mind: a single asset's history is one surviving sample, so past recoveries here say little about the odds ahead. Monthly windows also overlap heavily (they are not independent samples). Not investment advice.
FAQ#
- How far is Aehr Test Systems from its all-time high?
- Aehr Test Systems is currently 57.4% below its all-time high, set Aug 17, 2026 (as of market close, Oct 20, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
- What was the biggest Aehr Test Systems drawdown ever?
- The deepest decline on record in our data (since 1997) took Aehr Test Systems 98.0% below its prior high, bottoming Nov 22, 2011. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily data since -1 from AEHR; no free deep history exists for Aehr Test Systems — for a 150-year drawdown record see the S&P 500 drawdown page. The price basis excludes dividends; the total-return basis reinvests them; the real basis additionally deflates by CPI. See also returns by year. Past performance does not predict future returns; not investment advice.