Aehr Test Systems, Inc.

DB:AYB Stock Report

Market Cap: €2.5b

Aehr Test Systems Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

DB:AYB Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
22 Apr 26Sell€159,559Alistair SporckIndividual2,000€79.78
22 Apr 26Sell€1,509,385Rhea PosedelIndividual17,719€85.33
21 Apr 26Sell€2,349,867Alberto SalamoneIndividual30,000€80.45
21 Apr 26Sell€902,078Vernon RogersIndividual11,486€80.05
21 Apr 26Sell€4,815,528Geoffrey ScottIndividual60,000€80.83
21 Apr 26Sell€717,868Rhea PosedelIndividual8,787€81.70
20 Apr 26Sell€560,649Rhea PosedelIndividual7,500€74.75
20 Apr 26Sell€185,665Vernon RogersIndividual2,431€76.37
17 Apr 26Sell€520,967Rhea PosedelIndividual7,500€69.46
17 Apr 26Sell€1,800,088Howard SlayenIndividual25,000€72.00
16 Apr 26Sell€1,028,211Rhea PosedelIndividual15,000€68.55
16 Apr 26Sell€139,065Alistair SporckIndividual2,000€69.53
16 Apr 26Sell€368,892Vernon RogersIndividual5,000€73.78
16 Apr 26Sell€339,058Laura OliphantIndividual4,665€72.68
16 Apr 26Sell€118,822Laura OliphantIndividual1,716€69.24
15 Apr 26Sell€326,753Didier WimmersIndividual5,400€61.01
14 Apr 26Sell€1,054,971Donald RichmondIndividual17,011€62.02
10 Apr 26Sell€208,850Fariba DaneshIndividual3,500€59.67
10 Apr 26Sell€114,776Alistair SporckIndividual2,000€57.39
10 Apr 26Sell€3,414,648Gayn EricksonIndividual56,788€60.13
10 Apr 26Sell€649,284Vernon RogersIndividual10,888€59.63
09 Apr 26Sell€146,218Adil EngineerIndividual2,503€58.42
09 Apr 26Sell€924,770Donald RichmondIndividual15,751€58.71
09 Apr 26Sell€175,296Laura OliphantIndividual3,000€58.43
09 Apr 26Sell€211,279Adil EngineerIndividual3,728€56.69
09 Apr 26Sell€2,325,825Geoffrey ScottIndividual40,000€58.23
09 Apr 26Sell€1,795,080Rhea PosedelIndividual30,000€59.84
13 Feb 26Sell€354,020Rhea PosedelIndividual13,998€25.29
09 Feb 26Sell€69,498Alistair SporckIndividual3,000€23.18
22 Jan 26Sell€121,495Laura OliphantIndividual4,546€26.80
05 Nov 25Sell€134,476Howard SlayenIndividual6,000€22.41
09 Oct 25Sell€192,938Fariba DaneshIndividual9,000€21.51
25 Jul 25Sell€91,591Laura OliphantIndividual5,000€18.32
15 Jul 25Sell€36,506Alistair SporckIndividual3,000€12.17
12 May 25Sell€40,770Alberto SalamoneIndividual4,995€8.16

Insider Trading Volume

Insider Buying: AYB insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of AYB?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders1,474,3854.69%
General Public8,754,98927.8%
Institutions21,223,88067.5%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 55.65% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
7.97%
FMR LLC
2,507,792€199.6m-7.12%0.01%
7.43%
The Vanguard Group, Inc.
2,337,433€186.0m2.15%no data
6.76%
BlackRock, Inc.
2,127,105€169.3m6.23%no data
4.89%
AWM Investment Company Inc
1,536,771€122.3m-1.91%10.97%
4.1%
Baillie Gifford & Co.
1,290,734€102.7m-15.7%0.06%
2.64%
Wellington Management Group LLP
830,664€66.1m130%0.01%
2.18%
Geode Capital Management, LLC
685,694€54.6m0.82%no data
1.98%
State Street Global Advisors, Inc.
624,085€49.7m3.65%no data
1.76%
Next Century Growth Investors LLC
552,506€44.0m99.9%3.03%
1.58%
William Blair Investment Management, LLC
495,672€39.4m-44.6%0.06%
1.44%
Rice Hall James & Associates, LLC
453,568€36.1m2.07%2.27%
1.38%
Rhea Posedel
433,703€34.5m-12.2%no data
1.15%
Kennedy Capital Management LLC
360,234€28.7m40.4%0.64%
1.13%
Two Sigma Investments, LP
355,574€28.3m238%0.05%
1.01%
Gilder Gagnon Howe & Co. LLC
317,948€25.3m-1.88%0.31%
0.98%
Silvercrest Asset Management Group LLC
308,387€24.5m0.17%0.18%
0.95%
Sculptor Capital Management, Inc.
300,000€23.9m0%0.48%
0.92%
D. E. Shaw & Co., L.P.
290,291€23.1m23.9%0.02%
0.87%
UBS Asset Management AG
272,131€21.7m74.3%no data
0.86%
Gayn Erickson
270,851€21.6m-32.9%no data
0.76%
Jane Street Group, LLC
240,438€19.1m0%0.02%
0.76%
Northern Trust Global Investments
239,872€19.1m3.96%no data
0.76%
Charles Schwab Investment Management, Inc.
238,409€19.0m0%no data
0.7%
Citadel Advisors LLC
220,779€17.6m-1.12%0.01%
0.68%
Morgan Stanley
213,823€17.0m200%no data

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/05/04 01:07
End of Day Share Price 2026/05/04 00:00
Earnings2026/02/27
Annual Earnings2025/05/30

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Aehr Test Systems, Inc. is covered by 5 analysts. 4 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Christian SchwabCraig-Hallum Capital Group LLC
Egor TolmachevFreedom Broker
Danial YermakhanFreedom Broker