Aehr Test Systems (AEHR) Institutional Ownership

Ownership Summary

Recent 13F filings as of December 2025 show that 8 institutional investors hold a position in Aehr Test Systems (NASDAQ:AEHR).

• The percentage of Aehr Test Systems owned by institutions changed from 71.4% in September 2025 to 0.5% in December 2025, marking a slight down trend.
• The company experienced a -0.57% quarterly change in institutional shares held, alongside a decrease of 93.94% in total owners annually.
• A review of institutional activity for Aehr Test Systems shows 4 of 8 filers increasing their positions, while 1 reduced their stake, and 3 remained unchanged.
• The total number of shares held by institutions in Aehr Test Systems decreased to 133.02K as of December 2025, a net change of down by 766 shares quarter on quarter, and down 21.05Mn shares year over year.
• With 114.90K shares, Penbrook Management LLC commands the largest institutional position in Aehr Test Systems as of December 31, 2025, equating to 0.39% of the company.
• Among the most significant buyers of Aehr Test Systems during December 2025 were NISA INVESTMENT ADVISORS, LLC (281), Versant Capital Management, Inc (181), GAMMA Investing LLC (104), Net Worth Advisory Group (18).
• Leading sellers of Aehr Test Systems stock in December 2025 included Penbrook Management LLC (1.35K).
• The top 8 institutional holders of Aehr Test Systems for the quarter ending December 2025 included Penbrook Management LLC (114.90K), Net Worth Advisory Group (13.22K), NISA INVESTMENT ADVISORS, LLC (1.78K), GAMMA Investing LLC (1.57K), Versant Capital Management, Inc (1.32K), ARMSTRONG ADVISORY GROUP, INC (134), Fortitude Family Office, LLC (60), ORG Partners LLC (30).