Aehr Test's stock tumbled 8.31% in pre-market trading, marking a significant pullback after a period of strong performance.

The decline is attributed to mounting profit-taking pressure following multiple consecutive sessions of sharp gains, which were initially driven by an oversold recovery and a $41 million AI chip testing order. Additionally, investor sentiment continues to be weighed down by lingering concerns over potential share dilution stemming from the company's earlier $60 million common stock public offering.

The weakness was amplified by broad selling pressure across the semiconductor equipment sector during the session, contributing to the stock's downward movement.