On July 28, Aehr Test fell 9.47% in regular trading, trading at $67.29/share, with turnover of $25.98 million. The decline came amid broad selling pressure across the semiconductor equipment sector, with major peers posting significant losses including ASML Holding down 5.17%, Lam Research down 8.71%, Applied Materials down 7.91%, KLA-Tencor down 7.0%, and Amkor Technology down 22.29%.

The stock had previously surged over 40% on July 15 after reporting record quarterly orders driven by AI data center demand, with Q4 adjusted EPS of $0.11 beating estimates by a wide margin. The company has undergone significant business transformation, with AI accelerator, CPU, and network processor wafer-level burn-in testing now contributing 71% of annual revenue, while legacy EV silicon carbide business fell below 5%. Today's pullback represents a partial retracement of those gains amid sector-wide weakness.

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