On August 4, Ultra Clean rose 9.7% in regular trading, trading at $86.48/share, with turnover of $58.06 million.

On the news front, the company released its fiscal Q2 earnings report, delivering results that significantly exceeded Wall Street expectations. Adjusted EPS came in at $0.70, beating the consensus estimate of $0.53 by 32%, representing a 112% increase from $0.33 a year earlier. Revenue reached $644.9 million, surpassing the expected $587.6 million by approximately 9.8% and growing 24.3% year-over-year from $518.8 million.

Q3 guidance was equally impressive, with the company projecting revenue of $700 million to $750 million and adjusted EPS of $0.83 to $1.03, both far exceeding analyst expectations of $667.4 million in revenue and $0.76 in EPS. The stock had already risen approximately 8.2% in the prior session ahead of the earnings release, as peer ASE Technology's strong Q2 results validated the advanced packaging momentum across the semiconductor equipment sector.

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