On August 12, Coherent rose 3.1% overnight, trading at $339.25/share, with turnover of $1.7235 million. The gain was driven by the company's Q4 earnings release after market close, with strong data center and communications business performance boosting after-hours sentiment.

Market consensus had projected quarterly revenue of approximately $1.986 billion, representing 31.65% year-over-year growth, with adjusted EPS of approximately $1.62, up 76.71% year-over-year. The data center and communications segment has become the primary revenue driver, with the prior quarter delivering 41% revenue growth and 49% segment profit growth year-over-year, fueled by sustained AI computing demand. Notably, the stock had plunged over 9% in the two days preceding the earnings release due to pre-earnings risk-off selling amid market concerns over 1.6T optical module orders and margin execution. The overnight rebound reflects a positive market reaction to actual results.

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