On August 13, Coherent fell 3.27% in regular trading, trading at 342.96 USD/share, with turnover of $329 million, extending the post-earnings selloff that began in after-hours trading the prior session.

On the news front, Coherent reported fiscal Q4 revenue of $2.05 billion, up 34% year-over-year and exceeding the consensus estimate of $1.99 billion. Adjusted EPS came in at $1.74, a 74% increase and well above the $1.61 analyst expectation. Gross margin expanded over 200 basis points year-over-year to 40.2%. The company's fiscal Q1 guidance was equally strong, with midpoint revenue of approximately $2.3 billion and EPS of $1.95, roughly 7% and 10% above consensus respectively. Management emphasized prioritizing investment to expand manufacturing capacity and noted exceptionally strong demand for the new fiscal year.

However, ahead of the earnings release, the stock had surged 8.82% during regular trading on August 12, and accumulated gains exceeding 200% over the past 12 months. Multiple analysts raised price targets, including Morgan Stanley adjusting to $375, yet the stock's prior rally had already fully priced in the AI optical communications growth narrative, triggering classic buy-the-news profit-taking.

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