Coherent stock: what to watch Tuesday after bondable diamond cooling launch
Coherent shares fell 2.5% Friday to $191.04 ahead of the U.S. market holiday, after launching “bondable diamond” thermal-management components for chips. The stock saw heavy trading and volatility, opening at $197 and touching a low of $189.59. U.S. markets reopen Tuesday as Photonics West begins in San Francisco. Coherent forecasts Q2 fiscal 2026 revenue between $1.56 billion and $1.70 billion.