Optics Stocks Tumble as Tech Selloff Deepens Ahead of Earnings: Coherent Tumbles 12%, Applied Optoelectronics Drops 10%, Lumentum Falls 9%

The AI optics trade powered some of the market's biggest gains this year, but a chipmaker-led selloff is now hitting Coherent, Lumentum, and Applied Optoelectronics all at once, right before each company steps up to report earnings.