Lumentum Jumped Nearly 10% While Corning Barely Moved. Is the AI Optics Trade Splitting Apart?

Optical networking companies experienced divergent performance during an AI stock rebound, reflecting a shift in investor focus toward specific infrastructure components. Lumentum Holdings rose nearly 10% and led the S&P 500, while Coherent advanced 6.9%. Corning, by contrast, managed a gain of only 0.4% and remained significantly down for the week.
All three companies participate in the AI-connectivity expansion as data center operators require optical connections for accelerators communic