The optical communications sector in the U.S. stock market saw a broad rally. As of the latest update, Lumentum (LITE.US) surged over 11%, while Coherent (COHR.US) rose more than 5.5%. Other notable gainers included Credo Technology (CRDO.US), Lumen Technologies (LUMN.US), and Astera Labs (ALAB.US), each climbing over 4%.