[Optical communication concept stocks fell across the board, Marvell Tech dropped over 9%] According to Golden Finance, on July 7th, U.S. optical communication concept stocks fell across the board, with Astera Labs dropping over 11%, Credo Technology dropping over 10%, Marvell Tech dropping over 9%, Coherent, Corning, and Applied Optoelectronics all dropping over 7%, Tower Semiconductor and GlobalFoundries dropping over 6%, Lumentum, Ciena, and Nokia all dropping over 5%, and Broadcom dropping over 2%