Astera Labs plunges 10% as optical communication stocks slideUS Stock Market UpdateJul 28, 2026 at 09:01 AMAstera Labs(ALAB.US) 盘中跌超 10%,现报 253.84 美元。该股盘前交易中已下跌超 4%,盘中延续跌势。光通信概念股早盘集体走弱,AXT Inc 与 Astera Labs 跌幅均超 4%,Marvell Tech 和 Corning 跌超 3%,Lumentum 下跌近 3%。