[Nasdaq Closes Down 0.76% as Storage and Optical Communication Sectors Decline] The three major U.S. stock indices closed mixed: the Dow Jones rose 0.26%, the Nasdaq fell 0.76%, and the S&P 500 dropped 0.28%. The storage and optical communication sectors declined, with SanDisk and Seagate Technology falling over 6%, Micron Technology and Western Digital dropping over 5%, and SK Hynix down nearly 5%. Applied Optoelectronics fell over 13%, while Lumentum and Coherent dropped over 4%.