[The three major U.S. stock indexes collectively closed down, and the storage and optical communications sectors soared] On September 5, the three major U.S. stock indexes collectively closed down, with the Dow Jones Industrial Average falling 0.51%, the Nasdaq Composite Index falling 0.29%, and the S&P 500 Index falling 0.38%. The Philadelphia Semiconductor Index rose by more than 3%; the storage sector surged, with SanDisk rising by more than 11%, SK Hynix rising by more than 8%, Seagate Technology falling by more than 6%, Western Digital rising by more than 5%, and Micron Technology rising by more than 6%; the optical communications sector rose, with Marvell Technology rising by more than 7%, Coherent rising by more than 6%, Corning rising by more than 5%, and Lumentum rising by 4%. Lululemon fell more than 17%; Tesla's Cybercab update failed to meet expectations, and its stock price fell nearly 6%.