U.S. Stocks Close | AI 'Oracle' Falters Before Dawn; Philadelphia Semiconductor Index Surges Over 8%; Cloud, Storage, and Optical Stocks Rally—SanDisk Jumps 26%, NEBIUS Soars 27%, Lumentum Rises Over 15%; Dollar Plunges, Gold Reclaims $4,100
wallstreetcn · Jul 31 07:05