U.S. Storage Chip Index Surges 11.2%, Semiconductor Sector Gains 5.2% Today

U.S. storage chip index surged 11.2% and semiconductor index gained 5.2% today (July 21). S&P 500 rose 0.9% with technology sector up 2.4%, while Nasdaq-100 climbed 1.9%.

Among top performers, Nebius Group jumped 19%, SanDisk rose 14%, Western Digital gained 12.5%, and Seagate Technology climbed 11.2%. Intel advanced 8.8%. On the downside, Adobe fell 3.1%, CrowdStrike dropped 3.7%, Workday declined 3.9%, and Thomson Reuters slid 5%.