Nvidia, Salesforce and CrowdStrike lead a busy tech week as AI demand, chip shortages, tariffs, Apple, SpaceX and semiconductor stocks drive markets.

Nvidia's fiscal second-quarter revenue more than doubled and topped forecasts by its largest margin in two years, lifting chip stocks broadly

Stock Market Today: The Dow Jones index falls, but tech futures rally Thursday as Nvidia, Salesforce and CrowdStrike surge on earnings.