Wall Streets S&P 500 and Nasdaq declined on Monday, dragged down by a sharp sell-off in technology and semiconductor stocks.Investors reacted to fresh U.S. sanctions against Iran, mounting political pushback on AI data centers, and looming market catalysts, including Nvidias earnings and upcoming Fed inflation reports.

U.S. stock futures were mixed on Monday, as the Dow Jones index rose, the S&P 500 and Nasdaq 100 indices fell, after Friday's higher close.

US stocks opened lower on Monday as investors weighed rising US-Iran tensions and awaited Nvidias quarterly results. The Dow, S&P 500 and Nasdaq fell at the open, while markets…