US stocks today: US stocks end lower as Iran tensions dampen risk appetite; chipmakers drop

US stocks ended lower as Iran tensions escalated over the weekend with airstrikes between the US and Iran, pushing crude oil prices up 9.4 percent. The Nasdaq led losses, falling 1.56 percent to 25,872.77, while the S&P 500 dropped 0.79 percent to 7,515.18 and the Dow declined 0.25 percent to 52,507.85, with chipmakers like SanDisk, Marvell Technology, Western Digital and SK Hynix posting steep losses. Investors are now bracing for Fed Chair Warsh's Congressional testimony, key inflation data, and the start of Q2 earnings season led by major US banks, with markets pricing in at least one 25 basis point rate hike by year-end.