US stocks today: US stocks end higher as Iran tensions ease; major tech-related shares jump

US stocks ended sharply higher as geopolitical tensions eased after the US and Iran signed a memorandum of understanding to cease hostilities and reopen the Strait of Hormuz. The S&P 500 gained 1.16 percent to 7,439.26, the Nasdaq Composite jumped 2.04 percent to 25,812.52, and the Dow Jones rose 0.57 percent to 52,172.69, driven by a rebound in tech and AI-related shares. Additional tailwinds included Comcast's plan to spin off NBCUniversal and Sky, SpaceX's addition to the Nasdaq 100, and Alphabet's debut as a Dow component, with RBC Capital raising its S&P 500 12-month target to 8,150 from 7,900.