US stocks: US market's indexes advance with boost from chips, Iran optimism

U.S. stock indexes rose Thursday, led by semiconductor shares and easing inflation fears, despite anticipated Federal Reserve interest rate hikes. Intel surged to a record high after President Trump announced a deal for U.S.-based chip design and manufacturing. Oil prices slid as the U.S. and Iran extended an interim agreement, allowing for continued passage through the Strait of Hormuz.