US stocks rallied on Monday, with the Dow Jones Industrial Average closing at a record high as investors welcomed news of a preliminary agreement between the United States and Iran and continued to embrace SpaceX following its blockbuster public market debut. The Dow gained 490.38 points, or 0.96%, to close at 51,684.88. The S&P 500 advanced 1.67% to 7,555.26, while the Nasdaq Composite surged 3.07% to 26,686.64, marking its strongest daily gain since March 31. The three major indexes recorded a