Stock Market Today, June 18: Intel Surges As Market Gains on U.S.-Iran Agreement

U.S. stock markets rallied on June 18, 2026, following a landmark U.S.-Iran agreement to end hostilities and reopen the Strait of Hormuz. The Nasdaq led gains at +1.69%, while the S&P 500 and Dow Jones also advanced. Intel surged on Apple partnership reports, while Space Exploration Technologies dropped 6% as post-IPO momentum cooled. Technology stocks outperformed as AI infrastructure demand remained strong.