Markets Ignite in Massive Relief Rally: Nasdaq Explodes 3%+, Dow & S&P Soar as U.S.-Iran Ceasefire Cracks Open the Strait of Hormuz
All three major U.S. stock indices closed higher on Monday, June 15, 2026, with strong gains driven by a breakthrough U.S.-Iran ceasefire deal that paves the way to reopen the Strait of Hormuz.
Dow Jones Industrial Average (DJIA) – Close: 51,671.83 +469.57 points (+0.92%).
S&P 500 – Close: 7,554.29 – +122.83 points (+1.65%).
Nasdaq Composite – Close: 26,683.94 – +795.10 points (+3.07%)
The Nasdaq was the clear outperformer, surging on renewed enthusiasm for tech and AI-related stocks. Semiconductor and growth names led the rally as lower oil prices and reduced risk premium supported risk-on sentiment.
SpaceX shares also continued climbing post-IPO – SpaceX stock closed its second day of trading up 19.6% today, pushing the company’s market cap above $2.5 trillion for the first time.
SpaceX added $420 billion to its market cap today.



