The S&P 500 and Nasdaq Composite reached new record highs on Wednesday, April 15, 2026. The S&P 500 closed at 7,022.95. The Nasdaq finished at 24,016.02.
Investor optimism regarding diplomatic progress in the U.S.-Iran conflict fueled the rally. This development eased concerns about sustained geopolitical uncertainty and its economic impact.
The technology sector served as the primary engine for the market's ascent. The Nasdaq extended its winning streak to ten consecutive days.
Tesla, Apple, and Taiwan Semiconductor led gains in semiconductor and artificial intelligence stocks. Investors prioritized corporate earnings and technological growth over short-term geopolitical disruptions.