Major U.S. equity benchmarks closed lower on Thursday, April 23, 2026, as geopolitical developments in the Middle East introduced fresh volatility into global markets. The S&P 500 declined by 0.4%, while the technology-heavy Nasdaq 100 fell 0.6%. The downturn followed a day of fluctuating sentiment as market participants monitored the status of diplomatic negotiations involving Iran and the security of maritime trade routes. Despite the broader decline, the semiconductor sector maintained a positive trajectory, marking its 17th consecutive session of gains.
Geopolitical risks intensified late Thursday following statements from President Donald Trump regarding the Strait of Hormuz. The President announced that he had ordered the U.S. Navy to engage any vessel found laying mines in the strategic waterway, a move aimed at preventing further disruptions to global shipping. While issuing the directive, the President noted that Tehran appears to be seeking a diplomatic resolution and confirmed that talks are currently underway. However, he cautioned the public to anticipate higher gasoline prices for a temporary period as the situation stabilizes.
In a separate diplomatic development, President Trump confirmed that Israel and Lebanon have agreed to extend their current ceasefire by an additional three weeks. The extension is intended to provide negotiators with the necessary time to finalize a long-term agreement. Administration officials indicated that the move is a critical step toward resolving the broader conflict involving U.S. forces and Iran. Despite this diplomatic progress, reports from Iran’s Mehr news agency indicated that air defense systems were activated over portions of Tehran late Thursday to counter unidentified hostile targets, underscoring the ongoing military friction in the region.
Commodity and currency markets reacted to the heightened regional tensions. West Texas Intermediate crude oil opened 0.8% higher in early Friday trading, reflecting concerns over potential supply constraints in the Persian Gulf. In the currency markets, the dollar index rose for a third consecutive session on Thursday, marking its strongest performance of the month. Concurrently, U.S. Treasuries faced selling pressure, with yields rising as prices fell across the curve.
Corporate earnings provided a significant counterpoint to the broader market trend. Intel Corp. shares surged approximately 15% in after-market trading on Thursday following the release of a robust financial outlook. The company attributed its projected growth to sustained demand for artificial intelligence infrastructure, forecasting second-quarter revenue between $13.8 billion and $14.8 billion. This gain followed a lackluster regular session for the wider market but bolstered the semiconductor index. As of early Friday, futures for major Asian indices, including those in Japan, South Korea, and Australia, were trading lower in response to the U.S. session’s close.