U.S. stock index futures dropped sharply Sunday evening after ceasefire negotiations between Washington and Tehran broke down, raising fears of prolonged conflict and further disruptions to global energy markets. The deteriorating geopolitical situation sent oil prices surging and renewed inflation concerns on Wall Street.
S&P 500 futures slid 1.2% to 6,773.75, Nasdaq 100 futures fell 1.4% to 24,933.75, and Dow Jones futures declined 1.1% to 47,578.0 by 7:41 PM ET. The selloff came after President Donald Trump ordered a naval blockade of the Strait of Hormuz, effective Monday at 10:00 AM ET, targeting all maritime traffic to and from Iran. U.S. and Iranian officials met in Pakistan over the weekend but failed to bridge key differences, including Iran's nuclear program and unrestricted access through the strategically vital waterway.
The breakdown in talks signals little near-term de-escalation, keeping global oil and gas markets under significant pressure. Brent crude surged back above $100 per barrel following the announcement, amplifying fears of energy-driven inflation in the months ahead. This follows a stronger-than-expected Consumer Price Index reading for March, which showed inflation climbing sharply — largely fueled by rising energy costs — and raised the possibility that the Federal Reserve could hold interest rates steady throughout the year, weighing on economic growth.
Wall Street ended Friday on mixed footing. The S&P 500 and the Dow Jones Industrial Average closed lower, while the Nasdaq Composite edged higher, supported by gains in semiconductor stocks following strong March revenue figures from chipmaker TSMC. Investors are now closely watching the first-quarter earnings season. Goldman Sachs is set to report Monday, followed by JPMorgan Chase, Wells Fargo, and Citigroup on Tuesday — results that could set the tone for broader market sentiment amid mounting macro uncertainty.


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