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United States financial markets surged in early trading on June 12, 2026, after President Donald Trump announced he had canceled planned military strikes against Iran. The S&P 500 rose 1.3%, the Dow Jones Industrial Average gained 1.6% or 802 points, and the Nasdaq composite advanced 1.8% as investors responded to a perceived reduction in geopolitical tensions and the potential for de-escalation in the Middle East. Smaller U.S. companies also rallied, with the Russell 2000 index jumping 2.6%, signaling increased appetite for risk and a shift toward sectors that tend to benefit more from lower borrowing costs and improved market sentiment. United States commodity and bond markets moved sharply in tandem with equities, reflecting a broad reassessment of risk following the policy reversal. Benchmark U.S. crude oil prices fell 2.8% to $87.56 per barrel, while Brent crude dropped 3.5% to $89.84, easing recent pressure from higher energy costs. The pullback in oil prices reduced inflation concerns and helped push the yield on the 10-year Treasury note down to 4.48% from 4.55% the previous day. Market participants adjusted their outlook for Federal Reserve monetary policy, as lower energy prices reduced the immediate urgency for additional interest rate increases, even as traders remained wary of conflicting signals from Tehran about ongoing negotiations.

Prepared by Christopher Adams and reviewed by editorial team.