The US stock market added $675 billion in market capitalization at the open on July 27, 2026, the largest single-session gain in 2026 so far. The surge was driven by a geopolitical de-escalation between the US and Iran, which eased oil prices and sparked a broad risk-on move. The S&P 500 opened up 0.96%, the Nasdaq-100 gained 1.61% in pre-market trading, and the Dow added 0.95%. The week ahead carries higher stakes with quarterly earnings from Microsoft, Meta, Amazon, and Apple, as well as a Federal Reserve meeting where rates are expected to remain unchanged.
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