Stocks Hit Record Highs as Oil Prices Tumble

On August 4, 2026, major stock indexes closed at record highs after Caterpillar and others issued upbeat forecasts. Brent crude — a key global oil price — fell over 5%, settling at $79.45 the next day as progress in Iran talks eased fears of supply disruptions. Cheaper oil helps keep inflation in check, which could eventually lower mortgage and loan rates.