Stocks Hit Record Highs as Brent Crude Plunges Over 5%

On August 4, 2026, major stock indexes closed at record highs after Caterpillar and others issued upbeat forecasts. Brent crude fell over 5% that session, settling at $79.45 the next day as Iran-talk progress eased supply-risk premia. Lower oil pressures inflation down, which could eventually flow through to mortgage and loan rates.