SPY is trading at $767.45, down 0.68% on August 18, 2026, as the U.S.-Iran ceasefire expired and President Trump declined to extend it, while Brent crude rose above $90.

  • The 30-year Treasury yield reached 5.33%, pressuring equity valuations and reviving inflation concerns.
  • Technology and semiconductor shares led the retreat, broadening the risk-off move across the S&P 500.
  • Elevated geopolitical uncertainty and energy-supply risks remain key risks for August 19.