Oil Prices Slump to 3-Month Lows, Exxon and Chevron Stocks Fall After U.S., Iran Deal

Oil prices slumped to three-month lows of just above $80 a barrel early Monday after the U.S. and Iran reached an interim deal that includes plans to reopen the Strait of Hormuz. Exxon Mobil Chevron and other energy stocks were among the sharpest fallers in the S&P 500 ahead of the open as the broader market looked set to rally. Energy infrastructure company Sempra was down 4.7%, while Occidental Petroleum ConocoPhillips and Exxon were all around 3% lower.