US energy stocks fell before market opening.

Energy stocks fell in pre-market trading due to a sharp drop in oil prices below $100 per barrel. Western Oil Company's stock price fell by 7.8%, APA's stock price fell by 9.8%, Diamondback Energy's stock price fell by 7.9%, ConocoPhillips' stock price fell by 7%, and Cenovus Energy's stock price fell by 5.7%.