Energy stocks were whipsawed Monday, erasing earlier losses that arose after the world's oil producers failed to agree on a production output freeze on Sunday.
The conference's failure sent U.S. crude prices tumbling as much as 6.8 percent as traders resumed the commodity's sell-off. WTI was down 1.2 percent in the afternoon.
Chesapeake Energy was up 0.2 percent in afternoon trade, but closed 1.16 percent lower. Marathon Oil shares added as much as 3 percent, closing up 2.69 percent. Both stocks fell more than 8 percent at session lows.