Shares of Athlon Energy Inc. (NYSE: ATHL) soared 25% to a 52-week high of $58.30 Monday morning after agreeing to be bought by Encana Corp. (NYSE: ECA) for $5.93 billion in cash.
Encana, Canada's second-largest natural gas producer, is paying $58.50 a share for the Fort Worth, Texas-based independent oil exploration and production company.