
UnitedHealth jumps after Berkshire Hathaway buys new stake
(Reuters) -Shares of UnitedHealth Group surged more than 12% in premarket trading on Friday after Warren Buffett’s Berkshire Hathaway revealed a new investment in the health insurer. Berkshire owned 5.04 million UnitedHealth shares worth about $1.57 billion as of June 30, it said in a U.S. Securities and Exchange Commission filing. The investment comes at…