Only one of the four new investments was big enough to ensure that legendary investor Warren Buffett may have handled them.

UnitedHealth jumps after Berkshire Hathaway disclosed a stake in the health insurer. Applied Materials, Globant and Nu ...

(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 ...