In arguably quiet fashion, the healthcare sector is racing higher. Over the 90 days ending July 7, the largest basic healthcare ETF surged 12.41%. Shares of Dow component UnitedHealth Group Inc. (UNH) were even better over that span, surging 52%. Fortunately for aggressive traders, the health insurance giant can be livened up with the Direxion Daily UNH Bull 2X ETF (UNHU). UNHU, which attempts to ...