Why UnitedHealth Stock Rocketed Nearly 7% Higher Today

The company notched an inspiring net income beat in its latest quarter.A convincing bottom-line beat helped increase the share price of big health insurer UnitedHealth Group (UNH 6.50%) on Tuesday. Investors liked what they saw with the company's second-quarter results, and rewarded it by pushing the stock nearly 7% higher in value across the day. That compared very favorably to the S&P 500 index, which inched up by less than 1%.Top- and bottom-line increasesIn the quarter, UnitedHealth booked revenue of $9 ...