UnitedHealth was a star stock late last week, when it was revealed that Warren Buffett's Berkshire Hathaway had taken a $1.6 ...

Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies ...

In an analysis from Trilliant Health of 11 inpatient and outpatient procedures, Aetna and UnitedHealthcare had huge variations in rates across the country, across states, and even at the same facility ...