Yet despite the market euphoria, one gauge — popularized by none other than Warren Buffett — is flashing red. Thanks to Jeff ...

The Oracle of Omaha just made a $1.6 billion bet on a stock that is down 40 percent this year. Should you follow suit?

UnitedHealth Group Inc. (NYSE:UNH) extended its rebound Monday, climbing another 3% in premarket trading after soaring 12% on ...