If any investor has stood the test of time, it is Warren Buffett, and with good reason. For years, the “Oracle of Omaha” has ...

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

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