Few things unsettle investors quite like the sight of a famous name heading for the exit.
So when news broke last week that investor Dan Loeb's Third Point fund had trimmed its stake in Amazon.com Inc. (NASDAQ: AMZN), just as the shares slid back from record highs, it was tempting to read it as a red flag. If one of the sharpest investors around is selling, then perhaps ordinary shareholders should worry too?
