Anyone who showed a little faith at the depths of the selloff is looking pretty smart now. Shares are up 128% in the past year, vs. a 17% gain for the S&P 500. And there could be more momentum ahead: The stock’s at all-time highs and well above its 50- and 200-day moving averages.
But don’t be surprised if the bottom falls out. The forward price-to-earnings ratio of 71 is pretty rich — even for a company with a compound annual growth forecast of 45% a year for the next five years. Oh, and about 25% of the float is sold short.