http://triblive.com/business/johndorfman/13698913-74/micron-and-fiat-have-doubled-and-are-still-cheap

Just because a stock has doubled doesn't mean you've missed your chance to profit.

Amazon.com shares doubled in 2003 and have marched to a further 2,100 percent gain since. Micron Technology, Microsoft and many other stocks have scored handsome gains even after they doubled in a year.