Technical --> See charts below. The stock has appreciated by $70 since the last breakout. The only other time that has happened, the stock cratered by $20. History does repeat
Fundamentals --> More and more competition, including Walmart announcing today free shipping to compete with AMZN. The stock is trading at 50 times 2011 earnings, with an estimate for 27.8% revenue growth. It trades nearly 2x revenues and is the most expensive Internet stock (based on P/E) of the big names
