5 Sep 2018 Amazon reached an astounding market cap of $1 trillion on Tuesday. Whole Foods and Amazon's stock has more than doubled over the past year, but it also had a 17-year head start and its return is still less than half of Amazon's. Experienced investors like Warren Buffett recommend starting out with Amazon IPO'd on May 15, 1997, trading on the NASDAQ under the symbol of AMZN at a price of $18 a share. On IPO day the stock price rose and closed at The average Amazon stock price for the last 52 weeks is 1851.06. Year, Average Stock Price, Year Open, Year High, Year Low, Year Close, Annual %