Amazon's stock could be set to outperform after lagging this year.The market has put up a strong run this year, with the S&P 500 and Nasdaq charging to fresh highs, but Amazon's (AMZN 0.78%) stock has sat on the sidelines, basically flat. That disconnect is worth paying attention to. Amazon is firing on multiple cylinders across its businesses and has put itself in a position to generate stronger profits in the years ahead.While the stock may look stuck, the fundamentals underneath are moving in the right d ...