Apple (NASDAQ: AAPL) is the most valuable public company in the world, with a market capitalization of $2.9 trillion. However, select Wall Street analysts believe Amazon (AMZN 3.62$285 per share. That implies 62% upside from its current share price of $175. It also implies a market value of$3 trillion.Brian Nowak at Morgan Stanley has set Alphabet with a bull-c ...