s stock after selling 50,984 shares during the period. Amazon. com comprises approximately 1. 8% of Sigma Planning Corp rating in a research report on Friday, July 31st. Citigroup reissued a rating on shares of Amazon. com in a research note on Friday, August 14th. Sanford C. Bernstein reissued an ll want to hear this. MarketBeat keeps track of Wall Street 6% during the 2nd quarter, according to the company in its most recent filing with the Securities and Exchange Commission.