Amazon Is Worth More Than Wal-Mart, Costco And Target Combined By: Benzinga via Benzinga July 28, 2016 at 16:48 PM EDT Ahead of its earnings report, Amazon.com, Inc. (NASDAQ: AMZN)’s market cap surpassed $355.5 billion, making it one of the 10 ... Read More >> Related Stocks: Amazon.com Bio-Techne Corp Costco Wholesale Target Corp Wal-Mart Stores, Inc.