BJ’s Wholesale IPO: 5 things to know about the Costco competitor By: MarketWatch May 22, 2018 at 11:01 AM EDT BJ’s Wholesale, which will go public with the ticker “BJ,” competes in the same warehouse retail space as Costco and Walmart’s Sam’s Club. Read More >> Related Stocks: Amazon.com Costco Wholesale Wal-Mart Stores, Inc.