Shipping costs may put retail on the naughty list By: CNBC.com News June 19, 2015 at 12:17 PM EDT Cowen and Company analyst Oliver Chen calculated how significantly reported shipping increases would hurt retailers' gross margins. Read More >> Related Stocks: Costco Wholesale Kohl's Corp Macy's Nordstrom Target Corp United Parcel Service Wal-Mart Stores, Inc.