Early movers: RL, CHK, PLAY, COST, LMT, JPM & more By: CNBC.com News September 30, 2015 at 07:48 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: AT&T Inc Advance Auto Parts Inc Amazon.com Apple Boeing Co Brown-Forman Chesapeake Energy Comscore Inc Costco Wholesale Dave & Buster's Entertainment Ford Motor Gap JPMorgan Chase & Co Lockheed Martin Ralph Lauren Corp Rio Tinto Plc ADR Target Corp Wal-Mart Stores, Inc.