Early movers: MON, TPUB, SLB, BIG, AFL, FCX, LC, BA, VRX & more By: CNBC.com News May 23, 2016 at 07:52 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: AFLAC Anthem Inc Big Lots Boeing Co CF Industries Holdings Cigna Corp First Data Corp Freeport-McMoRan Gannett Inc Lendingclub Corp Monsanto Co Office Depot Schlumberger Ltd Staples Via Renewables Inc Cl A Viacom Wal-Mart Stores, Inc.