U.S. stocks: Energy firms slammed after OPEC agreement By: MarketWatch November 28, 2014 at 06:20 AM EST Energy companies post hefty losses in U.S. premarket trade on Friday after OPEC decides to maintain its production target. Read More >> Related Stocks: Amazon.com BP Plc ADR Best Buy Carnival Corp Chevron Corp ConocoPhillips Delta Air Lines Exxon Mobil Halliburton Co Macy's Southwest Airlines Standard & Poors 500 Totalenergies Se ADR Transocean Ltd Wal-Mart Stores, Inc.