Energy stocks lower; Chevron finds gas sites By: MarketWatch December 27, 2012 at 11:10 AM EST Energy stocks trade mostly lower on Thursday, as fiscal-cliff uncertainties and the holiday week’s low volumes keep equities under pressure. Read More >> Related Stocks: Chevron Corp ConocoPhillips Energy Select Sector SPDR Exxon Mobil Freeport-McMoRan Natl Oilwell Varco Tesoro Petroleum Co Valero Energy