Nabors weighs on energy stocks By: MarketWatch September 25, 2012 at 10:29 AM EDT First Solar, Pioneer Natural, Exxon rise on stronger oil prices, but oil-service shares weigh on energy stocks Read More >> Related Stocks: Chevron Corp Energy Select Sector SPDR Exxon Mobil First Solar Marathon Petroleum Nabors Industries PHLX Oil Service Sector Index Standard & Poors 500