Chesapeake leads energy stock gains By: MarketWatch February 13, 2012 at 10:15 AM EST Analysts are busy making energy-sector changes Monday, but Cheaspeake’s the big gainer in the early going. Read More >> Related Stocks: Baker Hughes Inc Chesapeake Energy EQT Corp Helmerich & Payne Noble Energy Oceaneering International Patterson-Uti Energy Standard & Poors 500