Energy stocks among top S&P weekly gainers By: MarketWatch May 03, 2013 at 12:11 PM EDT Energy stocks gain Friday, set to end the week ahead of most S&P 500 Index subsectors, up nearly 3% so far. Read More >> Related Stocks: Chesapeake Energy Chevron Corp ConocoPhillips EQT Corp Exxon Mobil Hess Corp Occidental Petroleum Wpx Energy Inc