Halliburton, Baker Hughes spark energy stocks By: MarketWatch May 25, 2011 at 12:11 PM EDT Oil-service firms lead gains in the energy sector after Halliburton catches Wall Street’s attention with bullish comments on its second-quarter prospects. Read More >> Related Stocks: Baker Hughes Inc General Electric Halliburton Co Helmerich & Payne Nabors Industries Natl Oilwell Varco