MarketWatch | A popular energy fund is on the verge of its longest win streak ever, as oil rockets up MarketWatch The run-up for XLE, which tracks some of the biggest oil production companies and refiners, including Anadarko Petroleum Corp. APC, +1.17% Valero Energy Corp. VLO, +4.10% Hess Corp. HES, +2.45% ConocoPhillips COP, +1.16% and Exxon Mobil Corp. |