CNBC | Is Big Oil getting its groove back? CNBC In the last two weeks of the quarter, crude oil began to bounce back from multi-year lows. Since March 18, oil has rallied 36 percent, helping boost the likes of Exxon Mobil and Chevron. According to one trader, the larger energy names can expect to ... Top oil firms align trading and refining units Little chance Big Oil's refining boom will last for long |