It was a week where oil prices clocked their largest monthly gain since May 2009 and natural gas rallied to a five-week high. However, with earnings again remaining front and center, the major headlines came from Exxon Mobil Corp. (XOM - Analyst Report) and Chevron Corp.’s (CVX - Analyst Report) first quarter outperformance, where they saw off plunging oil prices to beat estimates on refining strength. - See more at: http://www.zacks.com/stock/news/173703/oil-amp-gas-stock-roundup-integrated-business-model-saves-exxon-chevron#sthash.RrDVL2u2.dpuf