May 4 (Reuters) - U.S. shale producer Diamondback Energy(FANG.O), opens new tab surpassed Wall Street expectations for first-quarter profit on Monday, helped by higher oil prices and output. Shale producer Diamondback Energy beats first-quarter profit estimates | Reuters Exclusive news, data and analytics for financial market professionalsLearn more aboutRefinitiv Companies Follow The first quarter was marked by geopolitical uncertainty and extreme volatility in oil prices, which have surged more than 87% t ...