Big Oil CEOs Blame 'Uncertainties' for Lower First-Quarter Results

Lower oil prices, rising economic uncertainties and growing pessimism among consumers lowered first-quarter financial results from four large integrated oil supermajors: Exxon Mobil Corporation (NYSE:XOM) (Spring, Texas), Chevron Corporation (NYSE:CVX) (Houston, Texas), Shell plc (NYSE:SHEL) (London, England) and BP (NYSE:BP) (London, England).