shares of marathon petroleum corp mpc slid 060 to 11031 friday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 014 to 419198 and dow jones industrial average djia falling 033 to 3342663 marathon petroleum corp closed 2852 short of its 52week high 13883 which the company reached on april 3rd the stock underperformed when compared to some of its competitors friday as exxon mobil corp xom rose 046 to 10626 and chevron corp cvx rose 079 to 15523 trading volume 23 m remained 20 million below its 50day average volume of 43 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use