shares of marathon petroleum corp mpc slid 285 to 10675 tuesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 064 to 410990 and dow jones industrial average djia falling 101 to 3301214 marathon petroleum corp closed 3208 short of its 52week high 13883 which the company achieved on april 3rd the stock underperformed when compared to some of its competitors tuesday as exxon mobil corp xom fell 243 to 10252 and chevron corp cvx fell 235 to 15351 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