shares of marathon petroleum corp mpc shed 161 to 7335 wednesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 097 to 453276 and dow jones industrial average djia falling 096 to 3502865 this was the stocks second consecutive day of losses marathon petroleum corp closed 253 below its 52week high 7588 which the company reached on january 18th the stock underperformed when compared to some of its competitors wednesday as exxon mobil corp xom rose 004 to 7311 chevron corp cvx fell 036 to 12891 and bp plc adr bp fell 086 to 3210 trading volume 66 m eclipsed its 50day average volume of 62 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