shares of marathon petroleum corp mpc shed 072 to 12031 monday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 039 to 394994 and dow jones industrial average djia falling 013 to 3370028 the stocks fall snapped a twoday winning streak marathon petroleum corp closed 281 short of its 52week high 12312 which the company reached on november 14th despite its losses the stock outperformed some of its competitors monday as exxon mobil corp xom fell 099 to 11097 chevron corp cvx fell 096 to 18124 and bp plc adr bp fell 267 to 3313true trading volume 51 m eclipsed its 50day average volume of 39 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