shares of marathon petroleum corp mpc dropped 016 to 11094 wednesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 061 to 399532 and dow jones industrial average djia falling 042 to 3396635 this was the stocks second consecutive day of losses marathon petroleum corp closed 1668 below its 52week high 12762 which the company achieved on november 25th despite its losses the stock outperformed some of its competitors wednesday as