shares of phillips 66 psx sank 076 to 7755 tuesday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 037 to 463065 and the dow jones industrial average djia rising 039 to 3605263 phillips 66 closed 1679 below its 52week high 9434 which the company reached on june 10th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as exxon mobil corp xom fell 123 to 6482 chevron corp cvx fell 061 to 11383 and marathon petroleum corp mpc fell 390 to 6464 trading volume 46 m eclipsed its 50day average volume of 31 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