shares of phillips 66 psx slumped 064 to 10889 thursday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 064 to 453741 and dow jones industrial average djia falling 067 to 3528272 phillips 66 closed 464 short of its 52week high 11353 which the company reached on november 14th trading volume 29 m remained 294086 below its 50day average volume of 32 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