shares of hollyfrontier corp hfc slipped 415 to 3119 friday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 014 to 469796 and dow jones industrial average djia falling 075 to 3560198 hollyfrontier corp closed 1120 short of its 52week high 4239 which the company achieved on march 11th the stock demonstrated a mixed performance when compared to some of its competitors friday as chevron corp cvx fell 222 to 11191 phillips 66 psx fell 552 to 6964 and marathon petroleum corp mpc fell 386 to 6028 trading volume 18 m eclipsed its 50day average volume of 16 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