shares of pioneer natural resources co pxd slipped 376 to 20691 friday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 189 to 439794 and dow jones industrial average djia falling 130 to 3426537 this was the stocks second consecutive day of losses pioneer natural resources co closed 1513 short of its 52week high 22204 which the company reached on january 20th the stock demonstrated a mixed performance when compared to some of its competitors friday as eog resources inc eog fell 277 to 10063 concho resources inc cxo fell 602 to 6560 and apa corp apa fell 368 to 3010 trading volume 29 m eclipsed its 50day average volume of 20 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