shares of pioneer natural resources co pxd slid 141 to 23016 monday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 008 to 389209 and dow jones industrial average djia falling 034 to 3351765 the stocks fall snapped a threeday winning streak pioneer natural resources co closed 5830 below its 52week high 28846 which the company achieved on may 31st the stock underperformed when compared to some of its competitors monday as eog resources inc eog rose 022 to 12775 devon energy corp dvn rose 158 to 6220 and occidental petroleum corp oxy rose 052 to 6408 trading volume 18 m remained 418758 below its 50day average volume of 22 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