shares of pioneer natural resources co pxd rose 147 to 20845 friday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 192 to 386316 and the dow jones industrial average djia rising 215 to 3128826 pioneer natural resources co closed 8001 below its 52week high 28846 which the company achieved on may 31st the stock demonstrated a mixed performance when compared to some of its competitors friday as eog resources inc eog rose 227 to