shares of pioneer natural resources co pxd inched 023 higher to 23035 tuesday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 146 to 407660 and the dow jones industrial average djia rising 109 to 3408604 the stocks rise snapped a twoday losing streak pioneer natural resources co closed 5811 below its 52week high 28846 which the company reached on may 31st the stock demonstrated a mixed performance when compared to some of its