shares of lyondellbasell industries nv cl a lyb shed 201 to 9156 wednesday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 023 to 470146 and the dow jones industrial average djia falling 003 to 3580438 the stocks fall snapped a twoday winning streak lyondellbasell industries nv cl a closed 2646 below its 52week high 11802 which the company reached on june 3rd the stock underperformed when compared to some of its competitors wednesday as royal dutch shell plc adr cl a rdsa rose 036 to 4424 celanese corp ce fell 091 to 16596 and westlake chemical corp wlk rose 244 to 10240 trading volume 20 m remained 26579 below 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