shares of cadence design systems inc cdns shed 006 to 15139 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 075 to 387198 and dow jones industrial average djia falling 039 to 3273295 cadence design systems inc closed 4358 below its 52week high 19497 which the company reached on august 16th the stock demonstrated a mixed performance when compared to some of its competitors monday as autodesk inc adsk fell 097 to 21430 synopsys inc snps fell 111 to 29255 and ansys inc anss rose 012 to 22116 trading volume 15 m remained 454578 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