shares of laboratory corp of america holdings lh rose 140 to 29244 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 091 to 466897 and dow jones industrial average djia falling 089 to 3565095 this was the stocks second consecutive day of gains laboratory corp of america holdings closed 1716 short of its 52week high 30960 which the company reached on september 9th the stock demonstrated a mixed performance when compared to some of its competitors monday as idexx laboratories inc idxx fell 042 to 60534 quest diagnostics inc dgx rose 200 to 16326 and qiagen nv qgen rose 079 to 5478 trading volume 11 m eclipsed its 50day average volume of 613103 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