shares of laboratory corp of america holdings lh inched 090 higher to 27642 monday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 071 to 457552 and the dow jones industrial average djia rising 027 to 3495589 this was the stocks second consecutive day of gains laboratory corp of america holdings closed 4075 short of its 52week high 31717 which the company reached on december 31st the stock demonstrated a mixed performance when compared to some of its competitors monday as idexx laboratories inc idxx rose 011 to 53954 quest diagnostics inc dgx rose 057 to 14490 and qiagen nv qgen rose 100 to 4849 trading volume 454286 remained 507225 below its 50day average volume of 961511 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