shares of laboratory corp of america holdings lh rallied 124 to 24127 monday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 106 to 411041 and the dow jones industrial average djia rising 071 to 3238134 this was the stocks fifth consecutive day of gains laboratory corp of america holdings closed 7590 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 066 to 37659 quest diagnostics inc dgx rose 127 to 13165 and qiagen nv qgen rose 091 to 4658 trading volume 414621 remained 148334 below its 50day average volume of 562955 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