shares of illumina inc ilmn sank 099 to 21782 monday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 016 to 397753 and the dow jones industrial average djia rising 060 to 3243208 illumina inc closed 15334 short of its 52week high 37116 which the company reached on april 4th the stock underperformed when compared to some of its competitors monday as laboratory corp of america holdings lh rose 063 to 21978 charles river laboratories international inc crl rose 189 to 19746 and quest diagnostics inc dgx fell 045 to 13943 trading volume 677179 remained 648354 below its 50day average volume of 13 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