shares of quest diagnostics inc dgx shed 106 to 13954 monday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 186 to 397375 and the dow jones industrial average djia rising 198 to 3188024 the stocks fall snapped a twoday winning streak quest diagnostics inc closed 3462 below its 52week high 17416 which the company achieved on december 31st the stock underperformed when compared to some of its competitors monday as laboratory corp of america holdings lh rose 038 to 24950 qiagen nv qgen rose 137 to 4589 and sonic healthcare ltd adr skhhy rose 107 to 2601 trading volume 12 m eclipsed its 50day average volume of 12 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