shares of quest diagnostics inc dgx slid 133 to 13484 wednesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 059 to 395990 and the dow jones industrial average djia rising 015 to 3187484 quest diagnostics inc closed 3932 short of its 52week high 17416 which the company reached on december 31st the stock underperformed when compared to some of its competitors wednesday as laboratory corp of america holdings lh fell 027 to 24528 qiagen nv qgen fell 036 to 4687 and sonic healthcare ltd adr skhhy rose 110 to 2305 trading volume 11 m eclipsed its 50day average volume of 921931 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