shares of quest diagnostics inc dgx rallied 177 to 13594 wednesday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 036 to 384508 and the dow jones industrial average djia rising 023 to 3103768 quest diagnostics inc closed 3822 short of its 52week high 17416 which the company achieved on december 31st the stock outperformed some of its competitors wednesday as laboratory corp of america holdings lh rose 162 to 24388 qiagen nv qgen rose 017 to 4840 and sonic healthcare ltd adr skhhy rose 066 to 2275 trading volume 769058 remained 208164 below its 50day average volume of 977222 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