shares of quest diagnostics inc dgx slid 103 to 14120 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 058 to 410060 and dow jones industrial average djia falling 059 to 3340238 the stocks fall snapped a threeday winning streak quest diagnostics inc closed 1714 short of its 52week high 15834 which the company achieved on december 29th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as unitedhealth group inc unh fell 019 to 49325 iqvia holdings inc iqv fell 162 to 19670 and centene corp cnc fell 107 to 6398 trading volume 970085 remained 231173 below 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