shares of equifax inc efx slid 280 to 23392 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 097 to 453276 and dow jones industrial average djia falling 096 to 3502865 this was the stocks fifth consecutive day of losses equifax inc closed 6619 short of its 52week high 30011 which the company achieved on december 13th the stock underperformed when compared to some of its competitors wednesday as fidelity national information services inc fis fell 105 to 11330 fiserv inc fisv fell 033 to 10605 and automatic data processing inc adp fell 071 to 22483 trading volume 20 m eclipsed its 50day average volume of 725969 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