shares of equifax inc efx slid 249 to 19559 wednesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 041 to 409195 and dow jones industrial average djia falling 011 to 3364650 the stocks fall snapped a twoday winning streak equifax inc closed 3855 short of its 52week high 23414 which the company achieved on february 2nd the stock underperformed when compared to some of its competitors wednesday as sp global inc spgi rose 026