shares of carmax inc kmx slid 195 to 5924 wednesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 120 to 378322 and dow jones industrial average djia falling 110 to 3287571 the stocks fall snapped a twoday winning streak carmax inc closed 7150 short of its 52week high 13074 which the company achieved on december 31st the stock demonstrated a mixed performance when compared to some of its competitors wednesday as carvana co cl a cvna rose 296 to 383 iaa inc iaa rose 141 to 3952 and acv auctions inc acva fell 302 to 738 trading volume 31 m eclipsed its 50day average volume of 29 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