shares of carmax inc kmx rallied 765 to 7584 wednesday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 105 to 411921 and the dow jones industrial average djia rising 002 to 3409296 this was the stocks second consecutive day of gains carmax inc closed 3859 short of its 52week high 11443 which the company reached on february 9th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as carvana co cl a cvna rose 3333 to 1356 iaa inc iaa rose 163 to 4241 and acv auctions inc acva rose 500 to 1029 trading volume 37 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