shares of carmax inc kmx inched 064 higher to 9092 wednesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 029 to 414077 and the dow jones industrial average djia rising 018 to 3296923 this was the stocks second consecutive day of gains carmax inc closed 6506 short of its 52week high 15598 which the company reached on november 8th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as copart inc cprt rose 029 to 12463 autonation inc an rose 101 to 12608 and penske automotive group inc pag rose 121 to 12022 trading volume 842607 remained 527312 below its 50day average volume of 14 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