CarMax appoints interim CEO, flags weak Q3 outlook; shares drop
** Shares of used-car retailer CarMax KMX.N slumps more than 11% to $36 premarket ** Board member David McCreight named interim CEO and president ** McCreight is set to replace current CEO Bill Nash, effective December 1 ** Co expects Q3 net earnings per share of 18 cents to 36 cents ** Also expects Q3 comparable store sales decrease of 8% to 12% ** Stock down 50% YTD, as of last close (Reporting by Apratim Sarkar in Bengaluru) ((Apratim.Sarkar@thomsonreuters.com))