** Shares of used-car retailer CarMax KMX.N up 9.6% to $70.5 in premarket trade
** Co reports Q1 profit of $1.38 per share, compared to analysts' estimate of $1.16 per share, according to data compiled by LSEG
** KMX Q1 revenue of $7.55 bln, compared to estimate of $7.51 bln
** 12 of 18 brokerages rate the stock "buy" or higher, 4 "hold" and 2 "sell"; their median PT is $81 - LSEG data
** Up to last close, stock had fallen 21.3% YTD
(Reporting by Anshuman Tripathy)
((Anshuman.Tripathy@thomsonreuters.com))