** At least two brokerages lift price targets on CarMax KMX.N
** RBC sees positives in the used car retailer's improved cost efficiencies and reacceleration in retail unit demand
** Restructuring efforts beginning to gain traction, supporting KMX management's longer-term optimism around a turnaround under its new CEO - Oppenheimer
** KMX on Tuesday posted Q4 loss, hurt by a goodwill impairment charge and weak used-car demand
** BofA Global Research resumes coverage with "underperform" rating and price objective at $40
** KMX shares marginally up 0.3% at about $42 premarket
** Two of 20 brokerages rate the stock "buy" or higher, 15 "hold" and three "sell"; their median PT is $39 - data compiled by LSEG
** As of last close, stock had risen 7.8% YTD
(Reporting by Apratim Sarkar in Bengaluru)
((Apratim.Sarkar@thomsonreuters.com))