The shares of CarMax Inc (NYSE:KMX) are plummeting today, after the used car retailer's disappointing fourth-quarter results. The company also delayed its long-term financial target, expecting to sell over 2 million retail and wholesale units annually between 2026 and 2030, compared to its previous goal of 2026. At last glance, KMX was down 12% at $69.75, and trading at its lowest levels since February. The stock is a far cry from its March 28, 52-week high of$88.22, down 20.4% since the start of April. Ye ...