CarMax is a U.S. used-vehicle retailer built around a no-haggle, customer-controlled buying and selling process. The company sells used cars through a nationwide network of stores and digital channels, and it also buys vehicles from consumers and other sources to replenish inventory. In addition to retailing vehicles, CarMax operates a wholesale auction business and a captive finance arm, CarMax Auto Finance, which finances a large share of its retail sales and services the resulting loan portfolio. The company’s model is designed to combine inventory sourcing, retail sales, financing, and after-sale services within one omni-channel platform.