CarMax Inc is a leading retailer of used cars and related services in the United States. They operate a network of automotive dealerships that offer a wide selection of pre-owned vehicles, as well as financing options, vehicle appraisals, and extended warranties. With a customer-centric approach and a commitment to transparency, CarMax Inc aims to provide a hassle-free car buying experience for their customers.

In terms of technical analysis, the stock of CarMax Inc is currently building a base. This indicates that the stock price has been consolidating and forming a solid foundation for potential future upward movement. Building a base typically requires more time as the stock price establishes support and resistance levels. 

Traders and investors may view this base-building phase as a period of indecision and may wait for further confirmation before making trading decisions. Monitoring the stock's price action and volume can provide insights into the strength of the base and potential future price movements.