KMX vs Z Comparison

CarMax sells, finances, and services used and new cars through a chain of over 255 retail stores. It was formed in 1993 as a unit of Circuit City and spun off into an independent company in late 2002. Used-vehicle sales were 80% of fiscal 2026 revenue and wholesale about 17%, with the remaining portion composed of extended service plans and repair. In fiscal 2026, the company retailed and wholesaled 780,684 and 538,203 used vehicles, respectively. CarMax is the largest used-vehicle retailer in the US, but still estimates that it had only about 3.6% US market share of vehicles zero to 10 years old in calendar 2025. CarMax is based in Richmond, Virginia.

Zillow Group Inc is a real estate technology company offering a digital platform that connects real estate customers with sellers, agents, loan officers, and other real estate-related professionals. With its tools and resources, Zillow helps real estate professionals grow their businesses, and for renters and housing providers, it offers a marketplace along with a set of end-to-end products and services to streamline applications, leases, payments, and more. The group operates various brands such as Zillow, Zillow Home Loans, Zillow Rentals, Zillow New Construction, Trulia, StreetEasy, Out East, HotPads, Follow Up Boss, ShowingTime, dotloop, and Zillow Closing. Its ecosystem spans the entire home journey from shopping to renting, buying, selling, and financing real estate.