KMX vs ACA Comparison

CarMax sells, finances, and services used and new cars through a chain of over about 260 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.

Arcosa Inc is a manufacturer and producer of infrastructure-related products and solutions in the U.S. It operates in three segments: Construction Products, Engineered Structures, and Transportation Products. Maximum revenue is generated from the Construction Products segment, which produces aggregates, specialty materials, asphalt, and construction support gear. The Engineered Structures segment mainly manufactures and sells steel and concrete structures for infrastructure businesses, including utility structures for electricity transmission and distribution, structural wind towers, traffic and lighting structures, and telecommunication structures; and the Transportation Products segment builds inland barges, fiberglass covers, winches, marine hardware, and other industrial equipment.