GPC vs DGX Comparison

Genuine Parts sells aftermarket automotive parts (60% of sales) and industrial products (40% of sales) in the United States and internationally. The automotive segment primarily acts as a distributor to its network of 9,800 global retail locations, of which about two-thirds are independently owned and operated. We estimate Genuine serves around 6,000 retail locations in the US operating under the Napa Auto Parts brand, with about 80% of end-market sales derived from professional customers. Its industrial segment, primarily operating under the Motion name in the United States, is a leading distributor of bearings, power transmission, and other industrial products to more than 200,000 maintenance, repair, and original equipment manufacturer customers.

Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 95% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,300 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.