DGX vs QSR Comparison

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.

Restaurant Brands International is one of the largest restaurant companies in the world, with approximately USD 44 billion in 2024 systemwide sales across a footprint that spanned more than 32,000 restaurants and more than 100 countries. The firm generates revenue primarily from retail sales at its company-owned restaurants, royalty fees and lease income from franchised stores, and from its Tim Hortons supply chain operations. Formed in 2014 after 3G Capital's acquisition of Tim Hortons International, the RBI portfolio is split among Burger King (7,082 units), Tim Hortons (4,539 units), Popeyes Louisiana Kitchen (3,520 units), Firehouse Subs (1,345 units), and international franchise units of those banners (15,639) as of year-end 2024.