DGX vs FCNCA Comparison

Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 97% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,400 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.

First Citizens is a US regional bank with total assets of around $236 billion as of March 31, 2026. Headquartered in Raleigh, North Carolina, First Citizens' largest markets are North Carolina, South Carolina, and California. The bank has a track record of acquiring troubled banks from the FDIC, such as Silicon Valley Bridge Bank in 2023, which doubled its asset base. First Citizens offers products and services across retail, commercial, wealth management, and railcar leasing. First Citizens derived over 95% of its earnings from banking and less than 5% from railcar leasing in 2025.