COR vs CI Comparison

Cencora is one of three leading domestic pharmaceutical wholesalers. It sources and distributes branded, generic, and specialty pharmaceutical products to pharmacies (retail chains, independent, and mail order), hospital networks, and healthcare providers. It and McKesson and Cardinal Health hold over 90% share of the US pharmaceutical wholesale industry. Cencora also provides commercialization services for manufacturers of pharmaceuticals and medical devices, global specialty drug logistics (World Courier), and animal health product distribution (MWI Animal Health). Cencora expanded its international presence in 2021 by purchasing Alliance Healthcare, one of the leading drug wholesalers in Europe.

Cigna primarily provides pharmacy benefit management and health insurance services. Its PBM and specialty pharmacy services, which were greatly expanded by its 2018 merger with Express Scripts, are mostly sold to health insurance plans and employers. Its largest PBM contract is with the Department of Defense, and it recently won a multiyear deal with top-tier insurer Centene. In health insurance and other benefits, Cigna primarily serves employers through self-funding arrangements, and the company operates mostly in the US with 16 million US and 2 million international medical members covered as of December 2025.