News and Reports | July 16, 2026
Caremark, Express Scripts and OptumRx control roughly 80% of prescriptions filled in the United States, according to Patients for Affordable Drugs. Merith Basey, CEO of Patients for Affordable Drugs, said, “We welcome today’s settlement curbing the power of PBM giants Caremark, Express Scripts and OptumRx who control the vast majority of America’s prescriptions.”