Which PBM is best?
Which PBM is best?
Three Major Players Control Nearly 80% of Total PBM Market Share by Total Adjusted Claims. CVS Caremark leads in PBM market share, representing 34% of total adjusted claims in 2020, followed by Express Scripts (24%), and OptumRx (21%). Together, these three PBMs control about 79% of the total PBM market share.
