Express Scripts looks to limit drug price increases By: CNBC.com News October 07, 2015 at 10:49 AM EDT Express Scripts, the largest pharmacy benefits manager in the U.S., says it's got a plan to fight drug price increases: Refuse to pay. Read More >> Related Stocks: Amgen Biogen Idec Express Scripts Holding Regeneron Pharmaceuticals Sanofi-Aventis S.A. ADR