Just how much Medicare price negotiations will negatively impact Novo Nordisk, though, depends on what the final negotiated prices for Ozempic, Wegovy, and Rybelsus will be. In Medicare's negotiations for 2026, the new prices achieved an average of 22% savings.

Stock prices for Novo Nordisk fell by about 3% at market open after the Biden administration selected its revolutionary drugs for mandatory price negotiations.

Novo Nordisk's blockbuster diabetes drug Ozempic and weight-loss treatment Wegovy are among the 15 drugs targeted for Medicare price negotiations for 2027, the U.S. government said on Friday. Other drugs on the list include Pfizer's cancer drugs Ibrance and Xtandi,