Why Biogen, Lilly, and Prothena Stocks Are Skyrocketing Today

Why Biogen, Lilly, and Prothena Stocks Are Skyrocketing Today

Shares of Biogen (NASDAQ: BIIB) were skyrocketing 36% as of 11:10 a.m. ET on Wednesday. The huge gain came after the company and its partner Eisai (OTC: ESALY) announced positive results on Tuesday from their late-stage Clarity AD study evaluating lecanemab in treating Alzheimer's disease. The news also propelled two stocks of other drugmakers developing Alzheimer's disease drugs significantly higher.