BIIB Stock Today: Biogen Hits New 52‑Week High After Novo Nordisk Alzheimer’s Trial Failure (Nov. 24, 2025)
Biogen Inc. (NASDAQ: BIIB) shares surged to fresh 52‑week highs on Monday, November 24, 2025, as investors reacted to a high‑profile Alzheimer’s drug failure at Novo Nordisk and a new immunology partnership with Dayra Therapeutics. By the closing bell, BIIB
