Biogen Inc. (BIIB)
 NASDAQ: BIIB · Real-Time Price · USD
 154.27
 +4.66 (3.11%)
  At close: Oct 31, 2025, 4:00 PM EDT
152.77
 -1.50 (-0.97%)
  After-hours: Oct 31, 2025, 5:55 PM EDT
Source: Business metrics provided by Main Street Data and sourced from official company press releases and documents.