In the wake of Biogen Inc.'s (NASDAQ:BIIB) latest US$1.4b market cap drop, institutional owners may be forced to take severe actions - Simply Wall St News
Biogen (BIIB) $18 Billion Plunge May Have Hurt These Hedge Funds - Bloomberg
Is Biogen Inc (BIIB) Set to Underperform? Analyzing the Factors
Biogen 2019 Outlook (NASDAQ:BIIB) | Seeking Alpha
Biogen Inc. (BIIB Stock) Breaks Out, Will BIIB Reach $300?