Why Biogen Stock Is Tanking Today

Why Biogen Stock Is Tanking Today

Source: 
Motley Fool
snippet: 

Biotech heavyweight Biogen (NASDAQ:BIIB) saw its shares sink by as much as 32% in pre-market trading Monday. The biotech's stock is under serious pressure today following a negative advisory committee vote for its experimental Alzheimer's disease drug aducanumab last Friday.