Why Biogen's Stock Isn't Soaring Since Its Alzheimer's Drug Got Approval

Why Biogen's Stock Isn't Soaring Since Its Alzheimer's Drug Got Approval

Source: 
Motley Fool
snippet: 
  • Biogen investors have been here before: an Alzherimer's treatment that obtains authorization but still isn't fully approved.
  • Investors are more cautious this time around, as is clear from the lack of upward movement in the stock's share price.
  • Declining revenue means Biogen needs a big catalyst to get its shares moving.