Biogen - 34 Year Stock Price History | BIIB

The latest closing stock price for Biogen as of April 14, 2025 is 119.26.

  • An investor who bought $1,000 worth of Biogen stock at the IPO in 1991 would have $37,163 today, roughly 37 times their original investment - a 11.31% compound annual growth rate over 34 years.
  • The all-time high Biogen stock closing price was 475.98 on March 20, 2015.
  • The Biogen 52-week high stock price is 238.00, which is 99.6% above the current share price.
  • The Biogen 52-week low stock price is 110.04, which is 7.7% below the current share price.
  • The average Biogen stock price for the last 52 weeks is 181.63.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Biogen - 34 Year Stock Price History | BIIB

  • An investor who bought $1,000 worth of Biogen stock at the IPO in 1991 would have $37,163 today, roughly 37 times their original investment - a 11.31% compound annual growth rate over 34 years.
  • The all-time high Biogen stock closing price was 475.98 on March 20, 2015.
  • The Biogen 52-week high stock price is 238.00, which is 99.6% above the current share price.
  • The Biogen 52-week low stock price is 110.04, which is 7.7% below the current share price.
  • The average Biogen stock price for the last 52 weeks is 181.63.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.