Biogen (NASDAQ:BIIB) has outperformed the market over the past 20 years by 2.08% on an annualized basis producing an average annual return of 9.48%. Currently, Biogen has a market capitalization of $36.66 billion. Buying $1000 In BIIB: If an investor had bought $1000 of BIIB stock 20 years ago, it would be worth $6,114.80 today based on a price of $253.02 for BIIB at the time of writing. Biogen’s Performance Over Last 20 YearsFinally — what’s the point of all this? The key insight to take from this article is to note how much of a difference compounded returns can make in your cash growth ove…