If you'd invested in Biogen (BIIB): performance and returns
Looking for Biogen's share price history and how much the stock has returned? Here's its year-by-year performance and what $1,000 invested at different dates would be worth today.
💰 Calculator: how much would Biogen have returned?
This calculator shows how much Biogen stock would have returned based on the amount invested and the starting year. Pick a sum and a year and you'll instantly see what it would be worth today and the total gain. Real prices, excluding dividends.
If I'd invested $1,000 in Biogen
| Investment | Worth today | Gain |
|---|---|---|
| 1 years ago | $1,413 | +41% |
| 3 years ago | $780 | -22% |
| 5 years ago | $882 | -12% |
| 10 years ago | $705 | -29% |
| since inception (1991) | $70,074 | +6907% |
Return by year (Biogen)
| Year | Return | $1,000 invested at year start |
|---|---|---|
| 2026 (YTD) | +23% | $1,228 (+23%) |
| 2025 | +15% | $1,413 (+41%) |
| 2024 | -41% | $835 (-17%) |
| 2023 | -7% | $780 (-22%) |
| 2022 | +15% | $901 (-10%) |
| 2021 | -2% | $882 (-12%) |
| 2020 | -17% | $728 (-27%) |
| 2019 | -1% | $718 (-28%) |
| 2018 | -6% | $678 (-32%) |
| 2017 | +12% | $762 (-24%) |
| 2016 | -7% | $705 (-29%) |
Frequently asked questions
How much does BIIB return?
$1,000 invested in Biogen 10 years ago would be worth $705 today, i.e. -3%/yr on average (price, excluding dividends).
What was BIIB's best/worst year?
Best year: 2022 (+15%). Worst year: 2024 (-41%). Year-by-year detail is above.
How much would $1,000 invested in BIIB since inception be worth?
Since 1991, $1,000 would have become $70,074 (+6907%). Past performance is not a guarantee.
Do Biogen's returns include dividends?
No — these returns are price-only. If Biogen pays a dividend, its total return would be somewhat higher — see its dividend page.
What is Biogen's average annual return (ROI)?
Biogen's return on investment is about -3%/yr over 10 years (price, excluding dividends), versus the S&P 500's ~10%/yr over the long run.