If you invested in
A $1,000 investment in Biogen Inc. (BIIB) in January 2016 would be worth $720 as of June 2026 with dividends reinvested — -3.1% a year. Use the dropdowns above to try any amount, ticker, or starting month back to September 1991.
Over the same period, the same $1,000 would be worth $4,557 in the S&P 500 (SPY) and $7,667 in the Nasdaq-100 (QQQ). BIIB trailed both the S&P 500 and the Nasdaq-100 over that period.
Growth of $1,000 in BIIB since January 2016#
monthlyBiogen Inc. (BIIB). Total return approximated via dividend- and split-adjusted closes (no taxes or fees). Not investment advice.
Growth of $1,000 in BIIB by starting month#
$1,000 invested in BIIB, by starting year#
| Invested in | Worth today | Same in QQQ | Multiple | Annualized |
|---|---|---|---|---|
| 2016 | $720 | $7,667 | 0.7× | -3.1% |
| 2017 | $709 | $6,338 | 0.7× | -3.6% |
| 2018 | $565 | $4,619 | 0.6× | -6.6% |
| 2019 | $589 | $4,614 | 0.6× | -6.9% |
| 2020 | $731 | $3,513 | 0.7× | -4.8% |
| 2021 | $696 | $2,429 | 0.7× | -6.5% |
| 2022 | $870 | $2,095 | 0.9× | -3.1% |
| 2023 | $676 | $2,562 | 0.7× | -11.0% |
| 2024 | $797 | $1,798 | 0.8× | -9.1% |
| 2025 | $1,366 | $1,427 | 1.4× | 25.4% |
Methodology#
Investments are assumed made at the first trading day's close of the chosen year. "Dividends reinvested" uses split- and dividend-adjusted closes (a standard total-return approximation; taxes and fees excluded). "Price-only" uses split-adjusted closes. BIIB data begins September 1991; values as of June 2026 and refresh daily. Past performance does not predict future returns; not investment advice.
See the live BIIB chart and fundamentals on the BIIB quote page or compare with the same investment in SPY.
FAQ
- How much would $1,000 invested in BIIB be worth today?
- A $1,000 investment in Biogen Inc. (BIIB) in January 2016 would be worth about $720 as of June 2026, with dividends reinvested. That works out to about -3.1% a year.
- How far back does the BIIB calculation go?
- BIIB data begins September 1991. You can pick any starting month from then to the present and see what your investment would be worth today.
- Does this include dividends?
- Yes. The default "dividends reinvested" view uses split- and dividend-adjusted closing prices — a standard total-return approximation that excludes taxes and fees. A price-only view (split-adjusted, no dividends) is also available.
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