If you invested in in
A $1,000 investment in Biogen Inc. (BIIB) in January 2016 would be worth $732 as of June 2026 with dividends reinvested — -3.0% a year. Use the dropdowns above to try any amount, ticker, or starting month back to September 1991.
Growth of $1,000 in BIIB since January 2016
dividends reinvested · monthlyBiogen Inc. (BIIB). Total return approximated via dividend- and split-adjusted closes (dividends reinvested, no taxes or fees). Not investment advice.
$1,000 invested in BIIB, by starting year
| Invested in | Worth today (div. reinvested) | Price-only | Multiple | Annualized |
|---|---|---|---|---|
| 1991 | $63,987 | $63,987 | 64.0× | 12.7% |
| 1992 | $77,405 | $77,405 | 77.4× | 13.5% |
| 1993 | $171,389 | $171,389 | 171× | 16.7% |
| 1994 | $184,584 | $184,584 | 185× | 17.5% |
| 1995 | $468,181 | $468,181 | 468× | 21.7% |
| 1996 | $55,803 | $55,803 | 55.8× | 14.2% |
| 1997 | $51,603 | $51,603 | 51.6× | 14.4% |
| 1998 | $28,737 | $28,737 | 28.7× | 12.6% |
| 1999 | $23,758 | $23,758 | 23.8× | 12.3% |
| 2000 | $4,754 | $4,754 | 4.8× | 6.1% |
| 2001 | $3,400 | $3,400 | 3.4× | 4.9% |
| 2002 | $3,363 | $3,363 | 3.4× | 5.1% |
| 2003 | $6,233 | $6,233 | 6.2× | 8.1% |
| 2004 | $4,652 | $4,652 | 4.7× | 7.1% |
| 2005 | $3,078 | $3,078 | 3.1× | 5.4% |
| 2006 | $4,468 | $4,468 | 4.5× | 7.6% |
| 2007 | $4,137 | $4,137 | 4.1× | 7.6% |
| 2008 | $3,281 | $3,281 | 3.3× | 6.7% |
| 2009 | $4,110 | $4,110 | 4.1× | 8.5% |
| 2010 | $3,721 | $3,721 | 3.7× | 8.4% |
| 2011 | $3,054 | $3,054 | 3.1× | 7.5% |
| 2012 | $1,695 | $1,695 | 1.7× | 3.7% |
| 2013 | $1,281 | $1,281 | 1.3× | 1.9% |
| 2014 | $640 | $640 | 0.6× | -3.6% |
| 2015 | $514 | $514 | 0.5× | -5.7% |
| 2016 | $732 | $732 | 0.7× | -3.0% |
| 2017 | $721 | $721 | 0.7× | -3.4% |
| 2018 | $575 | $575 | 0.6× | -6.4% |
| 2019 | $599 | $599 | 0.6× | -6.7% |
| 2020 | $744 | $744 | 0.7× | -4.5% |
| 2021 | $708 | $708 | 0.7× | -6.2% |
| 2022 | $885 | $885 | 0.9× | -2.8% |
| 2023 | $687 | $687 | 0.7× | -10.6% |
| 2024 | $811 | $811 | 0.8× | -8.5% |
| 2025 | $1,389 | $1,389 | 1.4× | 27.4% |
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.