All charts and data below are with dividends reinvested. (Inflation adjustment is OFF !)
BIIB total return snapshot: BIIB returned +45.89% over the past year and +23.39% YTD, with dividends reinvested. Since Sep. 17, 1991, BIIB is up +6,848.80% in nominal total return, or +12.89%/yr, and is currently −54.38% below its total-return high on Mar. 20, 2015.
Data ending Fri Sep. 11, 2026
| Tue 1991-09-17💬 to Fri 2026-09-11 |
Overall
Return |
Exponential
Trendline |
||||
|---|---|---|---|---|---|---|
| BIIB × |
+6,848.80%
+12.89%/yr |
+18.05%/yr
R2=0.782 |
||||
| Biogen Inc NASDAQ Common Stock | ||||||
| Tue 1991-09-17💬 to Fri 2026-09-11 |
Start
Value |
End
Value |
|---|---|---|
| BIIB × |
$10,000.00
1991-09-17 |
$694,880.00
2026-09-11 |
| YTD | YoY | |
|---|---|---|
| BIIB × | +23.39% | +45.89% |
|
Current
Drawdown |
Worst
Drawdown |
|
|---|---|---|
| BIIB × |
−54.38%
on 2026-09-11 from 2015-03-20 peak |
−90.00%
on 1994-12-16 from 1991-10-16 peak |
| Period ending Fri 2026-09-11 | 1 yr | 2 yr | 3 yr | 5 yr | 10 yr |
|---|---|---|---|---|---|
| BIIB × | +45.89% |
+9.07% +4.44%/yr |
−16.13% −5.70%/yr |
−27.57% −6.25%/yr |
−26.66% −3.05%/yr |
| Year | BIIB |
|---|---|
| 2026 (YTD) | +23.39% |
| 2025 | +15.09% |
| 2024 | −40.91% |
| 2023 | −6.55% |
| 2022 | +15.42% |
| 2021 | −2.02% |
| 2020 | −17.48% |
| 2019 | −1.39% |
| 2018 | −5.54% |
| 2017 | +12.34% |
| 2016 | −7.43% |
| 2015 | −9.75% |
| 2014 | +21.42% |
| 2013 | +91.00% |
| 2012 | +33.00% |
| 2011 | +64.13% |
| 2010 | +25.33% |
| 2009 | +12.32% |
| 2008 | −16.32% |
| 2007 | +15.71% |
| 2006 | +8.64% |
| 2005 | −32.02% |
| 2004 | +81.50% |
| 2003 | +10.64% |
| 2002 | −51.88% |
| 2001 | +9.09% |
| 2000 | +92.94% |
| 1999 | +318.09% |
| 1998 | +36.73% |
| 1997 | +44.74% |
| 1996 | +21.79% |
| 1995 | +817.56% |
| 1994 | −63.04% |
| 1993 | −34.29% |
| 1992 | −32.69% |
| 1991 | −30.67% |
