All charts and data below are CPI-U inflation-adjusted and with dividends reinvested. (Why?)

Total Real Returns

BIIB: Total Real Return Chart (Dividends Reinvested, Inflation Adjusted)

Tue 1991-09-17? to Tue 2025-10-21 YTD
Return
TRR
Price
BIIB
×
−7.23%
2025-10-21
19.7 TRR
2025-10-21
Biogen Inc NASDAQ Common Stock

Returns

Tue 1991-09-17? to Tue 2025-10-21 Overall
Return
Exponential
Trendline
BIIB
×
+1,869.82%
+9.14%/yr
+16.12%/yr
(R2=0.743)
Biogen Inc NASDAQ Common Stock

Growth of $10,000

Tue 1991-09-17? to Tue 2025-10-21 Start
Value
End
Value
BIIB
×
$10,000.00
1991-09-17
$196,982.35
2025-10-21
Biogen Inc NASDAQ Common Stock

Annual Returns

Year BIIB
2025 (YTD) −7.23%
2024 −42.56%
2023 −9.58%
2022 +8.41%
2021 −8.46%
2020 −18.59%
2019 −3.60%
2018 −7.31%
2017 +10.01%
2016 −9.31%
2015 −10.41%
2014 +20.51%
2013 +88.17%
2012 +30.74%
2011 +59.39%
2010 +23.48%
2009 +9.35%
2008 −16.39%
2007 +11.16%
2006 +5.97%
2005 −34.28%
2004 +75.79%
2003 +8.60%
2002 −53.00%
2001 +7.42%
2000 +86.60%
1999 +307.07%
1998 +34.63%
1997 +42.28%
1996 +17.87%
1995 +794.88%
1994 −64.00%
1993 −36.05%
1992 −34.59%
1991 −31.15%

Drawdowns

Tue 1991-09-17? to Tue 2025-10-21 Current
Drawdown
Worst
Drawdown
BIIB
×
−77.75% −90.83%
1994-12-16
Biogen Inc NASDAQ Common Stock