About Biogen Inc. (BIIB)
Biogen Inc. is a Drug Manufacturers - General company operating in the Healthcare sector.
BIIB trades on the US stock exchanges (NYSE/NASDAQ) and is classified as a large-cap stock .
Key Statistics
- Current Price
- $253.62
- Market Cap
- $37.49B
- 52-Week High
- $258.78
- 52-Week Low
- $148.51
- Sector
- Healthcare
- Industry
- Drug Manufacturers - General
$1,000 Invested in Biogen Inc. (BIIB)
How much would $1,000 invested in BIIB be worth today?
What would $1,000 invested in BIIB 1 year ago be worth today?
A $1,000 investment in Biogen Inc. (BIIB) in 2025 would be worth $1,695 as of November 2026, representing a +69.5% total return.
What would $1,000 invested in BIIB 3 years ago be worth today?
A $1,000 investment in Biogen Inc. (BIIB) in 2023 would be worth $1,052 as of November 2026, representing a +5.2% total return.
What would $1,000 invested in BIIB 5 years ago be worth today?
A $1,000 investment in Biogen Inc. (BIIB) in 2021 would be worth $940 as of November 2026, representing a -6.0% total return.
What would $1,000 invested in BIIB 10 years ago be worth today?
A $1,000 investment in Biogen Inc. (BIIB) in 2016 would be worth $873 as of November 2026, representing a -12.7% total return.
What would $1,000 invested in BIIB at IPO be worth today?
A $1,000 investment in Biogen Inc. (BIIB) at IPO would be worth $81,158 as of November 2026, representing a +8015.8% total return.
Monthly Returns Heatmap
Over the past 35+ years (421 months), Biogen Inc. (BIIB) has averaged a monthly return of +2.06% with a median return of +1.00%. The stock had 221 positive months (52%) and 196 negative months (47%). The best month in BIIB's history was June 2000 with a +83.8% return, while the worst was February 2005 at -40.5%. Historically, October tends to be the strongest month (averaging +6.1%), and March the weakest (-2.4%).
BIIB's longest winning streak was 10 consecutive months of gains, while its longest losing streak was 10 consecutive months of losses. The best full year was 1995 with a cumulative return of +255.9%, and the worst was 1994 at -78.2%.
Annual Returns
Over 35 years of trading history, Biogen Inc. (BIIB) has delivered an average annual return of +42.01% with a median return of +12.32%. The compound annual growth rate (CAGR) is +14.57%. The stock posted gains in 21 years (60%) and losses in 14 years (40%).
BIIB's best year was 1995 with a +817.65% gain, while the worst was 1994 at -63.04%. The longest streak of consecutive positive years was 7, and the longest losing streak was 4 years. BIIB achieved double-digit gains (10%+) in 19 years. It suffered double-digit losses in 8 years.
| Year | Return | Start | End |
|---|---|---|---|
| 2026 | +44.11% | $175.99 | $253.62 |
| 2025 | +15.09% | $152.92 | $175.99 |
| 2024 | -40.91% | $258.77 | $152.92 |
| 2023 | -6.55% | $276.92 | $258.77 |
| 2022 | +15.42% | $239.92 | $276.92 |
| 2021 | -2.02% | $244.86 | $239.92 |
| 2020 | -17.48% | $296.73 | $244.86 |
| 2019 | -1.39% | $300.92 | $296.73 |
| 2018 | -5.54% | $318.57 | $300.92 |
| 2017 | +12.34% | $283.58 | $318.57 |
| 2016 | -7.43% | $306.35 | $283.58 |
| 2015 | -9.75% | $339.45 | $306.35 |
| 2014 | +21.42% | $279.57 | $339.45 |
| 2013 | +91.00% | $146.37 | $279.57 |
| 2012 | +33.00% | $110.05 | $146.37 |
| 2011 | +64.13% | $67.05 | $110.05 |
| 2010 | +25.33% | $53.50 | $67.05 |
| 2009 | +12.32% | $47.63 | $53.50 |
| 2008 | -16.32% | $56.92 | $47.63 |
| 2007 | +15.71% | $49.19 | $56.92 |
| 2006 | +8.64% | $45.28 | $49.19 |
| 2005 | -32.02% | $66.61 | $45.28 |
| 2004 | +81.50% | $36.70 | $66.61 |
| 2003 | +10.64% | $33.17 | $36.70 |
| 2002 | -51.88% | $68.93 | $33.17 |
| 2001 | +9.09% | $63.19 | $68.93 |
| 2000 | +92.94% | $32.75 | $63.19 |
| 1999 | +318.09% | $7.83 | $32.75 |
| 1998 | +36.73% | $5.73 | $7.83 |
| 1997 | +44.74% | $3.96 | $5.73 |
| 1996 | +21.79% | $3.25 | $3.96 |
| 1995 | +817.65% | $0.35 | $3.25 |
| 1994 | -63.04% | $0.96 | $0.35 |
| 1993 | -34.29% | $1.46 | $0.96 |
| 1992 | -32.69% | $2.17 | $1.46 |
Frequently Asked Questions: BIIB
What sector is BIIB in? ▼
BIIB operates in the Healthcare sector, specifically in the Drug Manufacturers - General industry. This sector includes pharmaceutical companies, biotechnology firms, medical device manufacturers, and healthcare providers.
How has BIIB performed historically? ▼
Over 35 years of trading history, BIIB has posted gains in 21 years (60% of the time). The best year was 1995 with a +817.6% return. Past performance does not guarantee future results.
How can I invest in BIIB? ▼
You can invest in BIIB through any brokerage account that offers access to US stock exchanges. Popular options include commission-free brokers like Fidelity, Charles Schwab, or Robinhood (US), or international brokers like Interactive Brokers. You can buy individual shares or invest through ETFs that hold BIIB.
Last updated: 11/1/2026