BIIB Biogen Inc.
NASDAQActiveCommon stock
BIIB is the ticker symbol of Biogen Inc., which is listed on NASDAQ. The symbol was previously used by Biogen Idec Inc..
BIIB at a glance
- Symbol
- BIIB
- Company / issuer
- Biogen Inc.
- Security type
- Common stock
- Exchange
- NASDAQ
- Status
- Actively traded
- Seen in listing files
- Jan 2015 – present
- Sector
- Health Care
- Industry
- Biotechnology: Biological Products (No Diagnostic Substances)
- Country
- United States
- Market cap
- $33.4 billion (Sep 2026)
BIIB ticker history
All companies and securities we have recorded under the symbol BIIB, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Biogen Idec Inc. | — | Jan 2015 | Jan 2015 |
| Biogen Inc. | Common Stock | Aug 2018 | present |
Biogen Inc. company profile
- Industry (SIC)
- Biological Products, (No Diagnostic Substances)
- Headquarters
- Cambridge, MA
- Incorporated in
- DE
- Fiscal year end
- December 31
- SEC filer category
- Large accelerated filer
- Latest annual report
- 10-K filed 2026-02-06
- Latest interim report
- 10-Q filed 2026-07-29
- SEC CIK
- 875045
Former company names
- Biogen Idec Inc. (until 2015)
- Biogen Idec Inc (until 2007)
- Idec Pharmaceuticals Corp / De (until 2003)
- Idec Pharmaceuticals Corp / Ca (until 1997)
Source: SEC EDGAR filer data.
BIIB price chart
Interactive chart provided by TradingView (loads third-party scripts).
Frequently asked questions
What company has the ticker symbol BIIB?
BIIB is the ticker symbol of Biogen Inc on NASDAQ.
Is BIIB still trading?
Yes. BIIB appears in the current NASDAQ listings as of Sep 2026.
Which companies have used the ticker BIIB?
Our listing records show BIIB used by: Biogen Idec Inc.; Biogen Inc..
Which exchange is BIIB listed on?
BIIB is listed on NASDAQ.
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