Biogen Inc. (BIIB)
BIIB · Health Care · 
United States
Biogen Inc. (BIIB) is a US company in the Health Care sector. The stock has its largest weight in XUHL (MSCI USA Health Care), at 0.55%. Anyone who holds an ETF containing Biogen also has an indirect stake in the company.
Data and Charts: Biogen
Key Data for Biogen
Biogen Stock Price Chart
The Biogen chart shows daily closing prices and is set to the current year by default. The stock is up 44.1% year to date and up 69.5% over twelve months. The last recorded close on October 30, 2026, was $253.62, at 100% of the 52-week range.
Price series from our database since Aug 12, 2024, 558 daily values.
Biogen Stock Performance
| Year to date | +44.1% | 1 year | +69.5% |
|---|---|---|---|
| 1 month | +12.3% | 3 months | +25.0% |
| Calendar year 2025 | +15.1% |
Measured in euros, Biogen is up 51.6% year to date and up 75.3% over twelve months. The difference from the dollar figures above comes from the exchange rate alone. Each daily price is converted at the ECB euro reference rate for that day.
Alysly Data Analysis: Biogen
What ETF Is Biogen In?
Biogen has very high ETF coverage and is held by 24 of the 104 ETFs we track, which together follow 12 indices. That puts the stock in more ETFs than 90.5% of the 4,341 stocks we track.
| ETF | Index | Weight | per €1,000 in the ETF |
|---|---|---|---|
| XUHL / XUHC | MSCI USA Health Care | 0.55% | €5.51 |
| SPFS | MSCI World Health Care | 0.41% | €4.11 |
| XDWH | MSCI World Health Care | 0.41% | €4.06 |
| XDEV | MSCI World Value | 0.23% | €2.31 |
| XDEW | S&P 500 Equal Weight | 0.23% | €2.31 |
| 2B7K | MSCI World SRI | 0.17% | €1.70 |
| WVAL | MSCI World Value | 0.17% | €1.66 |
| XDEM | MSCI World Momentum | 0.10% | €1.00 |
| SPYI / SPSA | MSCI ACWI IMI | 0.09% | €0.90 |
| SXR8 | S&P 500 | 0.06% | €0.60 |
| SPYL / SPY5 | S&P 500 | 0.06% | €0.58 |
| XD9U / XD9D | MSCI USA | 0.06% | €0.55 |
| SWWD | MSCI World | 0.05% | €0.47 |
| SPPW | MSCI World | 0.05% | €0.47 |
| EUNL | MSCI World | 0.04% | €0.40 |
| XDWD / XDWL | MSCI World | 0.04% | €0.40 |
| SPYY | MSCI ACWI | 0.04% | €0.36 |
| WIMI | MSCI World IMI | 0.04% | €0.36 |
| IUSQ | MSCI ACWI | 0.03% | €0.30 |
The last column shows how much of €1,000 in one of these funds goes to Biogen, based on each fund's latest holdings list.
US-listed ETFs holding Biogen (weight per latest SEC filing): ONEQ 0.07%, IVV 0.05%, SPY 0.05%, VOO 0.05%, VTI 0.04%. These funds are registered in the US; retail investors in the EU usually cannot buy them.
Biogen Weight in iShares Core MSCI World (EUNL) Since 2019
In iShares Core MSCI World (EUNL), Biogen had a weight of 0.11% on Sep 30, 2019 and 0.04% on Oct 30, 2026. The fund tracks the MSCI World. Its share peaked at 0.16% on Mar 31, 2020. The weight rises and falls with the stock's price performance relative to the other index members. It can also change when the index provider adjusts the index composition.
What's Inside Your ETF Portfolio and the ETF overlap check show how much Biogen overlaps with the rest of a portfolio.
Stocks With ETF Exposure Similar to Biogen
| Stock | Shared ETFs | r | 1 year | Annualized volatility | Net margin | Revenue growth |
|---|---|---|---|---|---|---|
| Biogen | – | – | +69.5% | 32.1% | 13.1% | +2.2% |
| Centene Corporation | 24 | – | +95.5% | 50.4% | -3.4% | +19.4% |
 Zimmer Biomet Holdings | 23 | – | -5.1% | 29.5% | 8.6% | +7.2% |
 CVS Health Corporation | 23 | – | +17.7% | 33.6% | 0.4% | +7.8% |
 Cigna Group | 23 | – | +20.7% | 30.5% | 2.2% | +11.2% |
 Elevance Health | 23 | – | +30.5% | 34.7% | 2.8% | +12.5% |
 Humana | 22 | – | +45.1% | 46.1% | 0.9% | +10.1% |
 Labcorp Holdings | 22 | – | +43.2% | 23.7% | 6.3% | +7.2% |
 West Pharmaceutical Services | 22 | – | +48.1% | 45.4% | 16.1% | +6.3% |
These stocks reach a portfolio through largely the same funds as Biogen. “Shared ETFs” counts the funds that hold both.
Return and volatility are calculated from our daily closing prices in US dollars. Margin and growth come from each company's latest SEC annual filing. Because fiscal years do not end on the same date for every company, the underlying periods are not fully identical.
Fundamental Analysis: Biogen
Biogen Key Financials
Figures come from the SEC annual filing for the latest reported fiscal year (period end Dec 31, 2025).
| Fiscal year | Revenue | Net income | Margin |
|---|---|---|---|
| FY ended Dec 2023 | 9.8 | 1.2 | 11.8% |
| FY ended Dec 2024 | 9.7 | 1.6 | 16.9% |
| FY ended Dec 2025 | 9.9 | 1.3 | 13.1% |
Technical Analysis: Biogen
Biogen Risk Metrics
The close on Oct 30, 2026, was 0.1% below the highest close since Aug 12, 2024. That high was reached on Oct 22, 2026. When the S&P 500 rose or fell 1%, Biogen moved 0.24% on average in the same direction (past 252 trading days). The correlation of 0.09, however, shows only a moderate link to the broad market. Accordingly, moves in the S&P 500 explain only a small part of the daily price moves of Biogen.
What Biogen Correlates With
| Instrument | r | −1 … +1 |
|---|---|---|
| Bristol-Myers Squibb Company | +0.63 | |
| AbbVie Inc. | +0.61 | |
| Pfizer Inc. | +0.61 | |
| STERIS plc | +0.61 | |
| Royalty Pharma Plc Class A | +0.57 | |
| Amgen Inc. | +0.54 | |
| Nikkei 225 | -0.38 | |
| Monolithic Power Systems Inc. | -0.38 | |
| nVent Electric plc | -0.38 |
The strongest co-movers are listed at the top, the strongest inverse movers at the bottom. Low or negative correlations can help spread risk more broadly across a portfolio.
