BIIB vs VXZ: Correlation
How closely do Biogen (BIIB) and iPath Series B S&P 500 VIX Mid-Term Futures ETN (VXZ) trade together? Their weekly returns over three years give a correlation of -0.25, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BIIB and VXZ?
Over the past 3 years, BIIB and VXZ moved with a correlation of -0.25, which is negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at -0.07 versus -0.25 over 3 years. Over 5 years the correlation is -0.25, and the annualized covariance of weekly returns is -193.7 %².
Out of 32 assets tracked against BIIB, VXZ lands near the bottom at #31. Correlation aside, the last 12 months split them widely, with BIIB ahead by 78.5 points (+62.4% versus -16.1%).
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
BIIB vs VXZ: side by side
| BIIB (Biogen) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | +62.4% | -16.1% |
| 5-year return | -35.7% | -53.1% |
| Volatility (ann.) | 30.1% | 25.6% |
| Beta vs S&P 500 | 0.53 | -1.31 |
| Max drawdown (3Y) | -57.7% | -36.4% |
| Market cap | $32.7B | – |
| P/E (trailing) | 39.2 | – |
| Dividend yield | 0.00% | – |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | BIIB | VXZ |
|---|---|---|
| 2022 | +15.4% | +0.5% |
| 2023 | -6.6% | -44.0% |
| 2024 | -40.9% | -12.7% |
| 2025 | +15.1% | +5.7% |
| 2026 | +25.9% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BIIB and VXZ good diversifiers for each other?
Yes. With a correlation of -0.25, BIIB and VXZ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between BIIB and VXZ?
Using weekly returns as of 2026-08-27: -0.25 over 3 years, with -0.07 over the last year and -0.25 over 5 years.
Is VXZ a good diversifier for BIIB?
Yes. With a correlation of -0.25, BIIB and VXZ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.25 mean?
On the −1 to +1 scale, -0.25 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/biib-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/biib-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BIIB correlations · VXZ correlations
