IBB vs VYGR: Correlation
Measured on weekly returns over the past three years, iShares Biotechnology ETF (IBB) and Voyager Therapeutics, Inc. (VYGR) carry a correlation of 0.58, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IBB and VYGR?
Across a 3-year window, the weekly returns of IBB and VYGR correlate at 0.58, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.40 versus 0.58 over 3 years. Stretching to 5 years gives 0.32, with an annualized covariance of 728.9 %².
Among the 168 assets we track against IBB, VYGR ranks #48 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months IBB outperformed by 54.2 percentage points (+55.4% for IBB against +1.2% for VYGR). Note the risk asymmetry: VYGR runs 2.9 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
IBB vs VYGR: side by side
| IBB (iShares Biotechnology ETF) | VYGR (Voyager Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | +55.4% | +1.2% |
| 5-year return | +26.6% | +7.5% |
| Volatility (ann.) | 20.7% | 60.2% |
| Beta vs S&P 500 | 0.81 | 1.35 |
| Max drawdown (3Y) | -24.9% | -74.8% |
| Market cap | – | $0.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.22% | 0.00% |
| Expense ratio | 0.44% | – |
| Assets under management | $9.2B | – |
| Sector / category | ETF · Thematic | US Listed |
IBB, iShares's Health fund, carries $9.2B under management, 235 holdings, a 0.44% expense ratio, a 0.22% trailing dividend yield.
Year-by-year returns
| Year | IBB | VYGR |
|---|---|---|
| 2022 | -13.7% | +125.1% |
| 2023 | +3.8% | +38.4% |
| 2024 | -2.4% | -32.8% |
| 2025 | +28.0% | -30.7% |
| 2026 | +27.4% | -12.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IBB and VYGR good diversifiers for each other?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between IBB and VYGR?
The IBB/VYGR correlation stands at 0.58 on a 3-year window (1 year: 0.40, 5 years: 0.32), computed from weekly returns as of 2026-08-27.
Is VYGR a good diversifier for IBB?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.58 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
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Related comparisons
Hubs: IBB correlations · VYGR correlations
