PCG vs VIR: Correlation
Measured on weekly returns over the past three years, PG&E Corporation (PCG) and Vir Biotechnology, Inc. (VIR) carry a correlation of -0.22, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PCG and VIR?
Across a 3-year window, the weekly returns of PCG and VIR correlate at -0.22, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.11) runs above the 3-year figure (-0.22). Stretching to 5 years gives -0.05, with an annualized covariance of -365.9 %².
Within PCG's tracked universe of 30 assets, VIR comes in at #18 by 3-year correlation. The last year tells two different stories: VIR led by 96.0 percentage points, +20.3% for PCG against +116.3% for VIR. One caveat on sizing: VIR is 2.7 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
PCG vs VIR: side by side
| PCG (PG&E Corporation) | VIR (Vir Biotechnology, Inc.) | |
|---|---|---|
| 1-year return | +20.3% | +116.3% |
| 5-year return | +102.7% | -77.3% |
| Volatility (ann.) | 24.7% | 67.1% |
| Beta vs S&P 500 | 0.24 | 0.85 |
| Max drawdown (3Y) | -39.6% | -67.4% |
| Market cap | $39.5B | $1.9B |
| P/E (trailing) | 12.9 | – |
| Dividend yield | 0.96% | 0.00% |
| Sector / category | Utilities | US Listed |
Year-by-year returns
| Year | PCG | VIR |
|---|---|---|
| 2022 | +33.9% | -39.6% |
| 2023 | +10.9% | -60.3% |
| 2024 | +12.3% | -27.0% |
| 2025 | -19.7% | -17.8% |
| 2026 | +12.3% | +87.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PCG and VIR good diversifiers for each other?
By historical standards, yes. A correlation of -0.22 means the two rarely move for the same reasons.
FAQ
What is the correlation between PCG and VIR?
As of 2026-08-27, the correlation of weekly returns between PCG and VIR is -0.22 over 3 years, -0.11 over 1 year and -0.05 over 5 years.
Is VIR a good diversifier for PCG?
By historical standards, yes. A correlation of -0.22 means the two rarely move for the same reasons.
What does a correlation of -0.22 mean?
A reading of -0.22 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/pcg-vs-vir.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/pcg-vs-vir/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PCG correlations · VIR correlations
