DUK vs PCG: Correlation
How closely do Duke Energy (DUK) and PG&E Corporation (PCG) trade together? Their weekly returns over three years give a correlation of 0.52, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DUK and PCG?
Over the past 3 years, DUK and PCG moved with a correlation of 0.52, which is moderate. Little has changed lately, as the 1-year reading of 0.62 lands near the 3-year figure. Over 5 years the correlation is 0.41, and the annualized covariance of weekly returns is 204.8 %².
By 3-year correlation, PCG places #19 of the 53 assets tracked against DUK. Correlation aside, the last 12 months split them widely, with PCG ahead by 19.2 points (+1.1% versus +20.3%). The rolling one-year correlation moved between 0.24 and 0.73 over the past three years, a moderate range. One caveat on sizing: PCG is 1.6 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.
DUK vs PCG: side by side
| DUK (Duke Energy) | PCG (PG&E Corporation) | |
|---|---|---|
| 1-year return | +1.1% | +20.3% |
| 5-year return | +39.8% | +102.7% |
| Volatility (ann.) | 15.9% | 24.7% |
| Beta vs S&P 500 | -0.09 | 0.24 |
| Max drawdown (3Y) | -11.6% | -39.6% |
| Market cap | $94.2B | $39.5B |
| P/E (trailing) | 18.3 | 12.9 |
| Dividend yield | 3.49% | 0.96% |
| Sector / category | Utilities | Utilities |
Year-by-year returns
| Year | DUK | PCG |
|---|---|---|
| 2022 | +2.0% | +33.9% |
| 2023 | -1.6% | +10.9% |
| 2024 | +15.6% | +12.3% |
| 2025 | +12.7% | -19.7% |
| 2026 | +5.8% | +12.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DUK and PCG good diversifiers for each other?
Only partially. A correlation of 0.52 means DUK and PCG share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between DUK and PCG?
As of 2026-08-27, the correlation of weekly returns between DUK and PCG is 0.52 over 3 years, 0.62 over 1 year and 0.41 over 5 years.
Is PCG a good diversifier for DUK?
Only partially. A correlation of 0.52 means DUK and PCG share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.52 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/duk-vs-pcg.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/duk-vs-pcg/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DUK correlations · PCG correlations
