DUK vs PPL: Correlation
Measured on weekly returns over the past three years, Duke Energy (DUK) and PPL Corporation (PPL) carry a correlation of 0.78, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DUK and PPL?
On 3 years of weekly data the DUK/PPL correlation comes out at 0.78, strong. The relationship has been stable: the 1-year correlation (0.84) sits close to the 3-year figure. The 5-year figure is 0.80, and annualized covariance runs at 218.0 %².
Among the 53 assets we track against DUK, PPL ranks #8 by 3-year correlation. Twelve-month performance is nearly a tie, at +1.1% for DUK and -3.0% for PPL. Stability stands out here, with the rolling one-year correlation confined to 0.66 through 0.87.
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 PPL: side by side
| DUK (Duke Energy) | PPL (PPL Corporation) | |
|---|---|---|
| 1-year return | +1.1% | -3.0% |
| 5-year return | +39.8% | +41.1% |
| Volatility (ann.) | 15.9% | 17.4% |
| Beta vs S&P 500 | -0.09 | 0.13 |
| Max drawdown (3Y) | -11.6% | -13.3% |
| Market cap | $94.2B | $25.9B |
| P/E (trailing) | 18.3 | 20.7 |
| Dividend yield | 3.49% | 3.18% |
| Sector / category | Utilities | Utilities |
Year-by-year returns
| Year | DUK | PPL |
|---|---|---|
| 2022 | +2.0% | +0.4% |
| 2023 | -1.6% | -3.8% |
| 2024 | +15.6% | +24.0% |
| 2025 | +12.7% | +11.4% |
| 2026 | +5.8% | -0.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DUK and PPL good diversifiers for each other?
To a limited degree. At 0.78 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between DUK and PPL?
The DUK/PPL correlation stands at 0.78 on a 3-year window (1 year: 0.84, 5 years: 0.80), computed from weekly returns as of 2026-08-27.
Is PPL a good diversifier for DUK?
To a limited degree. At 0.78 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.78 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-ppl.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/duk-vs-ppl/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DUK correlations · PPL correlations
