AEP vs DUK: Correlation
American Electric Power (AEP) and Duke Energy (DUK) show a strong relationship: their 3-year correlation of weekly returns is 0.75.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AEP and DUK?
Over the past 3 years, AEP and DUK moved with a correlation of 0.75, which is strong. The relationship has been stable: the 1-year correlation (0.84) sits close to the 3-year figure. Over 5 years the correlation is 0.82, and the annualized covariance of weekly returns is 227.3 %².
By 3-year correlation, DUK places #4 of the 36 assets tracked against AEP. The trailing year gives AEP the advantage: +12.1% versus +1.1%, a 11.0-point spread. On a rolling one-year basis the correlation drifted between 0.63 and 0.91, a moderate band.
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.
AEP vs DUK: side by side
| AEP (American Electric Power) | DUK (Duke Energy) | |
|---|---|---|
| 1-year return | +12.1% | +1.1% |
| 5-year return | +63.9% | +39.8% |
| Volatility (ann.) | 18.9% | 15.9% |
| Beta vs S&P 500 | -0.01 | -0.09 |
| Max drawdown (3Y) | -13.1% | -11.6% |
| Market cap | $66.8B | $94.2B |
| P/E (trailing) | 21.4 | 18.3 |
| Dividend yield | 3.06% | 3.49% |
| Sector / category | Utilities | Utilities |
Year-by-year returns
| Year | AEP | DUK |
|---|---|---|
| 2022 | +10.4% | +2.0% |
| 2023 | -11.0% | -1.6% |
| 2024 | +18.2% | +15.6% |
| 2025 | +29.4% | +12.7% |
| 2026 | +8.9% | +5.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AEP and DUK good diversifiers for each other?
Only partially. A correlation of 0.75 means AEP and DUK 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 AEP and DUK?
As of 2026-08-27, the correlation of weekly returns between AEP and DUK is 0.75 over 3 years, 0.84 over 1 year and 0.82 over 5 years.
Is DUK a good diversifier for AEP?
Only partially. A correlation of 0.75 means AEP and DUK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.75 mean?
A reading of 0.75 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/aep-vs-duk.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aep-vs-duk/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AEP correlations · DUK correlations
