AEE vs EXC: Correlation
Measured on weekly returns over the past three years, Ameren (AEE) and Exelon (EXC) carry a correlation of 0.81, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AEE and EXC?
On 3 years of weekly data the AEE/EXC correlation comes out at 0.81, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.81 lands near the 3-year figure. The 5-year figure is 0.82, and annualized covariance runs at 279.3 %².
By 3-year correlation, EXC places #6 of the 35 assets tracked against AEE. The trailing year gives AEE the advantage: +8.8% versus +1.7%, a 7.1-point spread. On a rolling one-year basis the correlation drifted between 0.62 and 0.89, 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.
AEE vs EXC: side by side
| AEE (Ameren) | EXC (Exelon) | |
|---|---|---|
| 1-year return | +8.8% | +1.7% |
| 5-year return | +39.7% | +48.1% |
| Volatility (ann.) | 17.8% | 19.4% |
| Beta vs S&P 500 | 0.10 | -0.05 |
| Max drawdown (3Y) | -16.5% | -18.9% |
| Market cap | $29.6B | $45.3B |
| P/E (trailing) | 19.0 | 16.3 |
| Dividend yield | 2.71% | 3.69% |
| Sector / category | Utilities | Utilities |
Year-by-year returns
| Year | AEE | EXC |
|---|---|---|
| 2022 | +2.5% | +8.3% |
| 2023 | -16.1% | -14.0% |
| 2024 | +27.5% | +9.2% |
| 2025 | +15.3% | +20.0% |
| 2026 | +8.4% | +2.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AEE and EXC good diversifiers for each other?
No: a correlation of 0.81 means AEE and EXC tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between AEE and EXC?
The AEE/EXC correlation stands at 0.81 on a 3-year window (1 year: 0.81, 5 years: 0.82), computed from weekly returns as of 2026-08-27.
Is EXC a good diversifier for AEE?
No: a correlation of 0.81 means AEE and EXC tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 0.81 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/aee-vs-exc.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aee-vs-exc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AEE correlations · EXC correlations
