AEE vs IDA: Correlation
Measured on weekly returns over the past three years, Ameren (AEE) and IDACORP, Inc. (IDA) 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 AEE and IDA?
Over the past 3 years, AEE and IDA moved with a correlation of 0.78, which is strong. The relationship has been stable: the 1-year correlation (0.87) sits close to the 3-year figure. Over 5 years the correlation is 0.80, and the annualized covariance of weekly returns is 246.9 %².
Among the 35 assets we track against AEE, IDA ranks #11 by 3-year correlation. Neither side won the trailing year by much: +8.8% against +11.6%.
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 IDA: side by side
| AEE (Ameren) | IDA (IDACORP, Inc.) | |
|---|---|---|
| 1-year return | +8.8% | +11.6% |
| 5-year return | +39.7% | +51.7% |
| Volatility (ann.) | 17.8% | 17.8% |
| Beta vs S&P 500 | 0.10 | 0.10 |
| Max drawdown (3Y) | -16.5% | -13.6% |
| Market cap | $29.6B | $8.0B |
| P/E (trailing) | 19.0 | 22.9 |
| Dividend yield | 2.71% | 2.53% |
| Sector / category | Utilities | US Listed |
Year-by-year returns
| Year | AEE | IDA |
|---|---|---|
| 2022 | +2.5% | -2.1% |
| 2023 | -16.1% | -6.0% |
| 2024 | +27.5% | +15.0% |
| 2025 | +15.3% | +19.2% |
| 2026 | +8.4% | +10.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AEE and IDA 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 AEE and IDA?
As of 2026-08-27, the correlation of weekly returns between AEE and IDA is 0.78 over 3 years, 0.87 over 1 year and 0.80 over 5 years.
Is IDA a good diversifier for AEE?
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?
On the −1 to +1 scale, 0.78 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/aee-vs-ida.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/aee-vs-ida/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AEE correlations · IDA correlations
