AEE vs CAH: Correlation
How closely do Ameren (AEE) and Cardinal Health (CAH) trade together? Their weekly returns over three years give a correlation of 0.40, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AEE and CAH?
Over the past 3 years, AEE and CAH moved with a correlation of 0.40, which is moderate. Recent behaviour matches the longer record: 0.37 over 1 year against 0.40 over 3. Over 5 years the correlation is 0.37, and the annualized covariance of weekly returns is 173.3 %².
Among the 35 assets we track against AEE, CAH ranks #22 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months CAH outperformed by 50.4 percentage points (+8.8% for AEE against +59.2% for CAH). On a rolling one-year basis the correlation drifted between 0.18 and 0.50, 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 CAH: side by side
| AEE (Ameren) | CAH (Cardinal Health) | |
|---|---|---|
| 1-year return | +8.8% | +59.2% |
| 5-year return | +39.7% | +409.0% |
| Volatility (ann.) | 17.8% | 24.2% |
| Beta vs S&P 500 | 0.10 | 0.31 |
| Max drawdown (3Y) | -16.5% | -20.4% |
| Market cap | $29.6B | $54.7B |
| P/E (trailing) | 19.0 | 33.0 |
| Dividend yield | 2.71% | 0.86% |
| Sector / category | Utilities | Health Care |
Year-by-year returns
| Year | AEE | CAH |
|---|---|---|
| 2022 | +2.5% | +54.1% |
| 2023 | -16.1% | +34.1% |
| 2024 | +27.5% | +19.0% |
| 2025 | +15.3% | +76.3% |
| 2026 | +8.4% | +15.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AEE and CAH good diversifiers for each other?
Reasonably. At 0.40, AEE and CAH keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between AEE and CAH?
The AEE/CAH correlation stands at 0.40 on a 3-year window (1 year: 0.37, 5 years: 0.37), computed from weekly returns as of 2026-08-27.
Is CAH a good diversifier for AEE?
Reasonably. At 0.40, AEE and CAH keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.40 mean?
On the −1 to +1 scale, 0.40 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.
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Related comparisons
Hubs: AEE correlations · CAH correlations
