CMS vs LNT: Correlation
CMS Energy (CMS) and Alliant Energy (LNT) show a very strong relationship: their 3-year correlation of weekly returns is 0.84.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMS and LNT?
Over the past 3 years, CMS and LNT moved with a correlation of 0.84, which is very strong, meaning they move nearly in lockstep. The relationship has been stable: the 1-year correlation (0.90) sits close to the 3-year figure. Over 5 years the correlation is 0.89, and the annualized covariance of weekly returns is 238.7 %².
In CMS's tracked universe of 42 assets, LNT sits right near the top at #2. The trailing year gives LNT the advantage: -2.4% versus +6.9%, a 9.3-point spread. The rolling one-year correlation stayed in a tight band between 0.78 and 0.95 over the past three years, which points to a structural rather than episodic relationship.
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.
CMS vs LNT: side by side
| CMS (CMS Energy) | LNT (Alliant Energy) | |
|---|---|---|
| 1-year return | -2.4% | +6.9% |
| 5-year return | +23.8% | +31.9% |
| Volatility (ann.) | 16.2% | 17.5% |
| Beta vs S&P 500 | -0.01 | 0.09 |
| Max drawdown (3Y) | -13.2% | -12.4% |
| Market cap | $21.4B | $17.7B |
| P/E (trailing) | 20.8 | 21.8 |
| Dividend yield | 3.21% | 3.03% |
| Sector / category | Utilities | Utilities |
Year-by-year returns
| Year | CMS | LNT |
|---|---|---|
| 2022 | +0.2% | -7.4% |
| 2023 | -5.2% | -3.8% |
| 2024 | +18.6% | +19.5% |
| 2025 | +8.1% | +13.5% |
| 2026 | +0.0% | +7.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMS and LNT good diversifiers for each other?
Not really. At 0.84, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between CMS and LNT?
As of 2026-08-27, the correlation of weekly returns between CMS and LNT is 0.84 over 3 years, 0.90 over 1 year and 0.89 over 5 years.
Is LNT a good diversifier for CMS?
Not really. At 0.84, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.84 mean?
A reading of 0.84 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/cms-vs-lnt.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cms-vs-lnt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CMS correlations · LNT correlations
