CMS vs GOOGL: Correlation
How closely do CMS Energy (CMS) and Alphabet Inc. (Class A) (GOOGL) trade together? Their weekly returns over three years give a correlation of -0.31, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMS and GOOGL?
On 3 years of weekly data the CMS/GOOGL correlation comes out at -0.31, negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.32 lands near the 3-year figure. The 5-year figure is -0.07, and annualized covariance runs at -155.3 %².
Out of 42 assets tracked against CMS, GOOGL lands near the bottom at #42. Correlation aside, the last 12 months split them widely, with GOOGL ahead by 67.1 points (-2.4% versus +64.7%). This link changes with the market regime, having swung between -0.41 and 0.09 on a rolling one-year basis. One caveat on sizing: GOOGL is 1.9 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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 GOOGL: side by side
| CMS (CMS Energy) | GOOGL (Alphabet Inc. (Class A)) | |
|---|---|---|
| 1-year return | -2.4% | +64.7% |
| 5-year return | +23.8% | +137.7% |
| Volatility (ann.) | 16.2% | 31.4% |
| Beta vs S&P 500 | -0.01 | 1.22 |
| Max drawdown (3Y) | -13.2% | -29.8% |
| Market cap | $21.4B | $4,166.1B |
| P/E (trailing) | 20.8 | 17.2 |
| Dividend yield | 3.21% | 0.25% |
| Sector / category | Utilities | Communication Services |
Year-by-year returns
| Year | CMS | GOOGL |
|---|---|---|
| 2022 | +0.2% | -39.1% |
| 2023 | -5.2% | +58.3% |
| 2024 | +18.6% | +36.0% |
| 2025 | +8.1% | +66.0% |
| 2026 | +0.0% | +9.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMS and GOOGL good diversifiers for each other?
Yes: at -0.31, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between CMS and GOOGL?
Using weekly returns as of 2026-08-27: -0.31 over 3 years, with -0.32 over the last year and -0.07 over 5 years.
Is GOOGL a good diversifier for CMS?
Yes: at -0.31, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.31 mean?
On the −1 to +1 scale, -0.31 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/cms-vs-googl.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cms-vs-googl/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CMS correlations · GOOGL correlations
