CMS vs PSIG: Correlation
CMS Energy (CMS) and PS International Group Ltd. (PSIG) show a negative relationship: their 3-year correlation of weekly returns is -0.30.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMS and PSIG?
Over the past 3 years, CMS and PSIG moved with a correlation of -0.30, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.34) sits close to the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -744.8 %².
Among the 42 assets we track against CMS, PSIG sits near the bottom by co-movement, at rank #39. The last year tells two different stories: CMS led by 51.5 percentage points, -2.4% for CMS against -53.9% for PSIG. Risk is not evenly split, since PSIG carries 9.7 times the volatility of the other side.
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 PSIG: side by side
| CMS (CMS Energy) | PSIG (PS International Group Ltd.) | |
|---|---|---|
| 1-year return | -2.4% | -53.9% |
| 5-year return | +23.8% | n/a |
| Volatility (ann.) | 16.2% | 157.0% |
| Beta vs S&P 500 | -0.01 | 0.97 |
| Max drawdown (3Y) | -13.2% | -96.0% |
| Market cap | $21.4B | – |
| P/E (trailing) | 20.8 | – |
| Dividend yield | 3.21% | 0.00% |
| Sector / category | Utilities | US Listed |
Year-by-year returns
| Year | CMS | PSIG |
|---|---|---|
| 2022 | +0.2% | – |
| 2023 | -5.2% | – |
| 2024 | +18.6% | – |
| 2025 | +8.1% | +8.3% |
| 2026 | +0.0% | -62.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMS and PSIG good diversifiers for each other?
By historical standards, yes. A correlation of -0.30 means the two rarely move for the same reasons.
FAQ
What is the correlation between CMS and PSIG?
The CMS/PSIG correlation stands at -0.30 on a 3-year window (1 year: -0.34, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is PSIG a good diversifier for CMS?
By historical standards, yes. A correlation of -0.30 means the two rarely move for the same reasons.
What does a correlation of -0.30 mean?
A reading of -0.30 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-psig.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cms-vs-psig/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CMS correlations · PSIG correlations
