CEG vs FIX: Correlation
Measured on weekly returns over the past three years, Constellation Energy (CEG) and Comfort Systems USA (FIX) carry a correlation of 0.47, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CEG and FIX?
Over the past 3 years, CEG and FIX moved with a correlation of 0.47, which is moderate. The link has loosened recently: the 1-year correlation (0.15) runs below the 3-year figure (0.47). Over 5 years the correlation is 0.42, and the annualized covariance of weekly returns is 1152.6 %².
Within CEG's tracked universe of 32 assets, FIX comes in at #11 by 3-year correlation. The last year tells two different stories: FIX led by 138.1 percentage points, -10.1% for CEG against +128.0% for FIX. Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from 0.03 to 0.67.
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.
CEG vs FIX: side by side
| CEG (Constellation Energy) | FIX (Comfort Systems USA) | |
|---|---|---|
| 1-year return | -10.1% | +128.0% |
| 5-year return | +598.5% | +2077.9% |
| Volatility (ann.) | 52.1% | 47.4% |
| Beta vs S&P 500 | 1.42 | 1.74 |
| Max drawdown (3Y) | -50.7% | -46.0% |
| Market cap | $100.1B | $56.8B |
| P/E (trailing) | 27.3 | 39.8 |
| Dividend yield | 0.58% | 0.16% |
| Sector / category | Utilities | Industrials |
Year-by-year returns
| Year | CEG | FIX |
|---|---|---|
| 2022 | – | +17.0% |
| 2023 | +37.2% | +79.6% |
| 2024 | +92.7% | +106.9% |
| 2025 | +58.8% | +120.9% |
| 2026 | -19.7% | +73.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CEG and FIX good diversifiers for each other?
Reasonably. At 0.47, CEG and FIX keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CEG and FIX?
The CEG/FIX correlation stands at 0.47 on a 3-year window (1 year: 0.15, 5 years: 0.42), computed from weekly returns as of 2026-08-27.
Is FIX a good diversifier for CEG?
Reasonably. At 0.47, CEG and FIX keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.47 mean?
On the −1 to +1 scale, 0.47 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/ceg-vs-fix.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ceg-vs-fix/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CEG correlations · FIX correlations
