FIX vs VST: Correlation
Measured on weekly returns over the past three years, Comfort Systems USA (FIX) and Vistra Corp. (VST) carry a correlation of 0.56, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FIX and VST?
Over the past 3 years, FIX and VST moved with a correlation of 0.56, which is moderate. The past 12 months show a weaker link (0.31) than the 3-year average (0.56). Over 5 years the correlation is 0.50, and the annualized covariance of weekly returns is 1412.1 %².
Within FIX's tracked universe of 37 assets, VST comes in at #16 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months FIX outperformed by 155.8 percentage points (+128.0% for FIX against -27.8% for VST). This link changes with the market regime, having swung between -0.18 and 0.75 on a rolling one-year basis.
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.
FIX vs VST: side by side
| FIX (Comfort Systems USA) | VST (Vistra Corp.) | |
|---|---|---|
| 1-year return | +128.0% | -27.8% |
| 5-year return | +2077.9% | +713.7% |
| Volatility (ann.) | 47.4% | 52.8% |
| Beta vs S&P 500 | 1.74 | 1.62 |
| Max drawdown (3Y) | -46.0% | -48.8% |
| Market cap | $56.8B | $46.9B |
| P/E (trailing) | 39.8 | 23.6 |
| Dividend yield | 0.16% | 0.65% |
| Sector / category | Industrials | Utilities |
Year-by-year returns
| Year | FIX | VST |
|---|---|---|
| 2022 | +17.0% | +5.1% |
| 2023 | +79.6% | +70.7% |
| 2024 | +106.9% | +261.5% |
| 2025 | +120.9% | +17.7% |
| 2026 | +73.3% | -13.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FIX and VST good diversifiers for each other?
Only partially. A correlation of 0.56 means FIX and VST share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between FIX and VST?
As of 2026-08-27, the correlation of weekly returns between FIX and VST is 0.56 over 3 years, 0.31 over 1 year and 0.50 over 5 years.
Is VST a good diversifier for FIX?
Only partially. A correlation of 0.56 means FIX and VST share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.56 mean?
A reading of 0.56 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/fix-vs-vst.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/fix-vs-vst/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: FIX correlations · VST correlations
