FIX vs IESC: Correlation
Comfort Systems USA (FIX) and IES Holdings, Inc. (IESC) show a strong relationship: their 3-year correlation of weekly returns is 0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FIX and IESC?
Across a 3-year window, the weekly returns of FIX and IESC correlate at 0.63, strong. Little has changed lately, as the 1-year reading of 0.53 lands near the 3-year figure. Stretching to 5 years gives 0.60, with an annualized covariance of 2049.9 %².
Among the 37 assets we track against FIX, IESC ranks #9 by 3-year correlation. The last year tells two different stories: FIX led by 134.2 percentage points, +128.0% for FIX against -6.2% for IESC.
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 IESC: side by side
| FIX (Comfort Systems USA) | IESC (IES Holdings, Inc.) | |
|---|---|---|
| 1-year return | +128.0% | -6.2% |
| 5-year return | +2077.9% | +580.8% |
| Volatility (ann.) | 47.4% | 68.3% |
| Beta vs S&P 500 | 1.74 | 1.67 |
| Max drawdown (3Y) | -46.0% | -60.5% |
| Market cap | $56.8B | $13.3B |
| P/E (trailing) | 39.8 | 29.5 |
| Dividend yield | 0.16% | 0.00% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | FIX | IESC |
|---|---|---|
| 2022 | +17.0% | -29.8% |
| 2023 | +79.6% | +122.7% |
| 2024 | +106.9% | +153.7% |
| 2025 | +120.9% | +93.6% |
| 2026 | +73.3% | -14.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FIX and IESC good diversifiers for each other?
Somewhat, no more. With 0.63 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between FIX and IESC?
Using weekly returns as of 2026-08-27: 0.63 over 3 years, with 0.53 over the last year and 0.60 over 5 years.
Is IESC a good diversifier for FIX?
Somewhat, no more. With 0.63 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.63 mean?
A reading of 0.63 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-iesc.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/fix-vs-iesc/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: FIX correlations · IESC correlations
