ECL vs GRBK: Correlation
How closely do Ecolab (ECL) and Green Brick Partners, Inc. (GRBK) trade together? Their weekly returns over three years give a correlation of 0.62, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECL and GRBK?
Over the past 3 years, ECL and GRBK moved with a correlation of 0.62, which is strong. Little has changed lately, as the 1-year reading of 0.64 lands near the 3-year figure. Over 5 years the correlation is 0.56, and the annualized covariance of weekly returns is 454.6 %².
Within ECL's tracked universe of 53 assets, GRBK comes in at #8 by 3-year correlation. Twelve-month performance is nearly a tie, at +3.1% for ECL and +4.5% for GRBK. One caveat on sizing: GRBK 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.
ECL vs GRBK: side by side
| ECL (Ecolab) | GRBK (Green Brick Partners, Inc.) | |
|---|---|---|
| 1-year return | +3.1% | +4.5% |
| 5-year return | +34.0% | +186.8% |
| Volatility (ann.) | 19.5% | 37.3% |
| Beta vs S&P 500 | 0.64 | 1.07 |
| Max drawdown (3Y) | -20.1% | -36.1% |
| Market cap | $80.1B | $3.1B |
| P/E (trailing) | 39.1 | 11.1 |
| Dividend yield | 0.98% | 0.00% |
| Sector / category | Materials | US Listed |
Year-by-year returns
| Year | ECL | GRBK |
|---|---|---|
| 2022 | -37.1% | -20.1% |
| 2023 | +37.9% | +114.4% |
| 2024 | +19.3% | +8.8% |
| 2025 | +13.2% | +10.9% |
| 2026 | +9.5% | +16.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECL and GRBK good diversifiers for each other?
Only partially. A correlation of 0.62 means ECL and GRBK 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 ECL and GRBK?
As of 2026-08-27, the correlation of weekly returns between ECL and GRBK is 0.62 over 3 years, 0.64 over 1 year and 0.56 over 5 years.
Is GRBK a good diversifier for ECL?
Only partially. A correlation of 0.62 means ECL and GRBK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.62 mean?
On the −1 to +1 scale, 0.62 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/ecl-vs-grbk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ecl-vs-grbk/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ECL correlations · GRBK correlations
