ATR vs ECL: Correlation
AptarGroup, Inc. (ATR) and Ecolab (ECL) show a strong relationship: their 3-year correlation of weekly returns is 0.61.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATR and ECL?
Over the past 3 years, ATR and ECL moved with a correlation of 0.61, which is strong. The link has tightened recently: the 1-year correlation (0.79) runs above the 3-year figure (0.61). Over 5 years the correlation is 0.63, and the annualized covariance of weekly returns is 250.3 %².
Among the 19 assets we track against ATR, ECL ranks #4 by 3-year correlation. The trailing year gives ECL the advantage: -3.3% versus +3.1%, a 6.4-point spread.
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.
ATR vs ECL: side by side
| ATR (AptarGroup, Inc.) | ECL (Ecolab) | |
|---|---|---|
| 1-year return | -3.3% | +3.1% |
| 5-year return | +4.9% | +34.0% |
| Volatility (ann.) | 21.0% | 19.5% |
| Beta vs S&P 500 | 0.53 | 0.64 |
| Max drawdown (3Y) | -35.2% | -20.1% |
| Market cap | $8.4B | $80.1B |
| P/E (trailing) | 24.4 | 39.1 |
| Dividend yield | 1.40% | 0.98% |
| Sector / category | US Listed | Materials |
Year-by-year returns
| Year | ATR | ECL |
|---|---|---|
| 2022 | -8.9% | -37.1% |
| 2023 | +13.9% | +37.9% |
| 2024 | +28.6% | +19.3% |
| 2025 | -21.4% | +13.2% |
| 2026 | +10.2% | +9.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATR and ECL good diversifiers for each other?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ATR and ECL?
As of 2026-08-27, the correlation of weekly returns between ATR and ECL is 0.61 over 3 years, 0.79 over 1 year and 0.63 over 5 years.
Is ECL a good diversifier for ATR?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.61 mean?
On the −1 to +1 scale, 0.61 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/atr-vs-ecl.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/atr-vs-ecl/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ATR correlations · ECL correlations
