ECL vs SNN: Correlation
Ecolab (ECL) and Smith & Nephew SNATS, Inc. (SNN) show a moderate relationship: their 3-year correlation of weekly returns is 0.51.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECL and SNN?
Over the past 3 years, ECL and SNN moved with a correlation of 0.51, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.39 versus 0.51 over 3 years. Over 5 years the correlation is 0.49, and the annualized covariance of weekly returns is 259.7 %².
By 3-year correlation, SNN places #24 of the 53 assets tracked against ECL. Correlation aside, the last 12 months split them widely, with ECL ahead by 23.1 points (+3.1% versus -20.0%).
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 SNN: side by side
| ECL (Ecolab) | SNN (Smith & Nephew SNATS, Inc.) | |
|---|---|---|
| 1-year return | +3.1% | -20.0% |
| 5-year return | +34.0% | -13.6% |
| Volatility (ann.) | 19.5% | 26.3% |
| Beta vs S&P 500 | 0.64 | 0.60 |
| Max drawdown (3Y) | -20.1% | -24.0% |
| Market cap | $80.1B | $12.2B |
| P/E (trailing) | 39.1 | 20.0 |
| Dividend yield | 0.98% | 1.35% |
| Sector / category | Materials | US Listed |
Year-by-year returns
| Year | ECL | SNN |
|---|---|---|
| 2022 | -37.1% | -20.2% |
| 2023 | +37.9% | +4.4% |
| 2024 | +19.3% | -7.3% |
| 2025 | +13.2% | +36.8% |
| 2026 | +9.5% | -9.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECL and SNN good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ECL and SNN?
As of 2026-08-27, the correlation of weekly returns between ECL and SNN is 0.51 over 3 years, 0.39 over 1 year and 0.49 over 5 years.
Is SNN a good diversifier for ECL?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.51 mean?
On the −1 to +1 scale, 0.51 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-snn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ecl-vs-snn/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ECL correlations · SNN correlations
