CLH vs COST: Correlation
Measured on weekly returns over the past three years, Clean Harbors, Inc. (CLH) and Costco (COST) carry a correlation of 0.42, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CLH and COST?
Across a 3-year window, the weekly returns of CLH and COST correlate at 0.42, moderate. Little has changed lately, as the 1-year reading of 0.35 lands near the 3-year figure. Stretching to 5 years gives 0.40, with an annualized covariance of 197.7 %².
By 3-year correlation, COST places #9 of the 17 assets tracked against CLH. The last year tells two different stories: CLH led by 28.0 percentage points, +27.0% for CLH against -1.0% for COST.
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.
CLH vs COST: side by side
| CLH (Clean Harbors, Inc.) | COST (Costco) | |
|---|---|---|
| 1-year return | +27.0% | -1.0% |
| 5-year return | +204.2% | +116.3% |
| Volatility (ann.) | 23.8% | 19.8% |
| Beta vs S&P 500 | 0.66 | 0.45 |
| Max drawdown (3Y) | -30.9% | -20.7% |
| Market cap | $16.5B | $414.5B |
| P/E (trailing) | 37.8 | 48.1 |
| Dividend yield | 0.00% | 0.56% |
| Sector / category | US Listed | Consumer Staples |
Year-by-year returns
| Year | CLH | COST |
|---|---|---|
| 2022 | +14.4% | -19.0% |
| 2023 | +52.9% | +49.0% |
| 2024 | +31.9% | +39.6% |
| 2025 | +1.9% | -5.4% |
| 2026 | +33.0% | +8.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CLH and COST good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between CLH and COST?
Using weekly returns as of 2026-08-27: 0.42 over 3 years, with 0.35 over the last year and 0.40 over 5 years.
Is COST a good diversifier for CLH?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.42 mean?
On the −1 to +1 scale, 0.42 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/clh-vs-cost.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/clh-vs-cost/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CLH correlations · COST correlations
