CWH vs ERII: Correlation
Camping World Holdings, Inc. (CWH) and Energy Recovery, Inc. (ERII) show a moderate relationship: their 3-year correlation of weekly returns is 0.48.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CWH and ERII?
Over the past 3 years, CWH and ERII moved with a correlation of 0.48, which is moderate. Little has changed lately, as the 1-year reading of 0.54 lands near the 3-year figure. Over 5 years the correlation is 0.45, and the annualized covariance of weekly returns is 1502.5 %².
By 3-year correlation, ERII places #18 of the 28 assets tracked against CWH. The last year tells two different stories: ERII led by 17.2 percentage points, -63.0% for CWH against -45.8% for ERII.
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.
CWH vs ERII: side by side
| CWH (Camping World Holdings, Inc.) | ERII (Energy Recovery, Inc.) | |
|---|---|---|
| 1-year return | -63.0% | -45.8% |
| 5-year return | -79.9% | -60.7% |
| Volatility (ann.) | 60.7% | 51.2% |
| Beta vs S&P 500 | 2.02 | 1.44 |
| Max drawdown (3Y) | -79.1% | -72.4% |
| Market cap | $0.4B | $0.4B |
| P/E (trailing) | – | 30.4 |
| Dividend yield | 3.84% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CWH | ERII |
|---|---|---|
| 2022 | -39.6% | -4.7% |
| 2023 | +25.1% | -8.1% |
| 2024 | -17.9% | -22.0% |
| 2025 | -52.2% | -8.2% |
| 2026 | -33.9% | -41.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CWH and ERII good diversifiers for each other?
Reasonably. At 0.48, CWH and ERII keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CWH and ERII?
Using weekly returns as of 2026-08-27: 0.48 over 3 years, with 0.54 over the last year and 0.45 over 5 years.
Is ERII a good diversifier for CWH?
Reasonably. At 0.48, CWH and ERII keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.48 mean?
On the −1 to +1 scale, 0.48 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/cwh-vs-erii.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cwh-vs-erii/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CWH correlations · ERII correlations
