CWT vs YORW: Correlation
Measured on weekly returns over the past three years, California Water Service Group (CWT) and The York Water Company (YORW) carry a correlation of 0.73, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CWT and YORW?
Over the past 3 years, CWT and YORW moved with a correlation of 0.73, which is strong. Little has changed lately, as the 1-year reading of 0.65 lands near the 3-year figure. Over 5 years the correlation is 0.67, and the annualized covariance of weekly returns is 334.5 %².
By 3-year correlation, YORW places #6 of the 15 assets tracked against CWT. Twelve-month performance is nearly a tie, at +9.3% for CWT and +10.9% for YORW.
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.
CWT vs YORW: side by side
| CWT (California Water Service Group) | YORW (The York Water Company) | |
|---|---|---|
| 1-year return | +9.3% | +10.9% |
| 5-year return | -12.2% | -26.0% |
| Volatility (ann.) | 22.3% | 20.5% |
| Beta vs S&P 500 | 0.10 | 0.18 |
| Max drawdown (3Y) | -24.1% | -26.4% |
| Market cap | $3.1B | $0.5B |
| P/E (trailing) | 22.6 | 21.2 |
| Dividend yield | 2.53% | 2.64% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CWT | YORW |
|---|---|---|
| 2022 | -14.1% | -7.9% |
| 2023 | -12.8% | -12.4% |
| 2024 | -10.6% | -13.2% |
| 2025 | -1.8% | +0.1% |
| 2026 | +18.2% | +7.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CWT and YORW good diversifiers for each other?
Only partially. A correlation of 0.73 means CWT and YORW 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 CWT and YORW?
As of 2026-08-27, the correlation of weekly returns between CWT and YORW is 0.73 over 3 years, 0.65 over 1 year and 0.67 over 5 years.
Is YORW a good diversifier for CWT?
Only partially. A correlation of 0.73 means CWT and YORW share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.73 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cwt-vs-yorw.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cwt-vs-yorw/)
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Related comparisons
Hubs: CWT correlations · YORW correlations
