AROC vs WMB: Correlation
Measured on weekly returns over the past three years, Archrock, Inc. (AROC) and Williams Companies (WMB) carry a correlation of 0.60, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AROC and WMB?
Over the past 3 years, AROC and WMB moved with a correlation of 0.60, which is strong. Recent behaviour matches the longer record: 0.58 over 1 year against 0.60 over 3. Over 5 years the correlation is 0.64, and the annualized covariance of weekly returns is 524.3 %².
Within AROC's tracked universe of 17 assets, WMB comes in at #7 by 3-year correlation. Neither side won the trailing year by much: +34.4% against +33.1%. Note the risk asymmetry: AROC runs 1.5 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
AROC vs WMB: side by side
| AROC (Archrock, Inc.) | WMB (Williams Companies) | |
|---|---|---|
| 1-year return | +34.4% | +33.1% |
| 5-year return | +420.1% | +279.9% |
| Volatility (ann.) | 36.3% | 24.0% |
| Beta vs S&P 500 | 0.87 | 0.34 |
| Max drawdown (3Y) | -30.3% | -12.4% |
| Market cap | $5.6B | $90.7B |
| P/E (trailing) | 17.0 | 29.7 |
| Dividend yield | 2.78% | 2.76% |
| Sector / category | US Listed | Energy |
Year-by-year returns
| Year | AROC | WMB |
|---|---|---|
| 2022 | +28.8% | +32.8% |
| 2023 | +81.0% | +11.9% |
| 2024 | +67.6% | +62.3% |
| 2025 | +8.0% | +14.9% |
| 2026 | +25.6% | +25.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AROC and WMB good diversifiers for each other?
Only partially. A correlation of 0.60 means AROC and WMB 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 AROC and WMB?
Using weekly returns as of 2026-08-27: 0.60 over 3 years, with 0.58 over the last year and 0.64 over 5 years.
Is WMB a good diversifier for AROC?
Only partially. A correlation of 0.60 means AROC and WMB share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.60 mean?
On the −1 to +1 scale, 0.60 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.
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Related comparisons
Hubs: AROC correlations · WMB correlations
