HAL vs PSX: Correlation
Measured on weekly returns over the past three years, Halliburton (HAL) and Phillips 66 (PSX) carry a correlation of 0.66, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are HAL and PSX?
On 3 years of weekly data the HAL/PSX correlation comes out at 0.66, strong. The relationship has been stable: the 1-year correlation (0.59) sits close to the 3-year figure. The 5-year figure is 0.68, and annualized covariance runs at 840.9 %².
By 3-year correlation, PSX places #23 of the 44 assets tracked against HAL. The last year tells two different stories: PSX led by 23.4 percentage points, +62.8% for HAL against +86.2% for PSX. Stability stands out here, with the rolling one-year correlation confined to 0.57 through 0.80.
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.
HAL vs PSX: side by side
| HAL (Halliburton) | PSX (Phillips 66) | |
|---|---|---|
| 1-year return | +62.8% | +86.2% |
| 5-year return | +93.6% | +301.8% |
| Volatility (ann.) | 38.0% | 33.4% |
| Beta vs S&P 500 | 0.55 | 0.58 |
| Max drawdown (3Y) | -54.0% | -44.4% |
| Market cap | $29.6B | $96.1B |
| P/E (trailing) | 18.0 | 13.8 |
| Dividend yield | 1.97% | 2.04% |
| Sector / category | Energy | Energy |
Year-by-year returns
| Year | HAL | PSX |
|---|---|---|
| 2022 | +74.5% | +49.6% |
| 2023 | -6.5% | +33.1% |
| 2024 | -23.2% | -11.6% |
| 2025 | +7.0% | +17.5% |
| 2026 | +26.7% | +89.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are HAL and PSX good diversifiers for each other?
Only partially. A correlation of 0.66 means HAL and PSX 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 HAL and PSX?
Using weekly returns as of 2026-08-27: 0.66 over 3 years, with 0.59 over the last year and 0.68 over 5 years.
Is PSX a good diversifier for HAL?
Only partially. A correlation of 0.66 means HAL and PSX share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.66 mean?
A reading of 0.66 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/hal-vs-psx.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/hal-vs-psx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: HAL correlations · PSX correlations
