PSX vs XOM: Correlation
How closely do Phillips 66 (PSX) and ExxonMobil (XOM) trade together? Their weekly returns over three years give a correlation of 0.70, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PSX and XOM?
Over the past 3 years, PSX and XOM moved with a correlation of 0.70, which is strong. Recent behaviour matches the longer record: 0.64 over 1 year against 0.70 over 3. Over 5 years the correlation is 0.72, and the annualized covariance of weekly returns is 571.7 %².
Among the 34 assets we track against PSX, XOM ranks #10 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months PSX outperformed by 43.4 percentage points (+86.2% for PSX against +42.8% for XOM). The rolling one-year correlation stayed in a tight band between 0.64 and 0.80 over the past three years, which points to a structural rather than episodic relationship.
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.
PSX vs XOM: side by side
| PSX (Phillips 66) | XOM (ExxonMobil) | |
|---|---|---|
| 1-year return | +86.2% | +42.8% |
| 5-year return | +301.8% | +237.9% |
| Volatility (ann.) | 33.4% | 24.3% |
| Beta vs S&P 500 | 0.58 | 0.01 |
| Max drawdown (3Y) | -44.4% | -20.1% |
| Market cap | $96.1B | $643.3B |
| P/E (trailing) | 13.8 | 20.1 |
| Dividend yield | 2.04% | 2.58% |
| Sector / category | Energy | Energy |
Year-by-year returns
| Year | PSX | XOM |
|---|---|---|
| 2022 | +49.6% | +87.4% |
| 2023 | +33.1% | -6.3% |
| 2024 | -11.6% | +11.3% |
| 2025 | +17.5% | +16.0% |
| 2026 | +89.7% | +32.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PSX and XOM good diversifiers for each other?
To a limited degree. At 0.70 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between PSX and XOM?
As of 2026-08-27, the correlation of weekly returns between PSX and XOM is 0.70 over 3 years, 0.64 over 1 year and 0.72 over 5 years.
Is XOM a good diversifier for PSX?
To a limited degree. At 0.70 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.70 mean?
A reading of 0.70 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/psx-vs-xom.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/psx-vs-xom/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: PSX correlations · XOM correlations
