MPC vs XOM: Correlation
Measured on weekly returns over the past three years, Marathon Petroleum (MPC) and ExxonMobil (XOM) carry a correlation of 0.64, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MPC and XOM?
Over the past 3 years, MPC and XOM moved with a correlation of 0.64, which is strong. The relationship has been stable: the 1-year correlation (0.56) sits close to the 3-year figure. Over 5 years the correlation is 0.69, and the annualized covariance of weekly returns is 534.3 %².
Among the 29 assets we track against MPC, XOM ranks #15 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months MPC outperformed by 65.0 percentage points (+107.8% for MPC against +42.8% for XOM). The link looks structural: the rolling one-year correlation barely moved, holding between 0.57 and 0.75.
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.
MPC vs XOM: side by side
| MPC (Marathon Petroleum) | XOM (ExxonMobil) | |
|---|---|---|
| 1-year return | +107.8% | +42.8% |
| 5-year return | +589.6% | +237.9% |
| Volatility (ann.) | 34.2% | 24.3% |
| Beta vs S&P 500 | 0.48 | 0.01 |
| Max drawdown (3Y) | -44.7% | -20.1% |
| Market cap | $102.1B | $643.3B |
| P/E (trailing) | 12.6 | 20.1 |
| Dividend yield | 1.10% | 2.58% |
| Sector / category | Energy | Energy |
Year-by-year returns
| Year | MPC | XOM |
|---|---|---|
| 2022 | +86.6% | +87.4% |
| 2023 | +30.5% | -6.3% |
| 2024 | -4.1% | +11.3% |
| 2025 | +19.2% | +16.0% |
| 2026 | +126.1% | +32.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MPC and XOM good diversifiers for each other?
To a limited degree. At 0.64 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 MPC and XOM?
As of 2026-08-27, the correlation of weekly returns between MPC and XOM is 0.64 over 3 years, 0.56 over 1 year and 0.69 over 5 years.
Is XOM a good diversifier for MPC?
To a limited degree. At 0.64 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 0.64 mean?
On the −1 to +1 scale, 0.64 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/mpc-vs-xom.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/mpc-vs-xom/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: MPC correlations · XOM correlations
