MPC vs SM: Correlation
How closely do Marathon Petroleum (MPC) and SM Energy Company (SM) trade together? Their weekly returns over three years give a correlation of 0.67, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MPC and SM?
Over the past 3 years, MPC and SM moved with a correlation of 0.67, which is strong. Recent behaviour matches the longer record: 0.68 over 1 year against 0.67 over 3. Over 5 years the correlation is 0.65, and the annualized covariance of weekly returns is 1086.1 %².
Within MPC's tracked universe of 29 assets, SM comes in at #10 by 3-year correlation. Correlation aside, the last 12 months split them widely, with MPC ahead by 71.7 points (+107.8% versus +36.1%).
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 SM: side by side
| MPC (Marathon Petroleum) | SM (SM Energy Company) | |
|---|---|---|
| 1-year return | +107.8% | +36.1% |
| 5-year return | +589.6% | +114.6% |
| Volatility (ann.) | 34.2% | 47.6% |
| Beta vs S&P 500 | 0.48 | 0.44 |
| Max drawdown (3Y) | -44.7% | -64.9% |
| Market cap | $102.1B | $8.8B |
| P/E (trailing) | 12.6 | 6.3 |
| Dividend yield | 1.10% | 2.32% |
| Sector / category | Energy | US Listed |
Year-by-year returns
| Year | MPC | SM |
|---|---|---|
| 2022 | +86.6% | +18.6% |
| 2023 | +30.5% | +13.1% |
| 2024 | -4.1% | +1.8% |
| 2025 | +19.2% | -49.7% |
| 2026 | +126.1% | +99.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MPC and SM good diversifiers for each other?
Somewhat, no more. With 0.67 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between MPC and SM?
The MPC/SM correlation stands at 0.67 on a 3-year window (1 year: 0.68, 5 years: 0.65), computed from weekly returns as of 2026-08-27.
Is SM a good diversifier for MPC?
Somewhat, no more. With 0.67 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.67 mean?
A reading of 0.67 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/mpc-vs-sm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mpc-vs-sm/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: MPC correlations · SM correlations
