Marathon Petroleum vs Valero Energy: which stock is doing better?
Marathon Petroleum and Valero Energy are business rivals. Where they compete: large-scale independent petroleum refining and wholesale fuel marketing. Here is how the two stocks, and the businesses behind them, compare over the past year.
Updated Oct 9, 2026
VLO ahead
On Stox’s P3 score, which combines market beat, staying power and business growth, Valero Energy rates 83 and Marathon Petroleum 78. Over the past year Marathon Petroleum is +141% and Valero Energy +167%, against +16% for the S&P 500. Both are the Bellwether type.
The past year
MPC against VLO, each set to $100 a year ago. Select a measure in the table below to chart it for both.
MPC and VLO side by side
Ahead marks the stronger reading on each line; for the typical day and the deepest fall it marks the steadier stock. Select a row with a chart to see both over the year.
| Measure | MPC | VLO | Ahead |
|---|---|---|---|
P3 score Market beat, staying power and business growth combined | 78Strong | 83Strong | VLO |
Past year Share price change | +141% | +167% | VLO |
Past 3 months Share price change | +53% | +47% | MPC |
Past month Share price change | +16% | +13% | MPC |
Market beat Return against the market, past year | 98Strong | 98Strong | Level |
Staying power How steadily it has led, 52 weeks | 87Strong | 91Strong | VLO |
Business growth Revenue, margins and cash flow growth | 56Middling | 64Middling | VLO |
Money flow Buying against selling on volume, 60 days | 100Strong | 97Strong | MPC |
Revenue growth Past four quarters against the year before | −1% | −2% | Level |
Operating margin Operating profit as a share of revenue, past four quarters | 5% | 5% | Level |
Typical day Average daily move over the past year | 3.2% | 3.4% | MPC, calmer |
Deepest fall From a high, past year | −19% | −13% | VLO, held up |
Market value What the market values the company at | $132.8B | $124.9B | |
Type Its Stox Atlas type | Bellwether | Bellwether | |
Group Stocks it moves with | Energy | Energy | Same group |
How to read this page
How it’s measured. Scores from Stox rank each stock against about 1,200 large US stocks and funds, where 100 is best; P3 combines market beat, staying power and business growth. Returns are share-price changes. The typical day is the average true range over 14 days as a share of the price, averaged over the past year.
Sources. Daily prices and company financial statements from Financial Modeling Prep; scores and curated rivals from Stox.
A higher score describes a stronger past year, not what comes next.
Rivals are chosen by the markets the two businesses compete in, not by sector labels.
For financial statements, valuation and news, see MPC and VLO on Stox.
This page is information, not investment advice. About our data and methods ›