Williams Companies vs Marathon Petroleum: Fair Value & Quality
Both stocks run through our 21 valuation models. Here is how Williams Companies (WMB) and Marathon Petroleum (MPC) compare, as of Jul 23, 2026.
Ranked within their sector
Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.
Williams Companies · Energy
Marathon Petroleum · Energy
Bottom line
As of Jul 23, 2026, Fair Value Calculator sees Marathon Petroleum as the more attractively valued of the two: Williams Companies trades at $73.36 versus a fair value of $14.68 (-80%), while Marathon Petroleum trades at $320 versus $136 (-58%).
Marathon Petroleum has the higher quality score (71/100).
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A model-based valuation snapshot from 21 models, not a recommendation and not financial advice. Values change with price and fundamentals; the date shown above applies.