Marathon PetroleumMEX:MPC 64 Graham Number is MXN1,242.62 as of Mar. 2026, which is 100% below its 10-year median of 1.31. GuruFocus rates MEX:MPC with a GF Score™ of 64/100 and a GF Value™ of MXN3,667.31 (Modestly Overvalued). The stock has 6 warning signs investors should review. Among 605 Oil & Gas companies, Marathon Petroleum ranks worse than 92.56% on this metric.
Graham Number is a figure that measures a stock's fundamental value by taking into account the company's earnings per share and book value per share. The Graham number is the upper bound of the price range that a defensive investor should pay for the stock. According to the theory, any stock price below the Graham number is considered undervalued, and thus worth investing in.
As of today (2026-07-08), the stock price of Marathon Petroleum is MXN4680.00. Marathon Petroleum's graham number for the quarter that ended in Mar. 2026 was MXN1,242.62. Therefore, Marathon Petroleum's Price to Graham Number ratio for today is 3.77.
The historical rank and industry rank for Marathon Petroleum's Graham Number or its related term are showing as below:
MEX:MPC'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.55 Med: 1.31 Max: 4.51
Current: 3.9
During the past 13 years, the highest Price to Graham Number ratio of Marathon Petroleum was 4.51. The lowest was 0.55. And the median was 1.31.
MEX:MPC's Price-to-Graham-Number is ranked worse than 92.56% of 605
companies
in the Oil & Gas industry
Industry Median: 1.05
vs MEX:MPC: 3.90
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
Marathon Petroleum (MEX:MPC) Graham Number Explanation
Ben Graham actually did not publish a formula like this. But he wrote in The Intelligent Investor (1948 version) regarding to the criteria for purchases:
Current price should not be more than 15 times average earnings of the past three years.
Current price should not be more than 1.5 times the book value last reported. However, a multiplier of earnings below 15 could justify a correspondingly higher multiplier of assets. As a rule of thumb we suggest that the product of the multiplier times the ratio of price to book value should not exceed 22.5. (This figure corresponds to 15 times earnings and 1.5 times book value. It would admit an issue selling at only 9 times earnings and 2.5 times asset value, etc.)
Unlike valuation methods such as DCF or Discounted Earnings, the Graham number does not take growth into the valuation. Unlike the valuation methods based on book value alone, it takes into account the earnings power. Therefore, the Graham Number is a combination of asset valuation and earnings power valuation.
In general, the Graham number is a very conservative way of valuing a stock. It cannot be applied to companies with negative book values.
Marathon Petroleum's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
4680.00
/
1,242.62
=
3.77
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Be Aware
Please keep these in mind:
1. Graham Number does not take growth into account. Therefore it underestimates the values of the companies that have good earnings growth. We feel that if the earnings per share grows more than 10% a year, Graham Number underestimates the value.
2. Graham Number punishes the companies that have temporarily low earnings. Therefore, an average of earnings makes more sense in the calculation of Graham Number.
3. Graham Numbers underestimates companies that are light with book.
Marathon Petroleum Graham Number Related Terms
Marathon Petroleum Graham Number Historical Data
* Premium members only.
The historical data trend for Marathon Petroleum's Graham Number can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
MEX:MPC vs VLO, PSX, SUN: Graham Number Comparison
For the Oil & Gas Refining & Marketing subindustry, Marathon Petroleum's Price-to-Graham-Number, along with its competitors' market caps and Price-to-Graham-Number data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Marathon Petroleum Price-to-Graham-Number vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Marathon Petroleum's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Marathon Petroleum's Price-to-Graham-Number falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Marathon Petroleum (MEX:MPC) has a Graham Number of MXN1,242.62 as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Marathon Petroleum and its competitors. This is 94756% above median its historical median of 1.31. Over the past decade, Marathon Petroleum's Graham Number has ranged from 0.55 to 4.51. According to the industry distribution chart, Marathon Petroleum ranks #560 out of 605 companies in the Oil & Gas industry, placing it in the top 92.6%.
Is Marathon Petroleum's Graham Number too high?
Marathon Petroleum's current Graham Number of MXN1,242.62 is 94756% above median its 10-year median of 1.31. Over the past 10 years, this metric has ranged from a low of 0.55 to a high of 4.51. Based on the distribution chart, Marathon Petroleum ranks #560 out of 605 companies in the Oil & Gas industry, which is in the bottom quartile relative to peers. Overall, Marathon Petroleum has a GF Score™ of 64/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Marathon Petroleum's Graham Number compare to VLO and PSX?
According to the Oil & Gas industry distribution chart, Marathon Petroleum ranks #560 out of 605 companies for Graham Number. This places Marathon Petroleum in the lower half of its industry. The industry median Graham Number is 1.05. Historically, Marathon Petroleum's own Graham Number has ranged from 0.55 to 4.51 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Graham Number for an Oil & Gas company?
The median Graham Number among Oil & Gas companies is 1.05, based on 605 companies in the industry. Companies in the top quartile (top 25%) have a Graham Number significantly above this median, while those in the bottom quartile fall well below. However, Graham Number should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Graham Number mean?
A high Graham Number can signal that a stock is expensive relative to its fundamentals. The Graham Number values a company based on its per-share earnings and book value. View historical data on Marathon Petroleum and its competitors. For the Oil & Gas industry, the median Graham Number is 1.05 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Marathon Petroleum's current Graham Number is MXN1,242.62, which is 94756% above median its own 10-year median of 1.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Marathon Petroleum stock overvalued right now?
Based on GuruFocus' analysis, Marathon Petroleum (MEX:MPC) is currently considered Modestly Overvalued. The stock's GF Value™ is MXN3,667.31, compared to a current price of MXN4,680.00 — trading 27.6% above its estimated fair value. The current Graham Number is MXN1,242.62, which is 94756% above median its 10-year median of 1.31. Marathon Petroleum's overall GF Score™ is 64/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Graham Number calculated?
Graham Number is calculated from a company's financial statements. For Marathon Petroleum (MEX:MPC), the current Graham Number is MXN1,242.62 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Marathon Petroleum (MEX:MPC) Overvalued in 2026?
Based on GuruFocus' analysis, Marathon Petroleum stock appears to be overvalued.
The current stock price of MXN4,680.00 is trading 27.6% above its estimated GF Value™ of MXN3,667.31.
GuruFocus considers Marathon Petroleum to be Modestly Overvalued.
Key valuation signals for MEX:MPC:
Graham Number: MXN1,242.62 (94756% above median its 10-year median of 1.31)
GF Value™: MXN3,667.31 vs. price of MXN4,680.00 (27.6% above fair value)
No single metric tells the full story. See the MEX:MPC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Marathon Petroleum is a leading integrated downstream and midstream energy company that operates 13 refineries in the Gulf Coast, Mid-Continent, and West Coast regions of the United States with an aggregate crude oil refining capacity of 3.0 million barrels per day. The company is one of the largest producers of renewable diesel in the US; its Dickinson, North Dakota facility has the capacity to produce 184 million gallons per year, and its Martinez, California, joint venture facility (a 50/50 partnership with Neste) reached its full capacity of 730 million gallons per year in late 2024. Marathon also owns the general partner and approximately 64% of MPLX LP, a large-cap master limited partnership that owns and operates midstream energy infrastructure and logistics assets.
64GF Score
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