Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Richard Sloan from the University of Michigan was first to document what is referred to as the "accrual anomaly". His 1996 paper found that shares of companies with small or negative accruals vastly outperform (+10%) those of companies with large ones.
Marathon Petroleum's Sloan Ratio for the quarter that ended in Mar. 2026 was 1.37%.
As of Mar. 2026, Marathon Petroleum has a Sloan Ratio of 1.37%, indicating the company is in the safe zone and there is no funny business with accruals.
Marathon Petroleum (MEX:MPC) Sloan Ratio % Explanation
A former University of Michigan researcher, Richard Sloan's 1996 paper found that shares of companies with small or negative accruals vastly outperform (+10%) those of companies with large ones. In fact, for the 40-year period between 1962 and 2001, buying the lowest accrual companies and shorting the highest accrual companies resulted in an average annual compounded return of 18%, more than double the S&P 500's 7.4% annual return over the same period.
If the Sloan Ratio is between -10% and 10%, the company is in the safe zone and there is no funny business with accruals.
If the Sloan Ratio is less than between -25% and -10% on the negative side, and between 10% and 25% on the positive side, this is a warning stage of accrual build up.
If the Sloan Ratio is less than -25% or greater than 25%, and this ratio is consistent over several quarters or even years, be careful. Earnings are highly likely to be made up of accruals.
As of Mar. 2026, Marathon Petroleum has a Sloan Ratio of 1.37%, indicating the company is in the safe zone and there is no funny business with accruals.
Marathon Petroleum Sloan Ratio % Related Terms
Marathon Petroleum Sloan Ratio % Historical Data
* Premium members only.
The historical data trend for Marathon Petroleum's Sloan Ratio % 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: Sloan Ratio % Comparison
For the Oil & Gas Refining & Marketing subindustry, Marathon Petroleum's Sloan Ratio %, along with its competitors' market caps and Sloan Ratio % 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 Sloan Ratio % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Marathon Petroleum's Sloan Ratio % distribution charts can be found below:
* The bar in red indicates where Marathon Petroleum's Sloan Ratio % falls into.
Earnings contain a lot of non cash earnings which is called accruals. The Sloan ratio is a way to identify firms with low non-cash or accrual-derived earnings relative to their cash flow.
Marathon Petroleum's Sloan Ratio for the fiscal year that ended in Dec. 2025 is calculated as
Marathon Petroleum's Net Income for the trailing twelve months (TTM) ended in Mar. 2026 was 22896.307 (Jun. 2025 ) + 25131.554 (Sep. 2025 ) + 27638.75 (Dec. 2025 ) + 9214.71 (Mar. 2026 ) = MXN84,881 Mil.
Marathon Petroleum's Cash Flow from Operations for the trailing twelve months (TTM) ended in Mar. 2026 was 49690.259 (Jun. 2025 ) + 47860.018 (Sep. 2025 ) + 55259.493 (Dec. 2025 ) + 20214.657 (Mar. 2026 ) = MXN173,024 Mil.
Marathon Petroleum's Cash Flow from Investing for the trailing twelve months (TTM) ended in Mar. 2026 was -18339.641 (Jun. 2025 ) + -68900.815 (Sep. 2025 ) + -3853.22 (Dec. 2025 ) + -18880.237 (Mar. 2026 ) = MXN-109,974 Mil.
* 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 Sloan Ratio % of 1.37% as of Mar. 2026. Sloan ratio measures earnings quality based on the amount of accruals. View historical data on Marathon Petroleum and its competitors.
Is Marathon Petroleum's Sloan Ratio % too high?
Marathon Petroleum's current Sloan Ratio % is 1.37%. Overall, Marathon Petroleum has a GF Score™ of 61/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Marathon Petroleum's Sloan Ratio % compare to VLO and PSX?
Marathon Petroleum's Sloan Ratio % of 1.37% can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Sloan Ratio % for an Oil & Gas company?
A good Sloan Ratio % depends on the Oil & Gas industry context. However, Sloan Ratio % 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 Sloan Ratio % mean?
A high Sloan Ratio % can signal that a stock is expensive relative to its fundamentals. Sloan ratio measures earnings quality based on the amount of accruals. View historical data on Marathon Petroleum and its competitors. Marathon Petroleum's current Sloan Ratio % is 1.37%. 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 MXN3,852.85, compared to a current price of MXN4,680.00 — trading 21.5% above its estimated fair value. The current Sloan Ratio % is 1.37%. Marathon Petroleum's overall GF Score™ is 61/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Sloan Ratio % calculated?
Sloan Ratio % is calculated from a company's financial statements. For Marathon Petroleum (MEX:MPC), the current Sloan Ratio % is 1.37% 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 21.5% above its estimated GF Value™ of MXN3,852.85.
GuruFocus considers Marathon Petroleum to be Modestly Overvalued.
Key valuation signals for MEX:MPC:
Sloan Ratio %: 1.37%
GF Value™: MXN3,852.85 vs. price of MXN4,680.00 (21.5% 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.
61GF Score
Get the complete analysis for MEX:MPC
Sloan Ratio % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
MEX:MPC has been successfully added to your 
