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MPLX LPMPLX +1.12%83 Shiller PE Ratio is 20.58 as of Aug. 15, 2026, which is 5% below its 10-year median of 21.69. GuruFocus rates MPLX with a GF Score™ of 83/100 and a GF Value™ of $54.21 (Fairly Valued). The stock has 7 warning signs investors should review. Among 437 Oil & Gas companies, MPLX LP ranks worse than 57.67% on this metric.
As of today (2026-08-15), MPLX LP's current share price is $59.48. MPLX LP's E10 for the quarter that ended in Jun. 2026 was $2.89. MPLX LP's Shiller PE Ratio for today is 20.58.
The historical rank and industry rank for MPLX LP's Shiller PE Ratio or its related term are showing as below:
MPLX'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 16.91 Med: 21.69 Max: 28.45
Current: 20.59
During the past years, MPLX LP's highest Shiller PE Ratio was 28.45. The lowest was 16.91. And the median was 21.69.
MPLX's Shiller PE Ratio is ranked worse than 57.67% of 437
companies
in the Oil & Gas industry
Industry Median: 17.37
vs MPLX: 20.59
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
MPLX LP's adjusted earnings per share data for the three months ended in Jun. 2026 was $1.060. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $2.89 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
MPLX LP Shiller PE Ratio Related Terms
MPLX LP Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for MPLX LP's Shiller PE 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.
MPLX vs OKE, TRGP, LNG: Shiller PE Ratio Comparison
For the Oil & Gas Midstream subindustry, MPLX LP's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.
MPLX LP Shiller PE Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, MPLX LP's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where MPLX LP's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
MPLX LP's Shiller PE Ratio for today is calculated as
* 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.
MPLX LP's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, MPLX LP's adjusted earnings per share data for the three months ended in Jun. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
MPLX LP (MPLX) has a Shiller PE Ratio of 20.58 as of Aug. 15, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on MPLX LP and its competitors. This is near median its historical median of 21.69. Over the past decade, MPLX LP's Shiller PE Ratio has ranged from 16.91 to 28.45. According to the industry distribution chart, MPLX LP ranks #252 out of 437 companies in the Oil & Gas industry, placing it in the top 57.7%.
Is MPLX LP's Shiller PE Ratio too high?
MPLX LP's current Shiller PE Ratio of 20.58 is near median its 10-year median of 21.69. Over the past 10 years, this metric has ranged from a low of 16.91 to a high of 28.45. The Oil & Gas industry median Shiller PE Ratio is 17.37. MPLX LP's value of 20.58 is 18.5% above this industry median. Based on the distribution chart, MPLX LP ranks #252 out of 437 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, MPLX LP has a GF Score™ of 83/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does MPLX LP's Shiller PE Ratio compare to OKE and TRGP?
According to the Oil & Gas industry distribution chart, MPLX LP ranks #252 out of 437 companies for Shiller PE Ratio. This places MPLX LP in the lower half of its industry. The industry median Shiller PE Ratio is 17.37. MPLX LP's value of 20.58 is 18.5% above this benchmark. Historically, MPLX LP's own Shiller PE Ratio has ranged from 16.91 to 28.45 over the past decade. While the company's 10-year median is 21.69 vs. the industry median of 17.37, MPLX LP has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for an Oil & Gas company?
The median Shiller PE Ratio among Oil & Gas companies is 17.37, based on 437 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. MPLX LP's current Shiller PE Ratio of 20.58 is 18.5% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on MPLX LP and its competitors. For the Oil & Gas industry, the median Shiller PE Ratio is 17.37 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. MPLX LP's current Shiller PE Ratio is 20.58, which is near median its own 10-year median of 21.69. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is MPLX LP stock overvalued right now?
Based on GuruFocus' analysis, MPLX LP (MPLX) is currently considered Fairly Valued. The stock's GF Value™ is $54.21, compared to a current price of $59.48 — trading 9.7% above its estimated fair value. The current Shiller PE Ratio is 20.58, which is near median its 10-year median of 21.69 and 18.5% above the Oil & Gas industry median of 17.37. MPLX LP's overall GF Score™ is 83/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For MPLX LP (MPLX), the current Shiller PE Ratio is 20.58 as of Aug. 15, 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 MPLX LP (MPLX) Overvalued in 2026?
Based on GuruFocus' analysis, MPLX LP stock appears to be overvalued.
The current stock price of $59.48 is trading 9.7% above its estimated GF Value™ of $54.21.
GuruFocus considers MPLX LP to be Fairly Valued.
Key valuation signals for MPLX:
Shiller PE Ratio: 20.58 (near median its 10-year median of 21.69)
GF Value™: $54.21 vs. price of $59.48 (9.7% above fair value)
Industry Position: 18.5% above the Oil & Gas median (#252 of 437)
No single metric tells the full story. See the MPLX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
MPLX is a partnership that owns pipelines and gathering and processing assets with extensive holdings in the Appalachian and Permian regions. The asset base is made up of crude oil and refined products assets dropped down from Marathon Petroleum, its sponsor, and natural gas and natural gas liquids gathering and processing assets that were purchased or built.
83GF Score
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