MPC (Marathon Petroleum) Cyclically Adjusted PB Ratio: (As of Aug. 05, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

MPC Marathon Petroleum Corp MPC
56 GF Score
Price $297.75
GF Value $213.41
Valuation Significantly Overvalued
! 6 Warning Signs
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What is Marathon Petroleum Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Marathon Petroleum  (NYSE:MPC) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Marathon Petroleum Cyclically Adjusted PB Ratio Related Terms


Marathon Petroleum Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Marathon Petroleum's Cyclically Adjusted PB 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.

Marathon Petroleum Cyclically Adjusted PB Ratio Chart

Marathon Petroleum Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.95 3.04 3.40 2.88 3.11

Marathon Petroleum Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 3.27 3.72 3.11 4.54 0.00

MPC vs VLO, PSX, DINO: Cyclically Adjusted PB Ratio Comparison

For the Oil & Gas Refining & Marketing subindustry, Marathon Petroleum's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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 Cyclically Adjusted PB Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, Marathon Petroleum's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Marathon Petroleum's Cyclically Adjusted PB Ratio falls into.


MPC
56GF Score
Marathon Petroleum Corp MPC
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Marathon Petroleum Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Marathon Petroleum's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Marathon Petroleum's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=65.346/333.9520*333.9520
=65.346

Current CPI (Jun. 2026) = 333.9520.

Marathon Petroleum Quarterly Data

Book Value per Share CPI Adj_Book
201609 25.369 241.428 35.091
201612 25.676 241.432 35.515
201703 25.183 243.801 34.495
201706 24.972 244.955 34.045
201709 25.964 246.819 35.130
201712 28.874 246.524 39.114
201803 32.094 249.554 42.948
201806 32.803 251.989 43.473
201809 33.627 252.439 44.485
201812 51.728 251.233 68.760
201903 50.901 254.202 66.870
201906 51.829 256.143 67.573
201909 51.905 256.759 67.510
201912 51.917 256.974 67.469
202003 37.058 258.115 47.946
202006 36.525 257.797 47.315
202009 34.490 260.280 44.252
202012 34.100 260.474 43.719
202103 33.117 264.877 41.753
202106 45.331 271.696 55.718
202109 45.466 274.310 55.351
202112 45.261 278.802 54.214
202203 43.985 287.504 51.091
202206 51.279 296.311 57.793
202209 56.085 296.808 63.104
202212 61.046 296.797 68.688
202303 62.460 301.836 69.106
202306 63.491 305.109 69.493
202309 67.000 307.789 72.695
202312 66.315 306.746 72.197
202403 64.569 312.332 69.039
202406 62.534 314.175 66.470
202409 58.255 315.301 61.701
202412 56.155 315.605 59.419
202503 53.061 319.799 55.409
202506 54.684 322.561 56.615
202509 56.797 324.800 58.397
202512 58.771 324.054 60.566
202603 57.177 330.213 57.824
202606 65.346 333.952 65.346

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

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.

Is Marathon Petroleum (MPC) Overvalued in 2026?

Based on GuruFocus' analysis, Marathon Petroleum stock appears to be overvalued. The current stock price of $297.75 is trading 39.5% above its estimated GF Value™ of $213.41. GuruFocus considers Marathon Petroleum to be Significantly Overvalued.

Key valuation signals for MPC:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: $213.41 vs. price of $297.75 (39.5% above fair value)
  • GF Score™: 56/100 with 6 warning signs

No single metric tells the full story. See the MPC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Marathon Petroleum Business Description

Industry EnergyOil & Gas
Address 539 South Main Street, Findlay, OH, USA, 45840-3229
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.
56GF Score

Get the complete analysis for MPC

Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$297.75
Price
$213.41
GF Value