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Martin Marietta MaterialsMLM +1.91%89 Shiller PE Ratio is 28.65 as of Aug. 08, 2026, which is 35% below its 10-year median of 44.35. GuruFocus rates MLM with a GF Score™ of 89/100 and a GF Value™ of $662.77 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 256 Building Materials companies, Martin Marietta Materials ranks worse than 75.39% on this metric.
The historical rank and industry rank for Martin Marietta Materials's Shiller PE Ratio or its related term are showing as below:
MLM'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 27.42 Med: 44.35 Max: 66.24
Current: 28.65
During the past years, Martin Marietta Materials's highest Shiller PE Ratio was 66.24. The lowest was 27.42. And the median was 44.35.
MLM's Shiller PE Ratio is ranked worse than 75.39% of 256
companies
in the Building Materials industry
Industry Median: 14.97
vs MLM: 28.65
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.
Martin Marietta Materials's adjusted earnings per share data for the three months ended in Jun. 2026 was $4.170. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $19.15 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Martin Marietta Materials (NYSE:MLM) Shiller PE Ratio Explanation
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.
Martin Marietta Materials Shiller PE Ratio Related Terms
Martin Marietta Materials Shiller PE Ratio Historical Data
* 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.
For the Building Materials subindustry, Martin Marietta Materials'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.
Martin Marietta Materials Shiller PE Ratio vs Building Materials Industry
For the Building Materials industry and Basic Materials sector, Martin Marietta Materials's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Martin Marietta Materials's Shiller PE Ratio falls into.
Martin Marietta Materials Shiller PE Ratio Calculation
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.
* 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.
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.
Martin Marietta Materials (MLM) has a Shiller PE Ratio of 28.65 as of Aug. 08, 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 Martin Marietta Materials and its competitors. This is 35% below median its historical median of 44.35. Over the past decade, Martin Marietta Materials' Shiller PE Ratio has ranged from 27.42 to 66.24. According to the industry distribution chart, Martin Marietta Materials ranks #193 out of 256 companies in the Building Materials industry, placing it in the top 75.4%.
Is Martin Marietta Materials' Shiller PE Ratio too high?
Martin Marietta Materials' current Shiller PE Ratio of 28.65 is 35% below median its 10-year median of 44.35. Over the past 10 years, this metric has ranged from a low of 27.42 to a high of 66.24. The Building Materials industry median Shiller PE Ratio is 14.97. Martin Marietta Materials' value of 28.65 is 91.4% above this industry median. Based on the distribution chart, Martin Marietta Materials ranks #193 out of 256 companies in the Building Materials industry, which is in the bottom quartile relative to peers. Overall, Martin Marietta Materials has a GF Score™ of 89/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Martin Marietta Materials' Shiller PE Ratio compare to VMC and JHX?
According to the Building Materials industry distribution chart, Martin Marietta Materials ranks #193 out of 256 companies for Shiller PE Ratio. This places Martin Marietta Materials in the lower half of its industry. The industry median Shiller PE Ratio is 14.97. Martin Marietta Materials' value of 28.65 is 91.4% above this benchmark. Historically, Martin Marietta Materials' own Shiller PE Ratio has ranged from 27.42 to 66.24 over the past decade. While the company's 10-year median is 44.35 vs. the industry median of 14.97, Martin Marietta Materials 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 a Building Materials company?
The median Shiller PE Ratio among Building Materials companies is 14.97, based on 256 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. Martin Marietta Materials's current Shiller PE Ratio of 28.65 is 91.4% 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 Martin Marietta Materials and its competitors. For the Building Materials industry, the median Shiller PE Ratio is 14.97 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Martin Marietta Materials's current Shiller PE Ratio is 28.65, which is 35% below median its own 10-year median of 44.35. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Martin Marietta Materials stock overvalued right now?
Based on GuruFocus' analysis, Martin Marietta Materials (MLM) is currently considered Modestly Undervalued. The stock's GF Value™ is $662.77, compared to a current price of $548.57 — trading 17.2% below its estimated fair value. The current Shiller PE Ratio is 28.65, which is 35% below median its 10-year median of 44.35 and 91.4% above the Building Materials industry median of 14.97. Martin Marietta Materials' overall GF Score™ is 89/100 with 3 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 Martin Marietta Materials (MLM), the current Shiller PE Ratio is 28.65 as of Aug. 08, 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 Martin Marietta Materials (MLM) Overvalued in 2026?
Based on GuruFocus' analysis, Martin Marietta Materials stock appears to be undervalued.
The current stock price of $548.57 is trading 17.2% below its estimated GF Value™ of $662.77.
GuruFocus considers Martin Marietta Materials to be Modestly Undervalued.
Key valuation signals for MLM:
Shiller PE Ratio: 28.65 (35% below median its 10-year median of 44.35)
GF Value™: $662.77 vs. price of $548.57 (17.2% below fair value)
Industry Position: 91.4% above the Building Materials median (#193 of 256)
No single metric tells the full story. See the MLM stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Martin Marietta Materials is one of the United States' largest producer of construction aggregates (crushed stone, sand, and gravel). In 2024, Martin Marietta sold 191 million tons of aggregates. Martin Marietta's most important markets include Texas, North Carolina, Colorado, California, and Georgia, accounting for most of its sales. The company also uses its aggregates in its asphalt and ready-mixed concrete businesses. Martin's magnesia specialties business produces magnesia-based chemical products and dolomitic lime.
89GF Score
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