MLM (Martin Marietta Materials) Moat Score: 7/10 (As of Jul. 21, 2026)

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MLM Martin Marietta Materials Inc MLM
92 GF Score
Price $547.33
GF Value $658.68
Valuation Modestly Undervalued
! 3 Warning Signs
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What is Martin Marietta Materials Moat Score?

Martin Marietta Materials MLM -1.14% 92 Moat Score is 7 as of Jul. 21, 2026. GuruFocus rates MLM with a GF Score™ of 92/100 and a GF Value™ of $658.68 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 433 Building Materials companies, Martin Marietta Materials ranks better than 99.77% on this metric.

Martin Marietta Materials has the Moat Score of 7, which implies that the company might have Wide Moat - Entry-level wide moat, clearly possessing durable advantages.

Martin Marietta Materials has Wide Moat: Martin Marietta has a wide moat due to its durable cost advantages, significant regulatory barriers, and strong pricing power in the construction materials industry. Its extensive distribution network and market leadership further solidify its competitive position.

Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more.

The company's Moat Score is based on these criteria:

1. Market leadership and sustainable market share
2. Network effects and significant customer switching costs
3. Valuable intellectual property and patents
4. Strong brand strength and deep customer loyalty
5. Durable cost advantages (e.g., economies of scale, proprietary technology)
6. Significant regulatory barriers and exclusive licenses
7. Superior distribution network
8. Strong and sustainable pricing power
9. Consistent and impactful innovation and R&D capabilities

Based on the research, GuruFocus believes Martin Marietta Materials might have Wide Moat - Entry-level wide moat, clearly possessing durable advantages.

Martin Marietta Materials  (NYSE:MLM) Moat Score Explanation

The Moat Score ranges from 0 to 10, with 10 as the highest. GuruFocus divided Moat Score into following 8 categories:

Moat Score Moat Level
10Wide Moat - Exceptionally dominant and durable wide moat
8 - 9Wide Moat - Clear and robust wide moat
7Wide Moat - Entry-level wide moat, clearly possessing durable advantages
6Narrow Moat - Strong narrow moat, clearly distinguishable but not wide
5Narrow Moat - Solid narrow moat
4Narrow Moat - Discernible but modest moat
1 - 3No Moat - Very weak/transient advantages
0No Moat - No discernible moat

Martin Marietta Materials Moat Score Related Terms

MLM vs VMC, JHX, EXP: Moat Score Comparison

For the Building Materials subindustry, Martin Marietta Materials's Moat Score, along with its competitors' market caps and Moat Score 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 Moat Score vs Building Materials Industry

For the Building Materials industry and Basic Materials sector, Martin Marietta Materials's Moat Score distribution charts can be found below:

* The bar in red indicates where Martin Marietta Materials's Moat Score falls into.


MLM
92GF Score
Martin Marietta Materials Inc MLM
Moat Score is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about Moat Score →
What does a Moat Score of 7 mean?
Martin Marietta Materials (MLM) has a Moat Score of 7 as of Jul. 21, 2026. Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more. According to the industry distribution chart, Martin Marietta Materials ranks #1 out of 433 companies in the Building Materials industry, placing it in the top 0.2%.
Is Martin Marietta Materials' Moat Score too high?
Martin Marietta Materials' current Moat Score is 7. Based on the distribution chart, Martin Marietta Materials ranks #1 out of 433 companies in the Building Materials industry, which is in the top quartile — a strong position relative to peers. Overall, Martin Marietta Materials has a GF Score™ of 92/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Martin Marietta Materials' Moat Score compare to VMC and JHX?
According to the Building Materials industry distribution chart, Martin Marietta Materials ranks #1 out of 433 companies for Moat Score. This places Martin Marietta Materials in the top 0% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Moat Score for a Building Materials company?
A good Moat Score depends on the Building Materials industry context. However, Moat Score 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 Moat Score mean?
A high Moat Score can signal that a stock is expensive relative to its fundamentals. Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more. Martin Marietta Materials's current Moat Score is 7. 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 $658.68, compared to a current price of $547.33 — trading 16.9% below its estimated fair value. The current Moat Score is 7. Martin Marietta Materials' overall GF Score™ is 92/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Moat Score calculated?
Moat Score is calculated from a company's financial statements. For Martin Marietta Materials (MLM), the current Moat Score is 7 as of Jul. 21, 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 $547.33 is trading 16.9% below its estimated GF Value™ of $658.68. GuruFocus considers Martin Marietta Materials to be Modestly Undervalued.

Key valuation signals for MLM:

  • Moat Score: 7
  • GF Value™: $658.68 vs. price of $547.33 (16.9% below fair value)
  • GF Score™: 92/100 with 3 warning signs

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 Business Description

Address 4123 Parklake Avenue, Raleigh, NC, USA, 27612
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.
92GF Score

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Moat Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$547.33
Price
$658.68
GF Value