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Martin Marietta MaterialsMIL:1MLM 92 Days Inventory is 98.77 as of Mar. 2026, which is 41% above its 10-year median of 69.88. GuruFocus rates MIL:1MLM with a GF Score™ of 92/100 and a GF Value™ of €653.58. The stock has 3 warning signs investors should review. Among 392 Building Materials companies, Martin Marietta Materials ranks better than 50.26% on this metric.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Martin Marietta Materials's Inventory Turnover for the
three
months ended in Mar. 2026 was 0.92.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Martin Marietta Materials's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.84.
Martin Marietta Materials (MIL:1MLM) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
Martin Marietta Materials's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Martin Marietta Materials's Inventory to Revenue for the
three
months ended in Mar. 2026 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.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
Martin Marietta Materials Days Inventory Related Terms
Martin Marietta Materials Days Inventory 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.
MIL:1MLM vs VMC, JHX, EXP: Days Inventory Comparison
For the Building Materials subindustry, Martin Marietta Materials's Days Inventory, along with its competitors' market caps and Days Inventory 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 Days Inventory vs Building Materials Industry
For the Building Materials industry and Basic Materials sector, Martin Marietta Materials's Days Inventory distribution charts can be found below:
* The bar in red indicates where Martin Marietta Materials's Days Inventory falls into.
* 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.
Martin Marietta Materials (MIL:1MLM) has a Days Inventory of 98.77 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Martin Marietta Materials and its competitors. This is 41% above median its historical median of 69.88. Over the past decade, Martin Marietta Materials' Days Inventory has ranged from 62.20 to 90.98. According to the industry distribution chart, Martin Marietta Materials ranks #195 out of 392 companies in the Building Materials industry, placing it in the top 49.7%.
Is Martin Marietta Materials' Days Inventory too high?
Martin Marietta Materials' current Days Inventory of 98.77 is 41% above median its 10-year median of 69.88. Over the past 10 years, this metric has ranged from a low of 62.20 to a high of 90.98. The Building Materials industry median Days Inventory is 90.21. Martin Marietta Materials' value of 98.77 is 9.5% above this industry median. Based on the distribution chart, Martin Marietta Materials ranks #195 out of 392 companies in the Building Materials industry, which is above the industry midpoint. Overall, Martin Marietta Materials has a GF Score™ of 92/100, reflecting its overall financial health beyond just this single metric.
How does Martin Marietta Materials' Days Inventory compare to VMC and JHX?
According to the Building Materials industry distribution chart, Martin Marietta Materials ranks #195 out of 392 companies for Days Inventory. This puts Martin Marietta Materials in the upper half of its industry. The industry median Days Inventory is 90.21. Martin Marietta Materials' value of 98.77 is 9.5% above this benchmark. Historically, Martin Marietta Materials' own Days Inventory has ranged from 62.20 to 90.98 over the past decade. While the company's 10-year median is 69.88 vs. the industry median of 90.21, 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 Days Inventory for a Building Materials company?
The median Days Inventory among Building Materials companies is 90.21, based on 392 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Martin Marietta Materials's current Days Inventory of 98.77 is 9.5% 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 Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Martin Marietta Materials and its competitors. For the Building Materials industry, the median Days Inventory is 90.21 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Martin Marietta Materials's current Days Inventory is 98.77, which is 41% above median its own 10-year median of 69.88. 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?
Martin Marietta Materials (MIL:1MLM) has a current Days Inventory of 98.77. The stock's GF Value™ is €653.58, compared to a current price of €549.50 — trading 15.9% below its estimated fair value. The current Days Inventory is 98.77, which is 41% above median its 10-year median of 69.88 and 9.5% above the Building Materials industry median of 90.21. 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 Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Martin Marietta Materials (MIL:1MLM), the current Days Inventory is 98.77 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 Martin Marietta Materials (MIL:1MLM) Overvalued in 2026?
Based on GuruFocus' analysis, Martin Marietta Materials stock appears to be undervalued.
The current stock price of €549.50 is trading 15.9% below its estimated GF Value™ of €653.58.
Key valuation signals for MIL:1MLM:
Days Inventory: 98.77 (41% above median its 10-year median of 69.88)
GF Value™: €653.58 vs. price of €549.50 (15.9% below fair value)
Industry Position: 9.5% above the Building Materials median (#195 of 392)
No single metric tells the full story. See the MIL:1MLM 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.
92GF Score
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