With a market capitalization (market cap) of $31.4B — a measure of how much the company is worth — Martin Marietta Materials, Inc. is the 452nd most valuable company in Basic Materials as of August 18, 2026. Shares trade at $522.81, down +2.94% on the day.
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Martin Marietta Materials, Inc. functions as a company specializing in natural resource-derived building materials. This enterprise delivers a wide range of aggregates and other heavy construction components to the building industry, serving both domestic and international markets. Its product portfolio includes foundational raw materials like crushed stone, sand, and gravel, in addition to manufactured items such as ready-mix concrete, asphalt, and comprehensive paving solutions. These offerings are essential for infrastructure projects, commercial and residential developments, and various other sectors including railroads, agriculture, utilities, and environmental applications. Beyond its core construction offerings, Martin Marietta also produces magnesia-based chemicals, which are utilized in industrial, agricultural, and environmental contexts. The company further supplies dolomitic lime, primarily for steel manufacturing and soil stabilization. Its broader chemical products contribute to areas such as flame retardants, wastewater treatment, and pulp and paper production, among other environmental uses. Established in 1939, the firm's main office is situated in Raleigh, North Carolina.
Visit websiteAs of August 18, 2026, Martin Marietta Materials, Inc. (MLM) is worth $31.4B — this is its market capitalization, the total value of all its outstanding shares.
Martin Marietta Materials, Inc.’s market cap is $31.4B, which ranks it #452 among the most valuable companies in the Basic Materials sector tracked on MarketCapLens.
Martin Marietta Materials, Inc. (MLM) shares trade at $522.81, down 2.94% on the day, as of August 18, 2026.
Fundamentals are annual. Figures labeled with their fiscal year.
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Martin Marietta Materials, Inc. trades at a price-to-earnings (P/E) ratio of 27.7, based on its latest share price and annual earnings per share.