
Raleigh, North Carolina-based Martin Marietta Materials, Inc. (MLM), a natural resource-based building materials company, supplies aggregates and heavy-side building materials to the construction industry. With a market cap of $32.7 billion, the company also manufactures and markets magnesia-based products, including heat-resistant refractory products for the steel industry, chemical products for industrial and environmental uses, and dolomitic lime.
Companies worth $10 billion or more are generally described as “large-cap stocks,” and MLM perfectly fits that description, with its market cap exceeding this mark, underscoring its size, influence, and dominance within the building materials industry.