Raleigh, North Carolina-based Martin Marietta Materials, Inc. (MLM) is a natural resource-based building materials company that supplies aggregates and heavy-side building materials to the construction industry. With a market cap of $30 billion, the company also manufactures and markets magnesia-based products, including heat-resistant refractory products for the steel industry, chemical products for industrial and environmental uses, and dolomitic lime.
Shares of this leading supplier of aggregates and heavy building materials have underperformed the broader market over the past year. MLM has declined 10.6% over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 17%. In 2025, MLM stock is down 5.1%, compared to SPX’s 1.3% rise on a YTD basis.
