Martin Marietta Materials (MLM) is Moving to Optimize Its Product Offerings

Diamond Hill Capital, an investment management company, released its “Large Cap Fund” third-quarter 2025 investor letter. A copy of the letter can be downloaded here. Markets continued their YTD rally in the third quarter of 2025, with the Russell 3000 Index gaining 8%, bringing the calendar-year returns to over 14%. The portfolio declined and underperformed the Russell 1000 Value Index in the quarter.  In addition, you can check the top 5 holdings of the fund to know its best picks in 2025.

In its third-quarter 2025 investor letter, Diamond Hill Large Cap Fund highlighted stocks such as Martin Marietta Materials, Inc. (NYSE:MLM). Martin Marietta Materials, Inc. (NYSE:MLM) is a building materials company that supplies aggregates and heavy-side building materials to the construction industry. The one-month return of Martin Marietta Materials, Inc. (NYSE:MLM) was -3.80%, and its shares lost 1.82% of their value over the last 52 weeks. On November 6, 2025, Martin Marietta Materials, Inc. (NYSE:MLM) stock closed at $608.33 per share, with a market capitalization of $36.687 billion.

Diamond Hill Large Cap Fund stated the following regarding Martin Marietta Materials, Inc. (NYSE:MLM) in its third quarter 2025 investor letter:

“Among our top individual contributors in Q3 were General Motors and Martin Marietta Materials, Inc. (NYSE:MLM). Heavy building materials supplier Martin Marietta is taking steps to optimize its portfolio of product offerings — including the upcoming divestiture of its Midlothian cement plant to Quikrete. As infrastructure and non-residential — and possibly housing — construction seem poised to improve in the period ahead, Martin Marietta should benefit from its competitive positioning as one of the US’s largest aggregates producers and distributors.”

Jim Cramer on Martin Marietta Materials (MLM): “Road Building Is Booming — This Is the One You Want!”

Martin Marietta Materials, Inc. (NYSE:MLM) is not on our list of 30 Most Popular Stocks Among Hedge Funds. According to our database, 64 hedge fund portfolios held Martin Marietta Materials, Inc. (NYSE:MLM) at the end of the second quarter, up from 58 in the previous quarter.  While we acknowledge the risk and potential of Martin Marietta Materials, Inc. (NYSE:MLM) as an investment, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and doing so within a shorter time frame. If you are looking for an AI stock that is more promising than Martin Marietta Materials, Inc. (NYSE:MLM) and that has 10,000% upside potential, check out our report about this cheapest AI stock.

In another article, we covered Martin Marietta Materials, Inc. (NYSE:MLM) and shared the list of stocks Jim Cramer discussed recently. Martin Marietta Materials, Inc. (NYSE:MLM) was a top contributor to Aristotle Capital Value Equity Strategy’s performance in Q3 2025. In addition, please check out our hedge fund investor letters Q3 2025 page for more investor letters from hedge funds and other leading investors.

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Disclosure: None. This article is originally published at Insider Monkey.