Martin Marietta Materials, Inc. (MLM) Stock Price & How to Invest

Martin Marietta Materials is the second-largest construction aggregates producer in the United States, behind Vulcan Materials. The aggregates business model is identical to Vulcan: heavy aggregates products with high transport costs create local pricing power within each quarry's service area. Martin Marietta operates hundreds of aggregates facilities across the US with concentration in Texas, Colorado, the Carolinas and other high-growth states, and 2026 added quarries in Virginia, Missouri, Kansas, British Columbia, Minnesota and along the I-70 corridor.

The company used to carry a meaningful Texas cement business from its 2014 Texas Industries (TXI) acquisition. That is gone: the South Texas cement operations went to Quikrete in 2024, and on February 23, 2026 Martin Marietta handed Quikrete its Midlothian cement plant, cement terminals and Texas ready-mixed concrete assets in exchange for aggregates operations producing about 20 million tons a year plus $450 million in cash. It still runs ready-mix and asphalt operations that integrate with aggregates, and a Specialties business (magnesia products, expanded by the July 2025 Premier Magnesia deal).

The biggest change came on August 21, 2026, when Martin Marietta closed its acquisition of Lhoist North America, the leading US producer of high-calcium lime, dolomitic lime and industrial minerals, for $13.5 billion: $7 billion in cash and about 10.95 million new shares. Lhoist's parent now holds roughly 15% of the company and a board seat. The current entity was formed through the 1990s separation from the Martin Marietta aerospace business that became part of Lockheed Martin. Headquartered in Raleigh, North Carolina. Ward Nye has been CEO since 2010; Michael Petro was promoted to CFO in August 2026.

Construction cycle volatility. Energy costs affect operating margins. Integration risk from four deals in under a year, and much higher debt (about $6.3 billion before the $7 billion Lhoist cash payment was fully reflected). Purchase accounting dents reported margins: aggregates gross profit per ton fell 17% in the second quarter, partly from a $52 million acquired-inventory charge. Lime ties part of the business to steel and industrial cycles. Reserve permitting is increasingly difficult. Analysts cut price targets through September and October 2026 (RBC to $530, Truist to $625, Citigroup to $610), and the stock trades about 30% below its 52-week high of $711.

24 analysts publish price targets on MLM, averaging $633.92 against a $500.84 price as of October 2026, or +26.6%. The published targets run from $496.00 to $800.00, a moderate spread, and the ratings split 16 buy, 8 hold, 0 sell. Over the last six months there have been 2 raises and 8 cuts among the published actions. A price target is what an analyst published on a date, not a prediction, and sell-side ratings skew positive across the whole market.

Read the full MLM forecast and price target for the target table, the recent rating actions by firm, and how the consensus has shifted.

We give no verdict on Martin Marietta Materials, Inc.. Both cases are real, which is why the question is contested at all, so here is the strongest version of each.

The case for buying. Federal infrastructure tailwind. The Infrastructure Investment and Jobs Act drives multi-year highway and infrastructure aggregates demand. The most optimistic published target, $800.00, assumes this works close to its best case.

The case against. Construction cycle volatility. The most pessimistic target, $496.00, is roughly what MLM is worth if this bites instead.

Read the full bull and bear case on MLM, including what would have to change to break either one. Walnut is not an investment adviser.

No. Martin Marietta Materials, Inc. (MLM) has not split its stock in the last 10 years. That is a statement about the window we check rather than about the company’s entire history, so an older split is possible. It also matters less than it once did: fractional shares mean a high price per share no longer keeps smaller investors out, which removed most of the practical reason to split.

A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Martin Marietta Materials, Inc.'s investor relations page or your broker.

• Revenue (TTM): ~$6.7 billion; Q2 2026 revenue up 21% year over year to a record ~$1.95 billion
• Operating margin: ~20%
• EPS (TTM): ~$15.42; forward ~$21.90
• P/E: ~32.5x trailing, ~23x forward
• Price to sales: ~5.3x
• Dividend yield: ~0.7% ($3.36 annual rate, ~22% payout)
• Market cap: ~$35.6 billion (share price ~$501)
• 2026 revenue guidance: $7.2-7.4 billion before Lhoist; adjusted EBITDA $2.36-2.5 billion

Martin Marietta trades at about 32.5x trailing and 23x forward earnings, a premium that has compressed as the shares fell about 21% this year while 2026 earnings are expected to dip about 9% before rebounding about 25% in 2027 with Lhoist included. The 24 covering analysts hold a buy consensus with a mean target near $634, though most have trimmed targets since late September.

If you want MLM exposure as part of a larger bundle rather than directly, these ETFs hold it meaningfully. Weights are approximate and refresh quarterly.

These are the investment theses MLM naturally fits into. Each links to a full theme guide listing every other stock that belongs and the ETFs commonly used as a passive proxy.

Other names that sit close to MLM: same theme, named as a direct competitor, or held beside it in the same funds. Each entry says which. Worth a look if you are thinking about diversification within a thesis rather than concentration on one ticker.

There are three common ways to get MLM exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it (XLB), which spreads the position across many companies. Or build it into a focused thematic portfolio, so MLM sits alongside other stocks that express the same thesis.

Walnut takes the portfolio route. Describe a thesis where MLM fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.

New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.

Martin Marietta (MLM) is an aggregates-led compounder whose regional pricing power rides the federal infrastructure cycle, typically paired with Vulcan as the US aggregates duopoly. After the 2026 deals it no longer owns cement, and it has added a much larger lime and specialty-minerals arm through Lhoist North America. In a portfolio it behaves as a premium-valued industrials and infrastructure holding sensitive to the construction cycle, energy costs, deal integration and higher debt, valued on durable pricing growth more than a high yield. The stock is down about 21% in 2026 as analysts trimmed targets ahead of the November 3 report.

Whether MLM is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is MLM a buy or a sell?, and where the stock could go from here in the MLM stock forecast.

For income investors, whether MLM pays a dividend and how the payout looks is covered in does MLM pay a dividend? And to weigh MLM against a peer, read the full side-by-side comparisons: MLM vs VMC and MLM vs NUE.