Martin Marietta Shipped 17% More Rock and Made 17% Less on Each Ton

Martin Marietta shipped 61.6 million tons of aggregates in the second quarter, a 17% increase, on record revenue of $1.947 billion. Gross profit per ton fell 17%, to $6.78.

Those two numbers moving in opposite directions by the same percentage is the whole quarter.

The volume was bought, not earned

Organic shipment growth was 2.3%. Everything above that came from acquisitions, principally NFM in the St. Louis metro, closed May 15, which adds more than 8 million tons of annual capacity. Core aggregates revenue was $1.5 billion, up 16%. Adjusted diluted EPS was $5.00, up 3%.

A 2.3% organic number is consistent with what the June Census construction spending data showed: public works and nonresidential are soft outside data centers, and aggregates demand tracks roadwork and site development more closely than almost any other material. The majors are growing by consolidating a fragmented industry, not because anyone is pouring more concrete.

Read the per-ton number carefully

Part of the 17% decline in gross profit per ton is a $52 million non-cash purchase accounting charge, which is the accounting artifact of writing acquired inventory up to fair value and then selling it. It’s real on the income statement and meaningless as an indicator of pricing power. Strip it and the margin compression is milder.

What it doesn’t tell you is where local prices go next. Consolidation at this scale usually firms up pricing once the purchase-accounting noise clears, because aggregates are a freight-constrained business and the number of independent pits within economic haul distance of a given job is what actually sets the price. When two of them become one, that changes.

The $13.5 billion deal is the bigger story

On June 27 Martin Marietta signed a definitive agreement to combine with LNA, the Lhoist Group lime and minerals subsidiary, in a transaction valued at roughly $13.5 billion. The company expects about $350 million in annualized cash flow improvements.

For estimators, the takeaway is procedural rather than dramatic. Lock aggregate escalation language now, on anything with a 2027 or 2028 delivery. Long-duration industrial jobs with heavy earthwork and concrete, like the Oklahoma primary aluminum smelter planned at the Tulsa Port of Inola, are exactly the projects where a quiet local price move after consolidation eats a bid contingency. Ask who owns the pit you’re hauling from, and ask whether they’ll still own it next year.

Additional coverage: Rock Products.

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