Martin Marietta Materials, Inc.

MLM Basic Materials · Building Materials
Delayed 15 min
Last close
$491.23
Oct 16, 2026
52-week range
$464.92 — $710.97
-31% from high
Market cap
34.9B
Diluted basis
Dividend yield
0.7%
P/E
31.9
Trailing
Verdict status · Oct 16, 2026

Not yet scored

Filing.fyi has not computed forensic scores for MLM yet. Scores appear after the company's next data refresh.

No verdict yet
RED DEEP Scores pending shown after the next data refresh
Composite Health
AI synthesis · written from this company's SEC filings · not investment advice

What the filing actually says.

AI · forensic preset

No forensic scores are on file for this synthesis, so the read below rests on the filed narrative, the reported revenue series and the risk-factor text, and it does not characterize earnings quality through any score. The most concrete number is the revenue trend. Reported revenue moved from $4.24 billion in 2018 to a peak of $6.78 billion in 2023, then declined to $6.54 billion in 2024 and $6.15 billion in 2025. The 2025 figure is about 9.3% below 2023. Readers may want to look at the 10-K's discontinued operations disclosures, because the filing says the Midlothian cement plant and Texas ready mixed concrete assets are classified as held for sale and that historical information has been recast. Whether each annual revenue figure sits on the same basis is not something this data settles, so cross-year comparisons need checking against the notes. The business mix is also worth weighing. Aggregates generated 88% of 2025 reportable segment gross profit, and 37% of 2025 aggregates shipments went to highway and other public infrastructure projects, which the filing describes as the historically largest end-use market. The filing also notes that public infrastructure demand has been affected by federal and state budget challenges and uncertainty over highway funding. The Specialties business sells some products overseas and, according to the risk factors, tries to mitigate currency exposure by denominating sales in U.S. dollars. Readers may want to look at how the company's acquisition history, including the $2.05 billion BWI Southeast purchase, connects to the goodwill impairment language in the risk factors.

Catalyst.Martin Marietta's 2025 annual report describes an aggregates-led business in which aggregates generated 88% of 2025 reportable segment gross profit. Recent moves reshape the portfolio: the company acquired Premier Magnesia in July 2025, the largest U.S. producer of natural magnesite and magnesium sulfate, and signed an August 2025 agreement with QUIKRETE to exchange its Midlothian cement plant and Texas ready mixed concrete assets for aggregates facilities in Virginia, Missouri, Kansas and Vancouver. Earlier, it sold its South Texas cement business to CRH for $2.1 billion in February 2024 and bought 20 Southeast aggregates operations for $2.05 billion in April 2024. Reported revenue, however, fell from $6.54 billion in 2024 to $6.15 billion in 2025, a decline of about 6.0%.

Hidden risk.The 10-Q risk factors point to tensions a casual reader might pass over. Management warns that goodwill and intangible assets, which follow many acquisitions, could be impaired if construction growth falls below assumptions. Energy is described as one of the company's largest expenses, and cost increases it cannot pass through to customers have historically hurt results. The paving business carries fixed-price contracts with liquidated damages for late completion, and the filing says these operations typically earn lower margins than aggregates. Pension contributions could also rise if plan returns fall. Finally, the ten-largest revenue states accounted for 76% of Building Materials revenues from continuing operations in 2025, concentrating exposure geographically.

Market signals · from trading data, not filings

What traders are betting.

The scores above come from what MLM reports to the SEC. These readings come from how traders are positioned in its shares. They change quickly, they can be wrong, and they are not part of the verdict.
Short interest Shares sold short · reported twice a month
5.0%
of the shares available to trade
Moderate
0%5% · 10% · 20%25%+

The metric

Shares that traders have borrowed and sold, betting the price will fall, and not yet bought back. Brokers report the total to FINRA twice a month. Days to cover divides it by the shares that change hands on a typical day.

Shares sold short
3.2M
Change since Aug 31
+17.8%
Days to cover
3.6

What it tells us

A noticeable minority of traders is betting that MLM shares will fall.

Short sellers added to their bets: shares sold short grew 17.8% since the Aug 31 report.

At normal trading volume, short sellers would need about 3.6 days to buy back every borrowed share.

How investors use it

  • Squeeze watching. Some aggressive traders seek out heavily shorted stocks, betting that good news will force short sellers to buy back shares and push the price higher.
  • Hedging. Funds short one company to offset risk in another, often owning a stronger business and shorting a weaker one in the same industry.
  • Timing. Chart-based traders pair rising short interest with price patterns, such as a break below a level where buyers used to step in, to decide when to enter or exit.
  • Warning sign. Some owners treat a sharp rise in short interest as a red flag and respond by tightening stop-loss orders or holding smaller positions.

Lesson: short interest, explained →

Short-interest report for Sep 30, 2026, via Yahoo Finance. Reports come out about a week and a half after that date.

SEC filings · last 12 months

Quarterly report

The quarterly report (10-Q) and current reports (8-K) Martin Marietta Materials filed in the last 12 months, each linked to the original document on SEC EDGAR.

  • Sep 16, 2026
    8-K
    Current reportItem 1.01: Signed a material agreement
    ★ Curriculum-relevant
    EDGAR →
  • Aug 24, 2026
    8-K
    Current reportItem 1.01: Signed a material agreement; Item 2.01: Completed an acquisition or sale of assets; Item 3.02: Unregistered sale of shares; Item 5.02: Departure/appointment of officers or directors; Item 7
    ★ Curriculum-relevant
    EDGAR →
  • Aug 18, 2026
    8-K
    Current reportItem 1.01: Signed a material agreement; Item 1.02: Ended a material agreement; Item 2.03: New debt or other financial obligation
    ★ Curriculum-relevant
    EDGAR →
  • Aug 14, 2026
    8-K
    Current reportItem 1.01: Signed a material agreement; Item 2.03: New debt or other financial obligation; Item 8.01: Other events
    ★ Curriculum-relevant
    EDGAR →
  • Aug 12, 2026
    8-K
    Current reportItem 1.01: Signed a material agreement; Item 7.01: Regulation FD disclosure (investor materials)
    ★ Curriculum-relevant
    EDGAR →
  • Aug 10, 2026
    8-K
    Current reportItem 8.01: Other events0
    EDGAR →
  • Aug 5, 2026
    8-K
    Current reportItem 8.01: Other events0
    EDGAR →
  • Aug 4, 2026
    8-K
    Current reportItem 5.02: Departure/appointment of officers or directors
    ★ Curriculum-relevant
    EDGAR →
  • Jul 30, 2026
    10-Q
    Quarterly report0
    EDGAR →
  • Jul 30, 2026
    8-K
    Current reportItem 2.02: Results of operations (earnings); Item 7.01: Regulation FD disclosure (investor materials)0
    EDGAR →
  • Jul 15, 2026
    8-K
    Current reportItem 1.01: Signed a material agreement; Item 2.03: New debt or other financial obligation
    ★ Curriculum-relevant
    EDGAR →
  • Apr 30, 2026
    8-K
    Current report (2026-04-30)Item 2.02: Results of operations (earnings); Item 7.01: Regulation FD disclosure (investor materials)0
    EDGAR →
Further reading · curated for this filing

If this case caught your eye

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Financial Shenanigans

Howard M. Schilit

Schilit's framework for the seven shenanigan types is the standard reference for the kind of MD&A pattern-matching this site does.

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The Interpretation of Financial Statements

Benjamin Graham

The original — and still the clearest — explanation of why working-capital trends matter more than headline earnings.

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Quality of Earnings

Thornton L. O'glove

Out of print, expensive, worth it. The chapter on receivables-vs-revenue divergence applies almost word-for-word to most distressed filings.

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