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Martin Marietta Materials Inc. (MLM) Stock Fundamental Analysis & AI Rating 2026

MLM NYSE Mining & Quarrying of Nonmetallic Minerals (No Fuels) NC CIK: 0000916076
Recently Updated • Analysis: May 6, 2026 • SEC Data: 2026-03-31
Combined AI Rating
BUY
76% Confidence
AGREEMENT
HOLD
68% Conf
BUY
84% Conf

📊 MLM Key Takeaways

Revenue: $1.4B
Net Margin: 111.1%
Free Cash Flow: $41.0M
Current Ratio: 2.28x
Debt/Equity: 0.47x
EPS: $25.06
AI Rating: HOLD with 68% confidence
Martin Marietta Materials Inc. (MLM) receives a BUY rating with 76% confidence from our AI fundamental analysis based on SEC 10-K filings. With revenue of $1.4B, net profit margin of 111.1%, and return on equity (ROE) of 13.4%, Martin Marietta Materials Inc. demonstrates strong fundamentals in the Materials sector. Below is our complete MLM stock analysis for 2026.

Is Martin Marietta Materials Inc. (MLM) a Good Investment?

Claude

MLM demonstrates solid revenue growth and reasonable operating margins, but operational fundamentals deteriorate significantly below the income statement. Sharply declining EPS despite 8.6% revenue growth indicates margin compression or structural challenges, while minimal free cash flow generation (3% FCF margin) raises concerns about the capital-intensive mining business's ability to service $5.3B debt and fund growth. The 111.1% net margin is unsustainable and reflects one-time gains masking underlying operational weakness.

ChatGPT

Martin Marietta Materials shows strong core fundamentals with healthy revenue growth, high operating and net margins, and robust free cash flow generation. The balance sheet is solid overall, with good liquidity and manageable leverage, which supports resilience in a capital-intensive business. The main caution is that profit growth has not kept pace with revenue, and the sharp EPS decline suggests weaker per-share growth quality or potential reporting distortions that need monitoring.

Why Buy Martin Marietta Materials Inc. Stock? MLM Key Strengths

Claude
  • + Revenue growth of 8.6% YoY demonstrates market demand in nonmetallic minerals sector
  • + Operating margin of 11.9% is reasonable for mining/quarrying industry fundamentals
  • + Strong liquidity position with 2.28x current ratio provides near-term financial flexibility
  • + Moderate leverage at 0.47x debt/equity ratio suggests manageable capital structure
  • + Solid ROE of 13.4% indicates reasonable equity returns despite challenges
ChatGPT
  • + Strong profitability, including 30.7% gross margin and 23.4% operating margin
  • + Robust cash generation with $1.78B operating cash flow and $978M free cash flow
  • + Healthy financial position with 3.57x current ratio and moderate 0.53x debt-to-equity

MLM Stock Risks: Martin Marietta Materials Inc. Investment Risks

Claude
  • ! EPS down 42.1% YoY despite 8.6% revenue growth signals severe margin compression and operational deterioration
  • ! Unsustainable 111.1% net margin indicates inflated one-time gains (asset sales/goodwill) masking true operating performance
  • ! Critical weakness: free cash flow of only $41M (3% of revenue) is inadequate for capital-intensive mining operations requiring $186M annual CapEx
  • ! Interest coverage of 2.9x is dangerously tight; limited cushion for rising rates, debt service, or business downturn
  • ! High absolute debt of $5.3B combined with weak FCF generation creates refinancing and financial flexibility risks
ChatGPT
  • ! Net income was flat despite 8.6% revenue growth, indicating margin or cost pressure below the top line
  • ! Diluted EPS fell 42.1% year over year, raising concern about per-share earnings quality or unusual items
  • ! Business remains capital-intensive, with $807M of capex and $5.32B of long-term debt

Key Metrics to Watch

Claude
  • * Free cash flow trend and FCF margin sustainability relative to capital expenditure needs
  • * EPS trajectory and drivers of YoY decline to assess if operational challenges persist
  • * Interest coverage and debt refinancing schedule given tight 2.9x ratio and $5.3B debt load
  • * Operating margin trends as indicator of pricing power and cost control in commodity business
  • * Cash conversion cycle and working capital efficiency for cash generation improvement
ChatGPT
  • * Operating margin and net income growth versus revenue growth
  • * Free cash flow after capital expenditures and interest coverage

Martin Marietta Materials Inc. (MLM) Financial Metrics & Key Ratios

Revenue
$1.4B
Net Income
$1.5B
EPS (Diluted)
$25.06
Free Cash Flow
$41.0M
Total Assets
$20.5B
Cash Position
$273.0M

💡 AI Analyst Insight

The relatively thin 3.0% FCF margin may limit capital allocation flexibility. Strong liquidity with a 2.28x current ratio provides a solid financial cushion.

MLM Profit Margin, ROE & Profitability Analysis

Gross Margin 22.8%
Operating Margin 11.9%
Net Margin 111.1%
ROE 13.4%
ROA 7.4%
FCF Margin 3.0%

MLM vs Materials Sector: How Martin Marietta Materials Inc. Compares

How Martin Marietta Materials Inc. compares to Materials sector averages

Net Margin
MLM 111.1%
vs
Sector Avg 10.0%
MLM Sector
ROE
MLM 13.4%
vs
Sector Avg 14.0%
MLM Sector
Current Ratio
MLM 2.3x
vs
Sector Avg 1.6x
MLM Sector
Debt/Equity
MLM 0.5x
vs
Sector Avg 0.6x
MLM Sector

Sector benchmarks are approximate industry averages. Actual sector performance may vary.

Is Martin Marietta Materials Inc. Stock Overvalued? MLM Valuation Analysis 2026

Based on fundamental analysis, Martin Marietta Materials Inc. has mixed fundamental signals relative to the Materials sector in 2026.

Return on Equity
13.4%
Sector avg: 14%
Net Profit Margin
111.1%
Sector avg: 10%
Revenue Growth
N/A
Year-over-year
Debt/Equity
0.47x
Sector avg: 0.6x

Note: This is a fundamental analysis based on SEC filings. For P/E ratio, price targets, and market-based valuation, consult financial data providers. This is not investment advice.

Martin Marietta Materials Inc. Balance Sheet: MLM Debt, Cash & Liquidity

Current Ratio
2.28x
Quick Ratio
1.11x
Debt/Equity
0.47x
Debt/Assets
44.9%
Interest Coverage
2.89x
Long-term Debt
$5.3B

MLM Revenue & Earnings Growth: 5-Year Financial Trend

MLM 5-year financial data: Year 2021: Revenue $5.4B, Net Income $611.9M, EPS $9.74. Year 2022: Revenue $6.2B, Net Income $721.0M, EPS $11.54. Year 2023: Revenue $6.8B, Net Income $702.5M, EPS $11.22. Year 2024: Revenue $6.8B, Net Income $867.0M, EPS $13.87. Year 2025: Revenue $6.2B, Net Income $1.2B, EPS $18.82.
Revenue
Net Income
EPS (right axis)

5-Year Trend Summary: Martin Marietta Materials Inc.'s revenue has grown significantly by 14% over the 5-year period, indicating strong business expansion. The most recent EPS of $18.82 reflects profitable operations.

MLM Revenue Growth, EPS Growth & YoY Performance

Revenue Growth
N/A
Year-over-year
Net Income Growth
N/A
Year-over-year
EPS Growth
N/A
Earnings per share
FCF Margin
3.0%
Free cash flow / Revenue

MLM Quarterly Earnings & Performance

Quarterly financial performance data for Martin Marietta Materials Inc. including revenue, net income, and earnings per share.
Quarter Revenue Net Income EPS
Q1 2026 $1.2B $116.0M $1.90
Q3 2025 $1.6B $363.0M $5.91
Q2 2025 $1.8B $294.0M $4.76
Q1 2025 $1.3B $116.0M $1.90
Q3 2024 $1.9B $363.0M $5.91
Q2 2024 $1.8B $294.0M $4.76
Q1 2024 $1.3B $121.0M $1.95
Q3 2023 $1.8B $295.3M $4.73

Data sourced from SEC EDGAR 10-Q quarterly filings. Figures may represent quarterly or cumulative values.

Martin Marietta Materials Inc. Dividends, Buybacks & Capital Allocation

Operating Cash Flow
$227.0M
Cash generated from operations
Stock Buybacks
$200.0M
Shares repurchased (TTM)
Capital Expenditures
$186.0M
Investment in assets
Dividends Paid
$51.0M
Returned to shareholders

MLM SEC Filings: Latest 10-K & 10-Q Analysis

Access official SEC EDGAR filings for Martin Marietta Materials Inc. (CIK: 0000916076)

📋 Recent SEC Filings

Date Form Document Action
May 5, 2026 4 xslF345X06/form4.xml View →
Apr 30, 2026 10-Q mlm-20260331.htm View →
Apr 30, 2026 8-K mlm-20260430.htm View →
Apr 27, 2026 8-K form8-k.htm View →
Apr 15, 2026 DEF 14A d28378ddef14a.htm View →

Frequently Asked Questions about MLM

What is the AI rating for MLM?

Martin Marietta Materials Inc. (MLM) has a Combined AI Rating of BUY from Claude (HOLD) and ChatGPT (BUY) with 76% combined confidence, based on fundamental analysis of SEC EDGAR filings.

What are MLM's key strengths?

Claude: Revenue growth of 8.6% YoY demonstrates market demand in nonmetallic minerals sector. Operating margin of 11.9% is reasonable for mining/quarrying industry fundamentals. ChatGPT: Strong profitability, including 30.7% gross margin and 23.4% operating margin. Robust cash generation with $1.78B operating cash flow and $978M free cash flow.

What are the risks of investing in MLM?

Claude: EPS down 42.1% YoY despite 8.6% revenue growth signals severe margin compression and operational deterioration. Unsustainable 111.1% net margin indicates inflated one-time gains (asset sales/goodwill) masking true operating performance. ChatGPT: Net income was flat despite 8.6% revenue growth, indicating margin or cost pressure below the top line. Diluted EPS fell 42.1% year over year, raising concern about per-share earnings quality or unusual items.

What is MLM's revenue and growth?

Martin Marietta Materials Inc. reported revenue of $1.4B.

Does MLM pay dividends?

Martin Marietta Materials Inc. pays dividends, with $51.0M distributed to shareholders in the trailing twelve months.

Where can I find MLM SEC filings?

Official SEC filings for Martin Marietta Materials Inc. (CIK: 0000916076) including 10-K, 10-Q, and 8-K reports are available on SEC EDGAR.

What is MLM's EPS?

Martin Marietta Materials Inc. has a diluted EPS of $25.06.

How is the AI analysis conducted?

Two independent AI systems — Claude (Anthropic) and ChatGPT (OpenAI) — analyze SEC EDGAR filings including 10-K annual reports and 10-Q quarterly reports. Each AI evaluates financial health, profitability ratios, balance sheet strength, and growth metrics. The combined rating reflects both perspectives for balanced insights.

Is MLM a good stock to buy right now?

Based on our AI fundamental analysis in May 2026, Martin Marietta Materials Inc. has a BUY rating with 76% confidence. The AI analysis suggests favorable fundamentals based on SEC filings. This is not investment advice.

Is MLM stock overvalued or undervalued?

Valuation metrics for MLM: ROE of 13.4% (sector avg: 14%), net margin of 111.1% (sector avg: 10%). Compare these metrics with sector averages to assess valuation.

Should I buy MLM stock in 2026?

Our dual AI analysis gives Martin Marietta Materials Inc. a combined BUY rating for 2026. Revenue is data pending, with profitability above sector average. Always conduct your own research.

What is MLM's free cash flow?

Martin Marietta Materials Inc.'s operating cash flow is $227.0M, with capital expenditures of $186.0M. FCF margin is 3.0%.

How does MLM compare to other Materials stocks?

Vs Materials sector averages: Net margin 111.1% (avg: 10%), ROE 13.4% (avg: 14%), current ratio 2.28 (avg: 1.6).

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Disclaimer: This analysis is generated by Claude AI (Anthropic) and ChatGPT (OpenAI) based on publicly available SEC EDGAR filings. It does not include stock price data and should not be considered financial advice. All fundamental data is sourced from SEC public domain filings. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
Data Source: SEC EDGAR | Analysis Date: May 6, 2026 | Data as of: 2026-03-31 | Powered by Claude AI