Is MLM a high-quality business?

AlphaMadera's AlphaQuality grade scores Martin Marietta Materials, Inc. on six pillars — profitability, capital efficiency, balance-sheet strength, growth durability, cash generation, and shareholder yield. The composite letter grade reflects how MLM compares to a Buffett-style quality bar.

What is Martin Marietta Materials, Inc.'s AlphaQuality grade?

AlphaQuality assigns a letter grade (A through F) to MLM based on a six-pillar quantitative model. The live page shows the composite grade plus each pillar's individual score with the underlying metrics.

What makes MLM a quality stock?

AlphaQuality looks at return on capital, free-cash-flow margins, debt-to-equity, revenue stability, dividend and buyback policy, and operating-margin trend. Stocks scoring well across all six pillars earn higher grades — the methodology favors compounders over cyclicals.

MLM - Martin Marietta Materials, Inc.

Price: -- -- | CONSENSUS: Buy DETAILS | PRICE TARGET: $697.40 DETAILS

AlphaQuality

Quantitative six-pillar business-quality grade

Cyclical & Capital-Intensive

AlphaQuality — archetype-weighted quantitative grade

B- 65.0 / 100 composite

Composite Grade

Composite of six pillars weighted for cyclical & capital-intensive businesses. Purely quantitative — no stock price or analyst input.

Profitability

Weight: 15%

B- 67.1

5yr Avg ROIC 8.6% 53/100
Operating Margin Trend +3.24 pp/yr 100/100

Capital Efficiency

Weight: 15%

B 71.7

5yr Avg ROE 11.7% 69/100
5yr Share-Count CAGR -0.8% 78/100

Growth Quality

Weight: 10%

B 72.4

5yr Revenue CAGR 4.9% 59/100
5yr EPS CAGR 13.8% 86/100
Revenue-Growth Years (5) 4/5 80/100

Cash Generation

Weight: 15%

B 71.4

5yr FCF Margin 11.7% 74/100
5yr FCF/NI Conversion 0.70x 68/100

Balance Sheet

Weight: 25%

B 69.9

Net Debt / EBITDA 2.44x 61/100
Interest Coverage (EBIT/Int) 6.62x 71/100
Altman Z-Score 3.25 84/100

Stability

Weight: 20%

D+ 43.6

EPS Volatility (σ/μ) 0.59 23/100
Piotroski F-Score 4 44/100
Negative-Revenue Years (5) 1/5 80/100

2 of 2 gurus held; 1 new buy; 1 added; 2 full exits.

Holders: 2 +1
Avg Δ position: +47.6%
New buys: 1
Full exits: 2

Cooperman sold -100%
Dalio sold -100%
Wood new

How this is calculated

AlphaQuality grades six pillars from 0-100 and weights each by archetype:

Profitability (15%) — 5yr Avg ROIC, Operating Margin Trend
Capital Efficiency (15%) — 5yr Avg ROE, 5yr Share-Count CAGR
Growth Quality (10%) — 5yr Revenue CAGR, 5yr EPS CAGR, Revenue-Growth Years (5)
Cash Generation (15%) — 5yr FCF Margin, 5yr FCF/NI Conversion
Balance Sheet (25%) — Net Debt / EBITDA, Interest Coverage (EBIT/Int), Altman Z-Score
Stability (20%) — EPS Volatility (σ/μ), Piotroski F-Score, Negative-Revenue Years (5)

We deliberately ignore stock price, analyst targets, and consensus ratings so the grade is suitable for backtesting forward returns. A minimum of 5 fiscal years of audited statements is required; distressed and highly leveraged infrastructure businesses are declared ungradable rather than forced into a numeric score.