VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

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Stock Comparison

James Hardie Industries plc vs Martin Marietta Materials, Inc.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

James Hardie Industries plc

JHX · ASX

Market cap (USD)$17.8B

Gross margin (TTM)36.3%

Operating margin (TTM)13.6%

Net margin (TTM)4.7%

SectorMaterials

IndustryConstruction Materials

CountryIE

Data as of2025-12-28

Moat score

74/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into James Hardie Industries plc's moat claims, evidence, and risks.

View JHX analysis

Martin Marietta Materials, Inc.

MLM · NYSE

Market cap (USD)$37.9B

Gross margin (TTM)—

Operating margin (TTM)—

Net margin (TTM)—

SectorMaterials

IndustryConstruction Materials

CountryUS

Data as of2026-01-01

Moat score

78/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Martin Marietta Materials, Inc.'s moat claims, evidence, and risks.

View MLM analysis

Comparison highlights

Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 74 / 100 for James Hardie Industries plc).
Segment focus: James Hardie Industries plc has 4 segments (64.2% in Siding & Trim); Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group).
Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Moderate vs Strong.
Moat breadth: James Hardie Industries plc has 5 moat types across 2 domains; Martin Marietta Materials, Inc. has 4 across 2.

Primary market context

James Hardie Industries plc

Siding & Trim

Market

North American fiber cement exterior siding & trim (plus related exterior products)

Geography

North America (primarily U.S. and Canada)

Customer

Homebuilders, contractors, remodelers, dealers/distributors, and retailers

Role

Manufacturer / branded building-products supplier

Revenue share

64.2%

Martin Marietta Materials, Inc.

East Group

Market

Construction aggregates and asphalt products (crushed stone, sand & gravel; asphalt) in local/regional markets

Geography

United States (East/Southeast and adjacent regions)

Customer

Infrastructure agencies, construction contractors, and downstream materials producers (asphalt/ready-mix)

Role

Quarry/mining operator and building materials producer/distributor

Revenue share

52.4%

Side-by-side metrics

James Hardie Industries plc

Martin Marietta Materials, Inc.

Ticker / Exchange

JHX - ASX

MLM - NYSE

Market cap (USD)

$17.8B

$37.9B

Gross margin (TTM)

36.3%

n/a

Operating margin (TTM)

13.6%

n/a

Net margin (TTM)

4.7%

n/a

Sector

Materials

Industry

Construction Materials

HQ country

Primary segment

Siding & Trim

East Group

Market structure

Quasi-Monopoly

Oligopoly

Market share

88%-92% (estimated)

n/a

HHI estimate

n/a

Pricing power

Moderate

Strong

Moat score

74 / 100

78 / 100

Moat domains

Supply, Demand

Supply, Financial

Last update

2025-12-28

2026-01-01

Moat coverage

Shared moat types

Capex Knowhow Scale

James Hardie Industries plc strengths

Brand TrustLong Term ContractsOperational ExcellenceDistribution Control

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalBenchmark Pricing Power

Segment mix

James Hardie Industries plc segments

Full profile >

Siding & Trim

Quasi-Monopoly

64.2%

Deck, Rail & Accessories

Oligopoly

11.7%

Australia & New Zealand

Oligopoly

11.6%

Europe

Competitive

12.5%

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.