VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Monday, December 29, 2025

Stock Comparison

James Hardie Industries plc vs Merck & Co., 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)
SectorMaterials
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

Merck & Co., Inc.

MRK · New York Stock Exchange

Market cap (USD)$250.9B
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
71/ 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 Merck & Co., Inc.'s moat claims, evidence, and risks.

View MRK analysis

Comparison highlights

  • Moat score gap: James Hardie Industries plc leads (74 / 100 vs 71 / 100 for Merck & Co., Inc.).
  • Segment focus: James Hardie Industries plc has 4 segments (64.2% in Siding & Trim); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Quasi-Monopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: James Hardie Industries plc has 5 moat types across 2 domains; Merck & Co., Inc. has 5 across 3.

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%

Merck & Co., Inc.

Pharmaceutical

Market

Branded prescription pharmaceuticals & human vaccines

Geography

Global

Customer

Wholesalers/retailers, managed care and government payers, hospitals/clinics

Role

R&D-intensive innovator, manufacturer, and marketer

Revenue share

89.5%

Side-by-side metrics

James Hardie Industries plc
Merck & Co., Inc.
Ticker / Exchange
JHX - ASX
MRK - New York Stock Exchange
Market cap (USD)
n/a
$250.9B
Sector
Materials
Healthcare
HQ country
IE
US
Primary segment
Siding & Trim
Pharmaceutical
Market structure
Quasi-Monopoly
Competitive
Market share
88%-92% (estimated)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
74 / 100
71 / 100
Moat domains
Supply, Demand
Legal, Supply, Demand
Last update
2025-12-28
2025-12-22

Moat coverage

Shared moat types

Capex Knowhow Scale

James Hardie Industries plc strengths

Brand TrustLong Term ContractsOperational ExcellenceDistribution Control

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeScope EconomiesData Workflow Lockin

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%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

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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.