VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

The Home Depot, Inc. vs Merck & Co., Inc.

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

The Home Depot, Inc.

HD · New York Stock Exchange

Market cap (USD)$345.9B
SectorConsumer
CountryUS
Data as of2025-12-30
Moat score
69/ 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 The Home Depot, Inc.'s moat claims, evidence, and risks.

View HD 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: Merck & Co., Inc. leads (71 / 100 vs 69 / 100 for The Home Depot, Inc.).
  • Segment focus: The Home Depot, Inc. has 2 segments (96% in Primary segment - North American home improvement retail (stores + online)); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Competitive vs Competitive. Pricing power: Weak vs Moderate.
  • Moat breadth: The Home Depot, Inc. has 4 moat types across 2 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

The Home Depot, Inc.

Primary segment - North American home improvement retail (stores + online)

Market

Home improvement retail (omnichannel)

Geography

North America (US, Canada, Mexico)

Customer

DIY homeowners and professional contractors

Role

Retailer

Revenue share

96%

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

The Home Depot, Inc.
Merck & Co., Inc.
Ticker / Exchange
HD - New York Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
$345.9B
$250.9B
Sector
Consumer
Healthcare
HQ country
US
US
Primary segment
Primary segment - North American home improvement retail (stores + online)
Pharmaceutical
Market structure
Competitive
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Weak
Moderate
Moat score
69 / 100
71 / 100
Moat domains
Supply, Demand
Legal, Supply, Demand
Last update
2025-12-30
2025-12-22

Moat coverage

Shared moat types

No overlap yet.

The Home Depot, Inc. strengths

Physical Network DensityDistribution ControlProcurement InertiaScale Economies Unit Cost

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleScope EconomiesData Workflow Lockin

Segment mix

The Home Depot, Inc. segments

Full profile >

Primary segment - North American home improvement retail (stores + online)

Competitive

96%

Other - Specialty trade distribution (SRS: roofing, landscape, pool)

Competitive

4%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

Want the full wide moat stocks list?

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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.