VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Experian plc vs Merck & Co., Inc.

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

Experian plc

EXPN · London Stock Exchange

Market cap (USD)$41.9B
SectorIndustrials
CountryJE
Data as of2025-12-30
Moat score
76/ 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 Experian plc's moat claims, evidence, and risks.

View EXPN 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: Experian plc leads (76 / 100 vs 71 / 100 for Merck & Co., Inc.).
  • Segment focus: Experian plc has 4 segments (67.2% in North America); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Strong vs Moderate.
  • Moat breadth: Experian plc has 7 moat types across 4 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

Experian plc

North America

Market

Consumer and business credit reporting, identity/fraud data and decision analytics, plus consumer credit/insurance marketplaces

Geography

North America

Customer

Financial institutions, insurers, auto lenders, healthcare providers, advertisers, consumers

Role

Data/analytics provider and consumer marketplace operator

Revenue share

67.2%

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

Experian plc
Merck & Co., Inc.
Ticker / Exchange
EXPN - London Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
$41.9B
$250.9B
Sector
Industrials
Healthcare
HQ country
JE
US
Primary segment
North America
Pharmaceutical
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
76 / 100
71 / 100
Moat domains
Network, Legal, Supply, Demand
Legal, Supply, Demand
Last update
2025-12-30
2025-12-22

Moat coverage

Shared moat types

Regulated Standards Pipe

Experian plc strengths

Data Network EffectsTwo Sided NetworkPreferential Input AccessCompliance AdvantageSuite BundlingSwitching Costs General

Merck & Co., Inc. strengths

IP Choke PointCapex Knowhow ScaleScope EconomiesData Workflow Lockin

Segment mix

Experian plc segments

Full profile >

North America

Oligopoly

67.2%

Latin America

Quasi-Monopoly

14.2%

UK and Ireland

Oligopoly

11.6%

EMEA and Asia Pacific

Competitive

7%

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.