VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

London Stock Exchange Group plc vs Merck & Co., Inc.

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

London Stock Exchange Group plc

LSEG · London Stock Exchange

Market cap (USD)
SectorFinancials
CountryGB
Data as of2025-12-30
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 London Stock Exchange Group plc's moat claims, evidence, and risks.

View LSEG 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: London Stock Exchange Group plc leads (74 / 100 vs 71 / 100 for Merck & Co., Inc.).
  • Segment focus: London Stock Exchange Group plc has 5 segments (51% in Data & Analytics); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: London Stock Exchange Group plc has 8 moat types across 4 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

London Stock Exchange Group plc

Data & Analytics

Market

Financial market data, analytics and workflows (terminals and enterprise feeds)

Geography

Global

Customer

Financial institutions and corporates

Role

Data & analytics vendor

Revenue share

51%

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

London Stock Exchange Group plc
Merck & Co., Inc.
Ticker / Exchange
LSEG - London Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
n/a
$250.9B
Sector
Financials
Healthcare
HQ country
GB
US
Primary segment
Data & Analytics
Pharmaceutical
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
74 / 100
71 / 100
Moat domains
Demand, Supply, Network, Legal
Legal, Supply, Demand
Last update
2025-12-30
2025-12-22

Moat coverage

Shared moat types

Data Workflow Lockin

London Stock Exchange Group plc strengths

Scale Economies Unit CostDe Facto StandardBrand TrustCompliance AdvantageTwo Sided NetworkClearing SettlementConcession License

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleScope Economies

Segment mix

London Stock Exchange Group plc segments

Full profile >

Data & Analytics

Oligopoly

51%

FTSE Russell

Oligopoly

10.7%

Risk Intelligence

Oligopoly

6.2%

Capital Markets

Oligopoly

21.3%

Post Trade

Quasi-Monopoly

10.8%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

View the moat stocks list

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.