VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

Moody's Corporation vs RELX PLC

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

Moody's Corporation

MCO · New York Stock Exchange

Market cap (USD)
SectorFinancials
CountryUS
Data as of2025-12-21
Moat score
79/ 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 Moody's Corporation's moat claims, evidence, and risks.

View MCO analysis

RELX PLC

REL · London Stock Exchange

Market cap (USD)$74.8B
SectorIndustrials
CountryGB
Data as of2025-12-30
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 RELX PLC's moat claims, evidence, and risks.

View REL analysis

Comparison highlights

  • Moat score gap: Moody's Corporation leads (79 / 100 vs 78 / 100 for RELX PLC).
  • Segment focus: Moody's Corporation has 2 segments (53.5% in Moody's Investors Service (Credit Ratings)); RELX PLC has 4 segments (34.4% in Risk).
  • Moat breadth: Moody's Corporation has 5 moat types across 4 domains; RELX PLC has 8 across 3.

Primary market context

Moody's Corporation

Moody's Investors Service (Credit Ratings)

Market

Credit ratings and ratings-related research

Geography

Global

Customer

Issuers, investors, regulators

Role

Credit rating agency / research provider

Revenue share

53.5%

RELX PLC

Risk

Market

Risk analytics & decisioning platforms (fraud/identity, financial crime compliance, insurance underwriting/claims, industry data)

Geography

Global (largest in North America)

Customer

Enterprises (banks, insurers, digital commerce), governments, and other regulated industries

Role

Data/analytics provider and workflow platform

Revenue share

34.4%

Side-by-side metrics

Moody's Corporation
RELX PLC
Ticker / Exchange
MCO - New York Stock Exchange
REL - London Stock Exchange
Market cap (USD)
n/a
$74.8B
Sector
Financials
Industrials
HQ country
US
GB
Primary segment
Moody's Investors Service (Credit Ratings)
Risk
Market structure
Oligopoly
Oligopoly
Market share
29%-32% (estimated)
n/a
HHI estimate
3,568
n/a
Pricing power
Strong
Strong
Moat score
79 / 100
78 / 100
Moat domains
Legal, Network, Demand, Supply
Network, Demand, Legal
Last update
2025-12-21
2025-12-30

Moat coverage

Shared moat types

Brand TrustData Workflow Lockin

Moody's Corporation strengths

Regulated Standards PipeDe Facto StandardScope Economies

RELX PLC strengths

Data Network EffectsCompliance AdvantageContent Rights CurrencySuite BundlingTwo Sided NetworkReputation Reviews

Segment mix

Moody's Corporation segments

Full profile >

Moody's Investors Service (Credit Ratings)

Oligopoly

53.5%

Moody's Analytics (Risk & Data/Software)

Competitive

46.5%

RELX PLC segments

Full profile >

Risk

Oligopoly

34.4%

Scientific, Technical & Medical

Oligopoly

32.3%

Legal

Oligopoly

20.1%

Exhibitions

Competitive

13.1%

Want the full wide moat stocks list?

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

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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.