VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

MarketAxess Holdings Inc. vs RELX PLC

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

MarketAxess Holdings Inc.

MKTX · NASDAQ Global Select Market

Market cap (USD)$6.7B
SectorFinancials
CountryUS
Data as of2025-12-23
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 MarketAxess Holdings Inc.'s moat claims, evidence, and risks.

View MKTX 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: RELX PLC leads (78 / 100 vs 74 / 100 for MarketAxess Holdings Inc.).
  • Segment focus: MarketAxess Holdings Inc. has 2 segments (87.1% in Trade Execution Solutions); RELX PLC has 4 segments (34.4% in Risk).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: MarketAxess Holdings Inc. has 6 moat types across 3 domains; RELX PLC has 8 across 3.

Primary market context

MarketAxess Holdings Inc.

Trade Execution Solutions

Market

Electronic fixed-income trade execution platforms (credit and rates)

Geography

Global

Customer

Institutional investors, broker-dealers, and alternative liquidity providers

Role

Electronic trading venue / marketplace operator

Revenue share

87.1%

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

MarketAxess Holdings Inc.
RELX PLC
Ticker / Exchange
MKTX - NASDAQ Global Select Market
REL - London Stock Exchange
Market cap (USD)
$6.7B
$74.8B
Sector
Financials
Industrials
HQ country
US
GB
Primary segment
Trade Execution Solutions
Risk
Market structure
Oligopoly
Oligopoly
Market share
19% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
74 / 100
78 / 100
Moat domains
Network, Demand, Legal
Network, Demand, Legal
Last update
2025-12-23
2025-12-30

Moat coverage

Shared moat types

Two Sided NetworkData Workflow LockinData Network EffectsCompliance Advantage

MarketAxess Holdings Inc. strengths

Switching Costs GeneralEcosystem Complements

RELX PLC strengths

Content Rights CurrencyBrand TrustSuite BundlingReputation Reviews

Segment mix

MarketAxess Holdings Inc. segments

Full profile >

Trade Execution Solutions

Oligopoly

87.1%

Services (Data, Post-Trade and Technology)

Competitive

12.9%

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?

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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.