VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Monday, January 5, 2026

Stock Comparison

Aon plc vs Euronext N.V.

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

Aon plc

AON · New York Stock Exchange

Market cap (USD)$75.2B
Gross margin (TTM)43.7%
Operating margin (TTM)24.8%
Net margin (TTM)16%
SectorFinancials
IndustryInsurance - Brokers
CountryIE
Data as of2025-12-31
Moat score
70/ 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 Aon plc's moat claims, evidence, and risks.

View AON analysis

Euronext N.V.

ENX · Euronext Paris

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorFinancials
Industry
CountryNL
Data as of2026-01-03
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 Euronext N.V.'s moat claims, evidence, and risks.

View ENX analysis

Comparison highlights

  • Moat score gap: Euronext N.V. leads (74 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); Euronext N.V. has 7 segments (34.4% in Trading).
  • Moat breadth: Aon plc has 6 moat types across 3 domains; Euronext N.V. has 7 across 4.

Primary market context

Aon plc

Risk Capital

Market

Large-account commercial insurance & reinsurance brokerage and risk advisory

Geography

Global

Customer

Enterprises, insurers, reinsurers

Role

Intermediary/advisor

Revenue share

67%

Euronext N.V.

Trading

Market

Multi-asset exchange trading venues (cash equities, derivatives, fixed income, FX, power)

Geography

Europe (with global participants)

Customer

Broker-dealers, banks, proprietary trading firms, asset managers, and other market participants

Role

Trading venue operator

Revenue share

34.4%

Side-by-side metrics

Aon plc
Euronext N.V.
Ticker / Exchange
AON - New York Stock Exchange
ENX - Euronext Paris
Market cap (USD)
$75.2B
n/a
Gross margin (TTM)
43.7%
n/a
Operating margin (TTM)
24.8%
n/a
Net margin (TTM)
16%
n/a
Sector
Financials
Financials
Industry
Insurance - Brokers
n/a
HQ country
IE
NL
Primary segment
Risk Capital
Trading
Market structure
Oligopoly
Oligopoly
Market share
n/a
64.8% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
74 / 100
Moat domains
Demand, Supply, Legal
Legal, Network, Supply, Demand
Last update
2025-12-31
2026-01-03

Moat coverage

Shared moat types

Data Workflow Lockin

Aon plc strengths

Switching Costs GeneralService Field NetworkBrand TrustCompliance AdvantageScale Economies Unit Cost

Euronext N.V. strengths

Concession LicenseTwo Sided NetworkOperational ExcellenceIP Choke PointFormat Lock InClearing Settlement

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Euronext N.V. segments

Full profile >

Listing

Oligopoly

14.3%

Trading

Oligopoly

34.4%

Advanced Data Services

Quasi-Monopoly

14.9%

Clearing

Oligopoly

12.4%

Custody & Settlement

Quasi-Monopoly

16.6%

Technology Solutions & Other

Competitive

6.5%

Investor Services

Competitive

0.9%

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.