VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Aon plc vs Wolters Kluwer 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)$76.6B
SectorFinancials
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

Wolters Kluwer N.V.

WKL · Euronext Amsterdam

Market cap (USD)$23.9B
SectorIndustrials
CountryNL
Data as of2025-12-29
Moat score
73/ 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 Wolters Kluwer N.V.'s moat claims, evidence, and risks.

View WKL analysis

Comparison highlights

  • Moat score gap: Wolters Kluwer N.V. leads (73 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); Wolters Kluwer N.V. has 5 segments (26.8% in Health).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Aon plc has 6 moat types across 3 domains; Wolters Kluwer N.V. has 6 across 2.

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%

Wolters Kluwer N.V.

Health

Market

Clinical decision support and clinical drug information solutions (point-of-care) for healthcare providers

Geography

Global

Customer

Hospitals/health systems, clinicians, payers, and academic institutions

Role

Software + expert content provider

Revenue share

26.8%

Side-by-side metrics

Aon plc
Wolters Kluwer N.V.
Ticker / Exchange
AON - New York Stock Exchange
WKL - Euronext Amsterdam
Market cap (USD)
$76.6B
$23.9B
Sector
Financials
Industrials
HQ country
IE
NL
Primary segment
Risk Capital
Health
Market structure
Oligopoly
Oligopoly
Market share
n/a
85%-90% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
70 / 100
73 / 100
Moat domains
Demand, Supply, Legal
Demand, Legal
Last update
2025-12-31
2025-12-29

Moat coverage

Shared moat types

Data Workflow LockinSwitching Costs GeneralBrand TrustCompliance Advantage

Aon plc strengths

Service Field NetworkScale Economies Unit Cost

Wolters Kluwer N.V. strengths

Suite BundlingLong Term Contracts

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Wolters Kluwer N.V. segments

Full profile >

Health

Oligopoly

26.8%

Tax & Accounting

Oligopoly

26.4%

Financial & Corporate Compliance

Oligopoly

20.8%

Legal & Regulatory

Oligopoly

16%

Corporate Performance & ESG

Competitive

10.1%

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.