VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 1, 2026

Stock Comparison

Aon plc vs Illinois Tool Works Inc.

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

Illinois Tool Works Inc.

ITW · New York Stock Exchange

Market cap (USD)
SectorIndustrials
CountryUS
Data as of2025-12-31
Moat score
66/ 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 Illinois Tool Works Inc.'s moat claims, evidence, and risks.

View ITW analysis

Comparison highlights

  • Moat score gap: Aon plc leads (70 / 100 vs 66 / 100 for Illinois Tool Works Inc.).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); Illinois Tool Works Inc. has 7 segments (20% in Automotive OEM).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Aon plc has 6 moat types across 3 domains; Illinois Tool Works Inc. has 8 across 3.

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%

Illinois Tool Works Inc.

Automotive OEM

Market

Automotive OEM engineered components and fasteners

Geography

Global

Customer

Automotive OEMs and Tier suppliers

Role

Component supplier

Revenue share

20%

Side-by-side metrics

Aon plc
Illinois Tool Works Inc.
Ticker / Exchange
AON - New York Stock Exchange
ITW - New York Stock Exchange
Market cap (USD)
$76.6B
n/a
Sector
Financials
Industrials
HQ country
IE
US
Primary segment
Risk Capital
Automotive OEM
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
66 / 100
Moat domains
Demand, Supply, Legal
Demand, Supply, Legal
Last update
2025-12-31
2025-12-31

Moat coverage

Shared moat types

Switching Costs GeneralService Field NetworkBrand Trust

Aon plc strengths

Data Workflow LockinCompliance AdvantageScale Economies Unit Cost

Illinois Tool Works Inc. strengths

Design In QualificationOperational ExcellenceInstalled Base ConsumablesFormulation and application engineering know-howIP Choke Point

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Illinois Tool Works Inc. segments

Full profile >

Automotive OEM

Competitive

20%

Food Equipment

Oligopoly

16.6%

Test & Measurement and Electronics

Oligopoly

17.7%

Welding

Oligopoly

11.6%

Polymers & Fluids

Competitive

11.1%

Construction Products

Competitive

12%

Specialty Products

Oligopoly

10.9%

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.