VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Aon plc vs The Boeing Company

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

The Boeing Company

BA · New York Stock Exchange

Market cap (USD)
SectorIndustrials
CountryUS
Data as of2025-12-23
Moat score
61/ 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 The Boeing Company's moat claims, evidence, and risks.

View BA analysis

Comparison highlights

  • Moat score gap: Aon plc leads (70 / 100 vs 61 / 100 for The Boeing Company).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); The Boeing Company has 3 segments (35.8% in Defense, Space & Security (BDS)).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Weak.
  • Moat breadth: Aon plc has 6 moat types across 3 domains; The Boeing Company has 9 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%

The Boeing Company

Defense, Space & Security (BDS)

Market

Defense aerospace & space prime contracting (air, space, and mission systems)

Geography

Primarily U.S., with international programs

Customer

U.S. and allied governments; defense agencies

Role

Prime contractor / systems integrator

Revenue share

35.8%

Side-by-side metrics

Aon plc
The Boeing Company
Ticker / Exchange
AON - New York Stock Exchange
BA - New York Stock Exchange
Market cap (USD)
$76.6B
n/a
Sector
Financials
Industrials
HQ country
IE
US
Primary segment
Risk Capital
Defense, Space & Security (BDS)
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Weak
Moat score
70 / 100
61 / 100
Moat domains
Demand, Supply, Legal
Legal, Supply, Demand
Last update
2025-12-31
2025-12-23

Moat coverage

Shared moat types

Data Workflow LockinService Field NetworkCompliance Advantage

Aon plc strengths

Switching Costs GeneralBrand TrustScale Economies Unit Cost

The Boeing Company strengths

Regulated Standards PipeCapex Knowhow ScaleDesign In QualificationGovernment Contracting RelationshipsLong Term ContractsInstalled Base Consumables

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

The Boeing Company segments

Full profile >

Commercial Airplanes (BCA)

Duopoly

34.3%

Defense, Space & Security (BDS)

Oligopoly

35.8%

Global Services (BGS)

Competitive

29.9%

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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.