VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Aon plc vs Danaher Corporation

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

Danaher Corporation

DHR · New York Stock Exchange

Market cap (USD)$158.8B
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
77/ 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 Danaher Corporation's moat claims, evidence, and risks.

View DHR analysis

Comparison highlights

  • Moat score gap: Danaher Corporation leads (77 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); Danaher Corporation has 3 segments (41% in Diagnostics).
  • Moat breadth: Aon plc has 6 moat types across 3 domains; Danaher Corporation has 7 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%

Danaher Corporation

Diagnostics

Market

In vitro diagnostics instruments, consumables, software and services (clinical lab, acute care/POC, pathology, molecular diagnostics)

Geography

Global

Customer

Hospitals, physician offices, reference laboratories, pathology labs, critical care settings

Role

IVD device manufacturer and reagent/test supplier + software/services

Revenue share

41%

Side-by-side metrics

Aon plc
Danaher Corporation
Ticker / Exchange
AON - New York Stock Exchange
DHR - New York Stock Exchange
Market cap (USD)
$76.6B
$158.8B
Sector
Financials
Healthcare
HQ country
IE
US
Primary segment
Risk Capital
Diagnostics
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
77 / 100
Moat domains
Demand, Supply, Legal
Demand, Supply, Legal
Last update
2025-12-31
2025-12-22

Moat coverage

Shared moat types

Service Field Network

Aon plc strengths

Data Workflow LockinSwitching Costs GeneralBrand TrustCompliance AdvantageScale Economies Unit Cost

Danaher Corporation strengths

Installed Base ConsumablesDesign In QualificationOperational ExcellenceLearning Curve YieldRegulated Standards PipeSuite Bundling

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Danaher Corporation segments

Full profile >

Biotechnology

Oligopoly

28.3%

Life Sciences

Oligopoly

30.7%

Diagnostics

Oligopoly

41%

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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.