VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Abbott Laboratories vs Aon plc

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

Abbott Laboratories

ABT · New York Stock Exchange

Market cap (USD)$219.2B
SectorHealthcare
CountryUS
Data as of2025-12-30
Moat score
64/ 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 Abbott Laboratories's moat claims, evidence, and risks.

View ABT analysis

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

Comparison highlights

  • Moat score gap: Aon plc leads (70 / 100 vs 64 / 100 for Abbott Laboratories).
  • Segment focus: Abbott Laboratories has 7 segments (26.7% in Cardiovascular & Electrophysiology Devices); Aon plc has 2 segments (67% in Risk Capital).
  • Moat breadth: Abbott Laboratories has 10 moat types across 3 domains; Aon plc has 6 across 3.

Primary market context

Abbott Laboratories

Cardiovascular & Electrophysiology Devices

Market

Cardiovascular, electrophysiology, rhythm management, structural heart and heart failure devices

Geography

Global

Customer

Hospitals, ambulatory surgery centers, cardiologists/electrophysiologists

Role

Implantable device manufacturer

Revenue share

26.7%

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%

Side-by-side metrics

Abbott Laboratories
Aon plc
Ticker / Exchange
ABT - New York Stock Exchange
AON - New York Stock Exchange
Market cap (USD)
$219.2B
$76.6B
Sector
Healthcare
Financials
HQ country
US
IE
Primary segment
Cardiovascular & Electrophysiology Devices
Risk Capital
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
64 / 100
70 / 100
Moat domains
Demand, Legal, Supply
Demand, Supply, Legal
Last update
2025-12-30
2025-12-31

Moat coverage

Shared moat types

Brand TrustData Workflow LockinCompliance AdvantageScale Economies Unit Cost

Abbott Laboratories strengths

Procurement InertiaInstalled Base ConsumablesGovernment Contracting RelationshipsDistribution ControlTraining Org Change CostsIP Choke Point

Aon plc strengths

Switching Costs GeneralService Field Network

Segment mix

Abbott Laboratories segments

Full profile >

Established Pharmaceutical Products

Competitive

12.4%

Diagnostic Products

Oligopoly

22.3%

Pediatric Nutrition

Oligopoly

9.6%

Adult Nutrition

Oligopoly

10.5%

Diabetes Care (CGM & glucose monitoring)

Duopoly

16.2%

Cardiovascular & Electrophysiology Devices

Oligopoly

26.7%

Neuromodulation Devices

Oligopoly

2.3%

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

View the moat stocks list

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.