VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

HOYA Corporation vs Aon plc

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

HOYA Corporation

7741 · Tokyo Stock Exchange

Market cap (USD)$23.6B
SectorHealthcare
CountryJP
Data as of2025-12-28
Moat score
72/ 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 HOYA Corporation's moat claims, evidence, and risks.

View 7741 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: HOYA Corporation leads (72 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: HOYA Corporation has 5 segments (48.2% in Eye Health Domain (healthcare-related products)); Aon plc has 2 segments (67% in Risk Capital).
  • Moat breadth: HOYA Corporation has 7 moat types across 3 domains; Aon plc has 6 across 3.

Primary market context

HOYA Corporation

Eye Health Domain (healthcare-related products)

Market

Ophthalmic products (eyeglass lenses, contact lens retail, intraocular lenses)

Geography

Global (eyeglass lenses & IOL); Japan (contact lens retail)

Customer

Optical retailers, consumers, hospitals/clinics

Role

Manufacturer and retailer

Revenue share

48.2%

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

HOYA Corporation
Aon plc
Ticker / Exchange
7741 - Tokyo Stock Exchange
AON - New York Stock Exchange
Market cap (USD)
$23.6B
$76.6B
Sector
Healthcare
Financials
HQ country
JP
IE
Primary segment
Eye Health Domain (healthcare-related products)
Risk Capital
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
72 / 100
70 / 100
Moat domains
Demand, Supply, Legal
Demand, Supply, Legal
Last update
2025-12-28
2025-12-31

Moat coverage

Shared moat types

Brand TrustCompliance Advantage

HOYA Corporation strengths

Physical Network DensityReputation ReviewsDesign In QualificationLearning Curve YieldNiche speech synthesis portfolio

Aon plc strengths

Data Workflow LockinSwitching Costs GeneralService Field NetworkScale Economies Unit Cost

Segment mix

HOYA Corporation segments

Full profile >

Eye Health Domain (healthcare-related products)

Oligopoly

48.2%

Med-Tech Domain (medical-related products)

Oligopoly

15.4%

Electronics-related products (semiconductor/display photomask materials, HDD substrates)

Oligopoly

30.6%

Imaging-related products (optical lenses and optical materials)

Competitive

5.3%

Other (speech synthesis software)

Competitive

0.5%

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

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.