VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 1, 2026

Stock Comparison

Aon plc vs Marriott International, 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

Marriott International, Inc.

MAR · NASDAQ

Market cap (USD)
SectorConsumer
CountryUS
Data as of2026-01-01
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 Marriott International, Inc.'s moat claims, evidence, and risks.

View MAR analysis

Comparison highlights

  • Moat score gap: Marriott International, Inc. leads (72 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); Marriott International, Inc. has 2 segments.
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Aon plc has 6 moat types across 3 domains; Marriott International, Inc. has 4 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%

Marriott International, Inc.

U.S. & Canada Lodging Platform

Market

Branded hotel franchising & management platform (including loyalty and reservation systems)

Geography

U.S. & Canada

Customer

Two-sided: travelers (guests) and hotel owners (franchisees/owners of managed properties)

Role

Brand owner / franchisor / manager; operator of reservation, loyalty, and marketing systems

Side-by-side metrics

Aon plc
Marriott International, Inc.
Ticker / Exchange
AON - New York Stock Exchange
MAR - NASDAQ
Market cap (USD)
$76.6B
n/a
Sector
Financials
Consumer
HQ country
IE
US
Primary segment
Risk Capital
U.S. & Canada Lodging Platform
Market structure
Oligopoly
Competitive
Market share
n/a
16%-18% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
72 / 100
Moat domains
Demand, Supply, Legal
Demand, Network, Supply
Last update
2025-12-31
2026-01-01

Moat coverage

Shared moat types

Brand Trust

Aon plc strengths

Data Workflow LockinSwitching Costs GeneralService Field NetworkCompliance AdvantageScale Economies Unit Cost

Marriott International, Inc. strengths

Two Sided NetworkDistribution ControlLong Term Contracts

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Marriott International, Inc. segments

Full profile >

U.S. & Canada Lodging Platform

Competitive

n/a

International Lodging Platform

Competitive

n/a

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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.