VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Aon plc vs Nasdaq, 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

Nasdaq, Inc.

NDAQ · NASDAQ

Market cap (USD)
SectorFinancials
CountryUS
Data as of2025-12-31
Moat score
76/ 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 Nasdaq, Inc.'s moat claims, evidence, and risks.

View NDAQ analysis

Comparison highlights

  • Moat score gap: Nasdaq, Inc. leads (76 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); Nasdaq, Inc. has 3 segments (42.4% in Capital Access Platforms).
  • Moat breadth: Aon plc has 6 moat types across 3 domains; Nasdaq, Inc. has 9 across 5.

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%

Nasdaq, Inc.

Capital Access Platforms

Market

Issuer and investor solutions: listings, index licensing, market data, and investment analytics/workflow platforms

Geography

Global (with major exposure to U.S. and Nordic/Baltic markets)

Customer

Public/private companies (issuers), asset managers, institutional investors, data subscribers

Role

Listing venue + index administrator/licensor + data/analytics provider

Revenue share

42.4%

Side-by-side metrics

Aon plc
Nasdaq, Inc.
Ticker / Exchange
AON - New York Stock Exchange
NDAQ - NASDAQ
Market cap (USD)
$76.6B
n/a
Sector
Financials
Financials
HQ country
IE
US
Primary segment
Risk Capital
Capital Access Platforms
Market structure
Oligopoly
Oligopoly
Market share
n/a
80%-84% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
76 / 100
Moat domains
Demand, Supply, Legal
Legal, Network, Supply, Demand, Financial
Last update
2025-12-31
2025-12-31

Moat coverage

Shared moat types

Data Workflow LockinBrand TrustCompliance Advantage

Aon plc strengths

Switching Costs GeneralService Field NetworkScale Economies Unit Cost

Nasdaq, Inc. strengths

Concession LicenseTwo Sided NetworkPhysical Network DensityDe Facto StandardBenchmark Pricing PowerLong Term Contracts

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

Nasdaq, Inc. segments

Full profile >

Market Services

Competitive

21.9%

Capital Access Platforms

Oligopoly

42.4%

Financial Technology

Competitive

35.6%

Want the full wide moat stocks list?

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

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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.