VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Aon plc vs SBA Communications 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)$75.2B
Gross margin (TTM)43.7%
Operating margin (TTM)24.8%
Net margin (TTM)16%
SectorFinancials
IndustryInsurance - Brokers
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

SBA Communications Corporation

SBAC · NASDAQ

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorReal Estate
IndustryREIT - Specialty
CountryUS
Data as of2026-01-02
Moat score
71/ 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 SBA Communications Corporation's moat claims, evidence, and risks.

View SBAC analysis

Comparison highlights

  • Moat score gap: SBA Communications Corporation leads (71 / 100 vs 70 / 100 for Aon plc).
  • Segment focus: Aon plc has 2 segments (67% in Risk Capital); SBA Communications Corporation has 3 segments (69.5% in Domestic Site Leasing).
  • Moat breadth: Aon plc has 6 moat types across 3 domains; SBA Communications Corporation has 4 across 2.

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%

SBA Communications Corporation

Domestic Site Leasing

Market

U.S. wireless macro tower leasing (multi-tenant co-location on communications towers)

Geography

United States and territories

Customer

Wireless service providers and other wireless network operators/tenants

Role

Independent tower owner/operator (REIT)

Revenue share

69.5%

Side-by-side metrics

Aon plc
SBA Communications Corporation
Ticker / Exchange
AON - New York Stock Exchange
SBAC - NASDAQ
Market cap (USD)
$75.2B
n/a
Gross margin (TTM)
43.7%
n/a
Operating margin (TTM)
24.8%
n/a
Net margin (TTM)
16%
n/a
Sector
Financials
Real Estate
Industry
Insurance - Brokers
REIT - Specialty
HQ country
IE
US
Primary segment
Risk Capital
Domestic Site Leasing
Market structure
Oligopoly
Oligopoly
Market share
n/a
16%-19% (implied)
HHI estimate
n/a
3,710
Pricing power
Moderate
Moderate
Moat score
70 / 100
71 / 100
Moat domains
Demand, Supply, Legal
Supply, Demand
Last update
2025-12-31
2026-01-02

Moat coverage

Shared moat types

Scale Economies Unit Cost

Aon plc strengths

Data Workflow LockinSwitching Costs GeneralService Field NetworkBrand TrustCompliance Advantage

SBA Communications Corporation strengths

Physical Network DensityLong Term ContractsOperational Excellence

Segment mix

Aon plc segments

Full profile >

Risk Capital

Oligopoly

67%

Human Capital

Oligopoly

33.2%

SBA Communications Corporation segments

Full profile >

Domestic Site Leasing

Oligopoly

69.5%

International Site Leasing

Oligopoly

24.8%

Site Development

Competitive

5.7%

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.