VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

American Tower Corporation vs Brown & Brown, Inc.

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

American Tower Corporation

AMT · New York Stock Exchange

Market cap (USD)$78.9B
Gross margin (TTM)74.6%
Operating margin (TTM)45.9%
Net margin (TTM)28.1%
SectorReal Estate
IndustryREIT - Specialty
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 American Tower Corporation's moat claims, evidence, and risks.

View AMT analysis

Brown & Brown, Inc.

BRO · New York Stock Exchange

Market cap (USD)$27.5B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorFinancials
IndustryInsurance - Brokers
CountryUS
Data as of2026-01-09
Moat score
61/ 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 Brown & Brown, Inc.'s moat claims, evidence, and risks.

View BRO analysis

Comparison highlights

  • Moat score gap: American Tower Corporation leads (76 / 100 vs 61 / 100 for Brown & Brown, Inc.).
  • Segment focus: American Tower Corporation has 3 segments; Brown & Brown, Inc. has 2 segments (59% in Retail).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: American Tower Corporation has 6 moat types across 4 domains; Brown & Brown, Inc. has 5 across 3.

Primary market context

American Tower Corporation

U.S. & Canada Communications Sites

Market

Wireless communications site leasing (macro towers, rooftops and DAS)

Geography

United States and Canada

Customer

Wireless carriers and other tenants (broadcast, data, government/municipal)

Role

Independent owner/operator of communications real estate (towerco)

Brown & Brown, Inc.

Retail

Market

Retail insurance brokerage and agency services (commercial P&C, employee benefits, personal lines) plus dealer F&I risk-mitigating products

Geography

Primarily United States; also selected international operations

Customer

Commercial (SMB to mid-market), public/quasi-public entities, professional and individual insured customers; auto/RV dealers for F&I

Role

Insurance intermediary (agent/broker) and risk solutions advisor

Revenue share

59%

Side-by-side metrics

American Tower Corporation
Brown & Brown, Inc.
Ticker / Exchange
AMT - New York Stock Exchange
BRO - New York Stock Exchange
Market cap (USD)
$78.9B
$27.5B
Gross margin (TTM)
74.6%
n/a
Operating margin (TTM)
45.9%
n/a
Net margin (TTM)
28.1%
n/a
Sector
Real Estate
Financials
Industry
REIT - Specialty
Insurance - Brokers
HQ country
US
US
Primary segment
U.S. & Canada Communications Sites
Retail
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
76 / 100
61 / 100
Moat domains
Demand, Legal, Supply, Network
Demand, Supply, Legal
Last update
2025-12-31
2026-01-09

Moat coverage

Shared moat types

No overlap yet.

American Tower Corporation strengths

Long Term ContractsPermits Rights Of WayPhysical Network DensitySwitching Costs GeneralInteroperability HubCapacity Moat

Brown & Brown, Inc. strengths

Procurement InertiaBrand TrustScale Economies Unit CostContractual ExclusivityPreferential Input Access

Segment mix

American Tower Corporation segments

Full profile >

U.S. & Canada Communications Sites

Oligopoly

n/a

International Communications Sites

Oligopoly

n/a

Data Centers

Competitive

n/a

Brown & Brown, Inc. segments

Full profile >

Retail

Competitive

59%

Specialty Distribution

Oligopoly

41%

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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Looking for expansion-stage stocks?

Proven models entering the expansion stage with unit economics that work.

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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.