VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

American Tower Corporation vs TMX Group Limited

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)$82.5B
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

TMX Group Limited

X · Toronto Stock Exchange

Market cap (USD)$14.4B
Gross margin (TTM)59.3%
Operating margin (TTM)38.7%
Net margin (TTM)23.8%
SectorFinancials
IndustryFinancial - Data & Stock Exchanges
CountryCA
Data as of2026-01-03
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 TMX Group Limited's moat claims, evidence, and risks.

View X analysis

Comparison highlights

  • Moat score gap: American Tower Corporation leads (76 / 100 vs 70 / 100 for TMX Group Limited).
  • Segment focus: American Tower Corporation has 3 segments; TMX Group Limited has 9 segments (16.1% in Trayport energy trading workflow software and network).
  • Moat breadth: American Tower Corporation has 6 moat types across 4 domains; TMX Group Limited has 12 across 5.

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)

TMX Group Limited

Trayport energy trading workflow software and network

Market

Wholesale energy trading workflow software and network connectivity

Geography

Europe-centric, with global customers

Customer

Energy traders, brokers, exchanges/venues

Role

Interoperability hub / workflow platform

Revenue share

16.1%

Side-by-side metrics

American Tower Corporation
TMX Group Limited
Ticker / Exchange
AMT - New York Stock Exchange
X - Toronto Stock Exchange
Market cap (USD)
$82.5B
$14.4B
Gross margin (TTM)
74.6%
59.3%
Operating margin (TTM)
45.9%
38.7%
Net margin (TTM)
28.1%
23.8%
Sector
Real Estate
Financials
Industry
REIT - Specialty
Financial - Data & Stock Exchanges
HQ country
US
CA
Primary segment
U.S. & Canada Communications Sites
Trayport energy trading workflow software and network
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
76 / 100
70 / 100
Moat domains
Demand, Legal, Supply, Network
Legal, Network, Demand, Supply, Financial
Last update
2025-12-31
2026-01-03

Moat coverage

Shared moat types

Switching Costs GeneralInteroperability Hub

American Tower Corporation strengths

Long Term ContractsPermits Rights Of WayPhysical Network DensityCapacity Moat

TMX Group Limited strengths

Concession LicenseTwo Sided NetworkBrand TrustCompliance AdvantageScale Economies Unit CostClearing SettlementRegulated Standards PipeDistribution ControlData Workflow LockinBenchmark Pricing Power

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

TMX Group Limited segments

Full profile >

TSX & TSXV listing and sustaining fees

Oligopoly

10.8%

Issuer services (TSX Trust and TMX Newsfile)

Competitive

7.9%

Equities and fixed income trading venues (TSX, TSXV, TSX Alpha, Shorcan)

Oligopoly

8.8%

Post-trade clearing, settlement and depository (CDS / CDSX)

Quasi-Monopoly

8.6%

Canadian listed derivatives trading and clearing (Montreal Exchange + CDCC, excl. BOX)

Quasi-Monopoly

12.9%

U.S. equity options exchange (BOX)

Competitive

9.6%

Trayport energy trading workflow software and network

Oligopoly

16.1%

TMX Datalinx market data and co-location

Quasi-Monopoly

15.8%

TMX VettaFi indexing, ETF analytics, and digital distribution

Oligopoly

9.5%

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.