VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 9, 2026

Stock Comparison

Auckland International Airport Limited vs TMX Group Limited

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

Auckland International Airport Limited

AIA · NZX

Market cap (USD)$14.3B
Gross margin (TTM)54.4%
Operating margin (TTM)55%
Net margin (TTM)23.3%
SectorIndustrials
IndustryAirlines, Airports & Air Services
CountryNZ
Data as of2025-12-28
Moat score
74/ 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 Auckland International Airport Limited's moat claims, evidence, and risks.

View AIA 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: Auckland International Airport Limited leads (74 / 100 vs 70 / 100 for TMX Group Limited).
  • Segment focus: Auckland International Airport Limited has 3 segments; TMX Group Limited has 9 segments (16.1% in Trayport energy trading workflow software and network).
  • Primary market structure: Monopoly vs Oligopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: Auckland International Airport Limited has 5 moat types across 3 domains; TMX Group Limited has 12 across 5.

Primary market context

Auckland International Airport Limited

Aeronautical (regulated airport services)

Market

Aeronautical airport services at Auckland Airport (airfield landing/parking, passenger terminal and related charges)

Geography

New Zealand (Auckland catchment)

Customer

Airlines and aviation operators (direct customers); passengers indirectly

Role

Airport infrastructure operator

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

Auckland International Airport Limited
TMX Group Limited
Ticker / Exchange
AIA - NZX
X - Toronto Stock Exchange
Market cap (USD)
$14.3B
$14.4B
Gross margin (TTM)
54.4%
59.3%
Operating margin (TTM)
55%
38.7%
Net margin (TTM)
23.3%
23.8%
Sector
Industrials
Financials
Industry
Airlines, Airports & Air Services
Financial - Data & Stock Exchanges
HQ country
NZ
CA
Primary segment
Aeronautical (regulated airport services)
Trayport energy trading workflow software and network
Market structure
Monopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
74 / 100
70 / 100
Moat domains
Legal, Supply, Demand
Legal, Network, Demand, Supply, Financial
Last update
2025-12-28
2026-01-03

Moat coverage

Shared moat types

Distribution Control

Auckland International Airport Limited strengths

Permits Rights Of WayCapacity MoatLong Term ContractsGeographic Natural

TMX Group Limited strengths

Concession LicenseTwo Sided NetworkBrand TrustSwitching Costs GeneralCompliance AdvantageScale Economies Unit CostClearing SettlementRegulated Standards PipeInteroperability HubData Workflow LockinBenchmark Pricing Power

Segment mix

Auckland International Airport Limited segments

Full profile >

Aeronautical (regulated airport services)

Monopoly

n/a

Retail concessions and car parking

Quasi-Monopoly

n/a

Commercial property and precinct development

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.