VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Auckland International Airport Limited vs Canadian National Railway Company

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)
SectorIndustrials
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

Canadian National Railway Company

CNR · Toronto Stock Exchange

Market cap (USD)$61.2B
SectorIndustrials
CountryCA
Data as of2025-12-30
Moat score
97/ 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 Canadian National Railway Company's moat claims, evidence, and risks.

View CNR analysis

Comparison highlights

  • Moat score gap: Canadian National Railway Company leads (97 / 100 vs 74 / 100 for Auckland International Airport Limited).
  • Segment focus: Auckland International Airport Limited has 3 segments; Canadian National Railway Company has 2 segments (96.2% in Rail freight transportation network).
  • Primary market structure: Monopoly vs Duopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: Auckland International Airport Limited has 5 moat types across 3 domains; Canadian National Railway Company has 4 across 2.

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

Canadian National Railway Company

Rail freight transportation network

Market

Canadian Class I freight rail transportation

Geography

Canada (with U.S. cross-border corridors)

Customer

Industrial shippers, intermodal customers, and auto supply chains

Role

Line-haul freight railway (Class I)

Revenue share

96.2%

Side-by-side metrics

Auckland International Airport Limited
Canadian National Railway Company
Ticker / Exchange
AIA - NZX
CNR - Toronto Stock Exchange
Market cap (USD)
n/a
$61.2B
Sector
Industrials
Industrials
HQ country
NZ
CA
Primary segment
Aeronautical (regulated airport services)
Rail freight transportation network
Market structure
Monopoly
Duopoly
Market share
n/a
50%-56% (estimated)
HHI estimate
n/a
4,031
Pricing power
Moderate
Moderate
Moat score
74 / 100
97 / 100
Moat domains
Legal, Supply, Demand
Legal, Supply
Last update
2025-12-28
2025-12-30

Moat coverage

Shared moat types

Permits Rights Of Way

Auckland International Airport Limited strengths

Capacity MoatDistribution ControlLong Term ContractsGeographic Natural

Canadian National Railway Company strengths

Physical Network DensityScale Economies Unit CostScope Economies

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

Canadian National Railway Company segments

Full profile >

Rail freight transportation network

Duopoly

96.2%

Non-rail logistics and ancillary services

Competitive

3.8%

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.