VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Auckland International Airport Limited vs Auto Trader Group plc

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)$14.4B
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

Auto Trader Group plc

AUTO · London Stock Exchange

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorCommunication Services
Industry
CountryGB
Data as of2026-01-10
Moat score
96/ 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 Auto Trader Group plc's moat claims, evidence, and risks.

View AUTO analysis

Comparison highlights

  • Moat score gap: Auto Trader Group plc leads (96 / 100 vs 74 / 100 for Auckland International Airport Limited).
  • Segment focus: Auckland International Airport Limited has 3 segments; Auto Trader Group plc has 2 segments (93.3% in Autotrader (UK automotive marketplace & data platform)).
  • Primary market structure: Monopoly vs Quasi-Monopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Auckland International Airport Limited has 5 moat types across 3 domains; Auto Trader Group plc 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

Auto Trader Group plc

Autotrader (UK automotive marketplace & data platform)

Market

UK digital automotive marketplace (new & used) with retailer advertising/data products

Geography

United Kingdom

Customer

Consumers, vehicle retailers, OEMs/advertising agencies

Role

Two-sided marketplace + advertising/data & workflow tools

Revenue share

93.3%

Side-by-side metrics

Auckland International Airport Limited
Auto Trader Group plc
Ticker / Exchange
AIA - NZX
AUTO - London Stock Exchange
Market cap (USD)
$14.4B
n/a
Gross margin (TTM)
54.4%
n/a
Operating margin (TTM)
55%
n/a
Net margin (TTM)
23.3%
n/a
Sector
Industrials
Communication Services
Industry
Airlines, Airports & Air Services
n/a
HQ country
NZ
GB
Primary segment
Aeronautical (regulated airport services)
Autotrader (UK automotive marketplace & data platform)
Market structure
Monopoly
Quasi-Monopoly
Market share
n/a
75%-80% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
74 / 100
96 / 100
Moat domains
Legal, Supply, Demand
Network, Demand
Last update
2025-12-28
2026-01-10

Moat coverage

Shared moat types

No overlap yet.

Auckland International Airport Limited strengths

Permits Rights Of WayCapacity MoatDistribution ControlLong Term ContractsGeographic Natural

Auto Trader Group plc strengths

Two Sided NetworkData Workflow LockinHabit DefaultEcosystem Complements

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

Auto Trader Group plc segments

Full profile >

Autotrader (UK automotive marketplace & data platform)

Quasi-Monopoly

93.3%

Autorama (vehicle leasing marketplace)

Competitive

6.7%

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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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.