VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 9, 2026

Stock Comparison

Auckland International Airport Limited vs Interactive Brokers Group, Inc.

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

Interactive Brokers Group, Inc.

IBKR · NASDAQ

Market cap (USD)$123.6B
Gross margin (TTM)89%
Operating margin (TTM)82.7%
Net margin (TTM)9.2%
SectorFinancials
IndustryInvestment - Banking & Investment Services
CountryUS
Data as of2026-01-06
Moat score
60/ 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 Interactive Brokers Group, Inc.'s moat claims, evidence, and risks.

View IBKR analysis

Comparison highlights

  • Moat score gap: Auckland International Airport Limited leads (74 / 100 vs 60 / 100 for Interactive Brokers Group, Inc.).
  • Segment focus: Auckland International Airport Limited has 3 segments; Interactive Brokers Group, Inc. has 1 segment (100% in Electronic brokerage).
  • Primary market structure: Monopoly vs Competitive. Pricing power: Moderate vs Weak.
  • Moat breadth: Auckland International Airport Limited has 5 moat types across 3 domains; Interactive Brokers Group, Inc. has 4 across 4.

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

Interactive Brokers Group, Inc.

Electronic brokerage

Market

Multi-asset electronic brokerage, clearing, custody, and financing (self-directed and institutional)

Geography

Global

Customer

Individual investors and institutional clients (e.g., hedge funds, advisors, proprietary trading firms, introducing brokers)

Role

Broker-dealer / clearing broker / platform operator

Revenue share

100%

Side-by-side metrics

Auckland International Airport Limited
Interactive Brokers Group, Inc.
Ticker / Exchange
AIA - NZX
IBKR - NASDAQ
Market cap (USD)
$14.3B
$123.6B
Gross margin (TTM)
54.4%
89%
Operating margin (TTM)
55%
82.7%
Net margin (TTM)
23.3%
9.2%
Sector
Industrials
Financials
Industry
Airlines, Airports & Air Services
Investment - Banking & Investment Services
HQ country
NZ
US
Primary segment
Aeronautical (regulated airport services)
Electronic brokerage
Market structure
Monopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Weak
Moat score
74 / 100
60 / 100
Moat domains
Legal, Supply, Demand
Supply, Network, Legal, Demand
Last update
2025-12-28
2026-01-06

Moat coverage

Shared moat types

No overlap yet.

Auckland International Airport Limited strengths

Permits Rights Of WayCapacity MoatDistribution ControlLong Term ContractsGeographic Natural

Interactive Brokers Group, Inc. strengths

Operational ExcellenceInteroperability HubCompliance AdvantageData Workflow Lockin

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

Interactive Brokers Group, Inc. segments

Full profile >

Electronic brokerage

Competitive

100%

Want the full wide moat stocks list?

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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.