VOL. XCIV, NO. 247

* WIDE MOAT STOCKS COMPARISON *

NO ADVICE

Monday, December 29, 2025

Stock Comparison

Auckland International Airport Limited vs Amgen 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)
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

Amgen Inc.

AMGN · Nasdaq Stock Market

Market cap (USD)
SectorHealthcare
CountryUS
Data as of2025-12-22
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 Amgen Inc.'s moat claims, evidence, and risks.

View AMGN analysis

Comparison highlights

  • Moat score gap: Auckland International Airport Limited leads (74 / 100 vs 70 / 100 for Amgen Inc.).
  • Segment focus: Auckland International Airport Limited has 3 segments; Amgen Inc. has 3 segments (80.1% in Core Innovative Medicines).
  • Primary market structure: Monopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Auckland International Airport Limited has 5 moat types across 3 domains; Amgen Inc. has 5 across 3.

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

Amgen Inc.

Core Innovative Medicines

Market

Branded biopharmaceutical therapies for common diseases (bone health, inflammation, oncology, cardiovascular and other specialty areas)

Geography

Global

Customer

Payers, providers, and pharmacies

Role

Drug developer/manufacturer

Revenue share

80.1%

Side-by-side metrics

Auckland International Airport Limited
Amgen Inc.
Ticker / Exchange
AIA - NZX
AMGN - Nasdaq Stock Market
Market cap (USD)
n/a
n/a
Sector
Industrials
Healthcare
HQ country
NZ
US
Primary segment
Aeronautical (regulated airport services)
Core Innovative Medicines
Market structure
Monopoly
Competitive
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, Supply, Demand
Last update
2025-12-28
2025-12-22

Moat coverage

Shared moat types

No overlap yet.

Auckland International Airport Limited strengths

Permits Rights Of WayCapacity MoatDistribution ControlLong Term ContractsGeographic Natural

Amgen Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleBrand TrustLearning Curve Yield

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

Amgen Inc. segments

Full profile >

Core Innovative Medicines

Competitive

80.1%

Rare Disease Portfolio (Horizon + others)

Quasi-Monopoly

13.3%

Biosimilars

Oligopoly

6.6%

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.