VOL. XCIV, NO. 247
* WIDE MOAT STOCKS COMPARISON *
NO ADVICE
Monday, December 29, 2025
Stock Comparison
Auckland International Airport Limited vs Merck & Co., Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Auckland International Airport Limited
AIA · NZX
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 analysisMerck & Co., Inc.
MRK · New York Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Merck & Co., Inc.'s moat claims, evidence, and risks.
View MRK analysisComparison highlights
- Moat score gap: Auckland International Airport Limited leads (74 / 100 vs 71 / 100 for Merck & Co., Inc.).
- Segment focus: Auckland International Airport Limited has 3 segments; Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
- Primary market structure: Monopoly vs Competitive. Pricing power: Moderate vs Moderate.
- Moat breadth: Auckland International Airport Limited has 5 moat types across 3 domains; Merck & Co., Inc. has 5 across 3.
Primary market context
Auckland International Airport Limited
Aeronautical (regulated airport services)
Aeronautical airport services at Auckland Airport (airfield landing/parking, passenger terminal and related charges)
New Zealand (Auckland catchment)
Airlines and aviation operators (direct customers); passengers indirectly
Airport infrastructure operator
Merck & Co., Inc.
Pharmaceutical
Branded prescription pharmaceuticals & human vaccines
Global
Wholesalers/retailers, managed care and government payers, hospitals/clinics
R&D-intensive innovator, manufacturer, and marketer
89.5%
Side-by-side metrics
Moat coverage
Shared moat types
No overlap yet.
Auckland International Airport Limited strengths
Merck & Co., Inc. strengths
Segment mix
Auckland International Airport Limited segments
Full profile >Aeronautical (regulated airport services)
Monopoly
Retail concessions and car parking
Quasi-Monopoly
Commercial property and precinct development
Competitive
Merck & Co., Inc. segments
Full profile >Pharmaceutical
Competitive
Animal Health
Oligopoly
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View the moat stocks listCuration & 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.