VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
Amgen Inc. vs Aon plc
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Amgen Inc.
AMGN · Nasdaq Stock Market
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Aon plc
AON · New York Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Comparison highlights
- Moat score: both at 70 / 100.
- Segment focus: Amgen Inc. has 3 segments (80.1% in Core Innovative Medicines); Aon plc has 2 segments (67% in Risk Capital).
- Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Moderate.
- Moat breadth: Amgen Inc. has 5 moat types across 3 domains; Aon plc has 6 across 3.
Primary market context
Amgen Inc.
Core Innovative Medicines
Branded biopharmaceutical therapies for common diseases (bone health, inflammation, oncology, cardiovascular and other specialty areas)
Global
Payers, providers, and pharmacies
Drug developer/manufacturer
80.1%
Aon plc
Risk Capital
Large-account commercial insurance & reinsurance brokerage and risk advisory
Global
Enterprises, insurers, reinsurers
Intermediary/advisor
67%
Side-by-side metrics
Moat coverage
Shared moat types
Amgen Inc. strengths
Aon plc strengths
Segment mix
Amgen Inc. segments
Full profile >Core Innovative Medicines
Competitive
Rare Disease Portfolio (Horizon + others)
Quasi-Monopoly
Biosimilars
Oligopoly
Aon plc segments
Full profile >Risk Capital
Oligopoly
Human Capital
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 Pricing, features, and availability may be incomplete or out of date.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.