VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
Aon plc vs GSK plc
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
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.
GSK plc
GSK · London Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Comparison highlights
- Moat score gap: Aon plc leads (70 / 100 vs 62 / 100 for GSK plc).
- Segment focus: Aon plc has 2 segments (67% in Risk Capital); GSK plc has 3 segments (37.6% in Specialty Medicines).
- Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
- Moat breadth: Aon plc has 6 moat types across 3 domains; GSK plc has 4 across 3.
Primary market context
Aon plc
Risk Capital
Large-account commercial insurance & reinsurance brokerage and risk advisory
Global
Enterprises, insurers, reinsurers
Intermediary/advisor
67%
GSK plc
Specialty Medicines
Branded specialty pharmaceuticals (HIV, oncology, immunology/respiratory)
Global
Hospitals, specialist physicians, payers
Innovator & branded manufacturer
37.6%
Side-by-side metrics
Moat coverage
Shared moat types
Aon plc strengths
GSK plc strengths
Segment mix
Aon plc segments
Full profile >Risk Capital
Oligopoly
Human Capital
Oligopoly
GSK plc segments
Full profile >Vaccines
Oligopoly
Specialty Medicines
Oligopoly
General Medicines
Competitive
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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 Pricing, features, and availability may be incomplete or out of date.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.