VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Tuesday, December 30, 2025
Stock Comparison
General Dynamics Corporation vs Merck & Co., Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
General Dynamics Corporation
GD · 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 General Dynamics Corporation's moat claims, evidence, and risks.
View GD 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: General Dynamics Corporation leads (80 / 100 vs 71 / 100 for Merck & Co., Inc.).
- Segment focus: General Dynamics Corporation has 4 segments (30.1% in Marine Systems (Nuclear subs + surface shipbuilding)); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
- Primary market structure: Duopoly vs Competitive. Pricing power: Weak vs Moderate.
- Moat breadth: General Dynamics Corporation has 11 moat types across 3 domains; Merck & Co., Inc. has 5 across 3.
Primary market context
General Dynamics Corporation
Marine Systems (Nuclear subs + surface shipbuilding)
U.S. Navy nuclear-powered submarine construction and major surface combatant shipbuilding/lifecycle services
United States
Government (primarily U.S. Navy)
Prime contractor / shipbuilder / lifecycle services
30.1%
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
General Dynamics Corporation strengths
Merck & Co., Inc. strengths
Segment mix
General Dynamics Corporation segments
Full profile >Aerospace (Gulfstream + Jet Aviation)
Oligopoly
Marine Systems (Nuclear subs + surface shipbuilding)
Duopoly
Combat Systems (Land vehicles + munitions)
Oligopoly
Technologies (C5ISR + Federal IT)
Competitive
Merck & Co., Inc. segments
Full profile >Pharmaceutical
Competitive
Animal Health
Oligopoly
Want the full wide moat stocks list?
Browse the full ranking of wide moat stocks, updated with moat scores and segment context.
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.