VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Friday, January 2, 2026
Stock Comparison
General Dynamics Corporation vs Martin Marietta Materials, 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 analysisMartin Marietta Materials, Inc.
MLM · NYSE
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Martin Marietta Materials, Inc.'s moat claims, evidence, and risks.
View MLM analysisComparison highlights
- Moat score gap: General Dynamics Corporation leads (80 / 100 vs 78 / 100 for Martin Marietta Materials, Inc.).
- Segment focus: General Dynamics Corporation has 4 segments (30.1% in Marine Systems (Nuclear subs + surface shipbuilding)); Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group).
- Primary market structure: Duopoly vs Oligopoly. Pricing power: Weak vs Strong.
- Moat breadth: General Dynamics Corporation has 11 moat types across 3 domains; Martin Marietta Materials, Inc. has 4 across 2.
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%
Martin Marietta Materials, Inc.
East Group
Construction aggregates and asphalt products (crushed stone, sand & gravel; asphalt) in local/regional markets
United States (East/Southeast and adjacent regions)
Infrastructure agencies, construction contractors, and downstream materials producers (asphalt/ready-mix)
Quarry/mining operator and building materials producer/distributor
52.4%
Side-by-side metrics
Moat coverage
Shared moat types
General Dynamics Corporation strengths
Martin Marietta Materials, 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
Martin Marietta Materials, Inc. segments
Full profile >East Group
Oligopoly
West Group
Oligopoly
Specialties (formerly Magnesia Specialties)
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.