VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Friday, January 2, 2026
Stock Comparison
Martin Marietta Materials, Inc. vs O'Reilly Automotive, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Martin 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 analysisO'Reilly Automotive, Inc.
ORLY · Nasdaq Global Select Market
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into O'Reilly Automotive, Inc.'s moat claims, evidence, and risks.
View ORLY analysisComparison highlights
- Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 63 / 100 for O'Reilly Automotive, Inc.).
- Segment focus: Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group); O'Reilly Automotive, Inc. has 2 segments (52% in DIY Aftermarket Retail).
- Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
- Moat breadth: Martin Marietta Materials, Inc. has 4 moat types across 2 domains; O'Reilly Automotive, Inc. has 7 across 2.
Primary market context
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%
O'Reilly Automotive, Inc.
DIY Aftermarket Retail
Specialty automotive aftermarket parts retail (DIY channel)
United States, Puerto Rico, Mexico, Canada
Consumers (do-it-yourself vehicle owners)
Specialty retailer
52%
Side-by-side metrics
Moat coverage
Shared moat types
Martin Marietta Materials, Inc. strengths
O'Reilly Automotive, Inc. strengths
Segment mix
Martin Marietta Materials, Inc. segments
Full profile >East Group
Oligopoly
West Group
Oligopoly
Specialties (formerly Magnesia Specialties)
Oligopoly
O'Reilly Automotive, Inc. segments
Full profile >DIY Aftermarket Retail
Oligopoly
Professional (B2B) Aftermarket Distribution
Competitive
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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.