VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Friday, January 2, 2026
Stock Comparison
Intuitive Surgical, Inc. vs Martin Marietta Materials, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Intuitive Surgical, Inc.
ISRG · NASDAQ
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Intuitive Surgical, Inc.'s moat claims, evidence, and risks.
View ISRG 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: Intuitive Surgical, Inc. leads (83 / 100 vs 78 / 100 for Martin Marietta Materials, Inc.).
- Segment focus: Intuitive Surgical, Inc. has 3 segments (60.8% in Instruments and Accessories); Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group).
- Primary market structure: Monopoly vs Oligopoly. Pricing power: Strong vs Strong.
- Moat breadth: Intuitive Surgical, Inc. has 9 moat types across 4 domains; Martin Marietta Materials, Inc. has 4 across 2.
Primary market context
Intuitive Surgical, Inc.
Instruments and Accessories
Proprietary robotic surgery instruments, accessories, and consumables used per procedure on the da Vinci (and Ion) installed base
Global
Hospitals and surgery centers purchasing consumables; surgeons and OR teams as end users
Consumables OEM within proprietary platform
60.8%
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
Intuitive Surgical, Inc. strengths
Martin Marietta Materials, Inc. strengths
Segment mix
Intuitive Surgical, Inc. segments
Full profile >Systems
Quasi-Monopoly
Instruments and Accessories
Monopoly
Services
Monopoly
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.