VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

Stock Comparison

OMRON Corporation vs Martin Marietta Materials, Inc.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

OMRON Corporation

6645 · Tokyo Stock Exchange

Market cap (USD)$779.4B
Gross margin (TTM)43.8%
Operating margin (TTM)6.4%
Net margin (TTM)3.5%
SectorIndustrials
IndustryHardware, Equipment & Parts
CountryJP
Data as of2025-12-30
Moat score
59/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into OMRON Corporation's moat claims, evidence, and risks.

View 6645 analysis

Martin Marietta Materials, Inc.

MLM · NYSE

Market cap (USD)$37.9B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorMaterials
IndustryConstruction Materials
CountryUS
Data as of2026-01-01
Moat score
78/ 100

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 analysis

Comparison highlights

  • Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 59 / 100 for OMRON Corporation).
  • Segment focus: OMRON Corporation has 5 segments (45% in Industrial Automation Business (IAB)); Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: OMRON Corporation has 7 moat types across 4 domains; Martin Marietta Materials, Inc. has 4 across 2.

Primary market context

OMRON Corporation

Industrial Automation Business (IAB)

Market

Industrial automation components and factory automation solutions (sensors, controllers, safety, robotics, OT/IT services)

Geography

Global

Customer

Manufacturers and machine builders (B2B)

Role

Automation supplier + solutions/services provider

Revenue share

45%

Martin Marietta Materials, Inc.

East Group

Market

Construction aggregates and asphalt products (crushed stone, sand & gravel; asphalt) in local/regional markets

Geography

United States (East/Southeast and adjacent regions)

Customer

Infrastructure agencies, construction contractors, and downstream materials producers (asphalt/ready-mix)

Role

Quarry/mining operator and building materials producer/distributor

Revenue share

52.4%

Side-by-side metrics

OMRON Corporation
Martin Marietta Materials, Inc.
Ticker / Exchange
6645 - Tokyo Stock Exchange
MLM - NYSE
Market cap (USD)
$779.4B
$37.9B
Gross margin (TTM)
43.8%
n/a
Operating margin (TTM)
6.4%
n/a
Net margin (TTM)
3.5%
n/a
Sector
Industrials
Materials
Industry
Hardware, Equipment & Parts
Construction Materials
HQ country
JP
US
Primary segment
Industrial Automation Business (IAB)
East Group
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
59 / 100
78 / 100
Moat domains
Supply, Demand, Legal, Network
Supply, Financial
Last update
2025-12-30
2026-01-01

Moat coverage

Shared moat types

No overlap yet.

OMRON Corporation strengths

Service Field NetworkData Workflow LockinBrand TrustCompliance AdvantageProcurement InertiaLearning Curve YieldData Network Effects

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalBenchmark Pricing PowerCapex Knowhow Scale

Segment mix

OMRON Corporation segments

Full profile >

Industrial Automation Business (IAB)

Oligopoly

45%

Healthcare Business (HCB)

Competitive

18.2%

Social Systems, Solutions and Service Business (SSB)

Oligopoly

18.2%

Device and Module Solutions Business (DMB)

Competitive

13.2%

Data Solution Business (DSB)

Oligopoly

5.3%

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

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Curation & 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.