VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

Stock Comparison

Martin Marietta Materials, Inc. vs MTU Aero Engines AG

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

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

MTU Aero Engines AG

MTX · Deutsche Boerse XETRA

Market cap (USD)$20B
Gross margin (TTM)12.7%
Operating margin (TTM)3%
Net margin (TTM)6.1%
SectorIndustrials
IndustryAerospace & Defense
CountryDE
Data as of2025-12-28
Moat score
61/ 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 MTU Aero Engines AG's moat claims, evidence, and risks.

View MTX analysis

Comparison highlights

  • Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 61 / 100 for MTU Aero Engines AG).
  • Segment focus: Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group); MTU Aero Engines AG has 2 segments (67.4% in MRO business (commercial maintenance)).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Strong vs Moderate.
  • Moat breadth: Martin Marietta Materials, Inc. has 4 moat types across 2 domains; MTU Aero Engines AG has 8 across 3.

Primary market context

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%

MTU Aero Engines AG

MRO business (commercial maintenance)

Market

Commercial aircraft engine maintenance, repair and overhaul (engine MRO) and associated services

Geography

Global

Customer

Airlines, lessors and engine owners/operators

Role

Aftermarket service provider (engine shop visits, repairs, on-wing services, leasing/asset management)

Revenue share

67.4%

Side-by-side metrics

Martin Marietta Materials, Inc.
MTU Aero Engines AG
Ticker / Exchange
MLM - NYSE
MTX - Deutsche Boerse XETRA
Market cap (USD)
$37.9B
$20B
Gross margin (TTM)
n/a
12.7%
Operating margin (TTM)
n/a
3%
Net margin (TTM)
n/a
6.1%
Sector
Materials
Industrials
Industry
Construction Materials
Aerospace & Defense
HQ country
US
DE
Primary segment
East Group
MRO business (commercial maintenance)
Market structure
Oligopoly
Competitive
Market share
n/a
10% (reported)
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
78 / 100
61 / 100
Moat domains
Supply, Financial
Demand, Supply, Legal
Last update
2026-01-01
2025-12-28

Moat coverage

Shared moat types

Capex Knowhow Scale

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalBenchmark Pricing Power

MTU Aero Engines AG strengths

Design In QualificationScope EconomiesGovernment Contracting RelationshipsService Field NetworkOperational ExcellencePreferential Input AccessLong Term Contracts

Segment mix

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

MTU Aero Engines AG segments

Full profile >

OEM business (commercial and military engine business)

Oligopoly

32.6%

MRO business (commercial maintenance)

Competitive

67.4%

Want the full wide moat stocks list?

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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.