VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, January 7, 2026

Stock Comparison

MTU Aero Engines AG vs Paychex, Inc.

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

MTU Aero Engines AG

MTX · Deutsche Boerse XETRA

Market cap (USD)$20.5B
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

Paychex, Inc.

PAYX · NASDAQ Global Select Market

Market cap (USD)$39.4B
Gross margin (TTM)73.4%
Operating margin (TTM)37.1%
Net margin (TTM)26.5%
SectorIndustrials
IndustryStaffing & Employment Services
CountryUS
Data as of2026-01-04
Moat score
66/ 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 Paychex, Inc.'s moat claims, evidence, and risks.

View PAYX analysis

Comparison highlights

  • Moat score gap: Paychex, Inc. leads (66 / 100 vs 61 / 100 for MTU Aero Engines AG).
  • Segment focus: MTU Aero Engines AG has 2 segments (67.4% in MRO business (commercial maintenance)); Paychex, Inc. has 3 segments (73% in Management Solutions).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: MTU Aero Engines AG has 8 moat types across 3 domains; Paychex, Inc. has 7 across 4.

Primary market context

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%

Paychex, Inc.

Management Solutions

Market

Payroll processing and integrated HCM solutions for SMB and mid-market employers

Geography

United States (primarily)

Customer

Employers (SMB and mid-market)

Role

HCM SaaS + outsourced payroll/HR service provider

Revenue share

73%

Side-by-side metrics

MTU Aero Engines AG
Paychex, Inc.
Ticker / Exchange
MTX - Deutsche Boerse XETRA
PAYX - NASDAQ Global Select Market
Market cap (USD)
$20.5B
$39.4B
Gross margin (TTM)
12.7%
73.4%
Operating margin (TTM)
3%
37.1%
Net margin (TTM)
6.1%
26.5%
Sector
Industrials
Industrials
Industry
Aerospace & Defense
Staffing & Employment Services
HQ country
DE
US
Primary segment
MRO business (commercial maintenance)
Management Solutions
Market structure
Competitive
Oligopoly
Market share
10% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
61 / 100
66 / 100
Moat domains
Demand, Supply, Legal
Demand, Supply, Legal, Financial
Last update
2025-12-28
2026-01-04

Moat coverage

Shared moat types

Service Field Network

MTU Aero Engines AG strengths

Design In QualificationScope EconomiesCapex Knowhow ScaleGovernment Contracting RelationshipsOperational ExcellencePreferential Input AccessLong Term Contracts

Paychex, Inc. strengths

Data Workflow LockinSuite BundlingCompliance AdvantageUnderwriting Risk PoolingSwitching Costs GeneralFloat Prepayment

Segment mix

MTU Aero Engines AG segments

Full profile >

OEM business (commercial and military engine business)

Oligopoly

32.6%

MRO business (commercial maintenance)

Competitive

67.4%

Paychex, Inc. segments

Full profile >

Management Solutions

Oligopoly

73%

PEO and Insurance Solutions

Competitive

24.1%

Client funds float (interest on funds held for clients)

Oligopoly

2.9%

Want the full wide moat stocks list?

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Proven models entering the expansion stage with unit economics that work.

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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.