VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, January 7, 2026

Stock Comparison

BAE Systems plc vs ResMed Inc.

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

BAE Systems plc

BA. · London Stock Exchange

Market cap (USD)$55.2B
Gross margin (TTM)8.6%
Operating margin (TTM)9.3%
Net margin (TTM)7.4%
SectorIndustrials
IndustryAerospace & Defense
CountryGB
Data as of2025-12-28
Moat score
75/ 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 BAE Systems plc's moat claims, evidence, and risks.

View BA. analysis

ResMed Inc.

RMD · New York Stock Exchange

Market cap (USD)$36B
Gross margin (TTM)60.1%
Operating margin (TTM)33.2%
Net margin (TTM)27.4%
SectorHealthcare
IndustryMedical - Instruments & Supplies
CountryUS
Data as of2026-01-04
Moat score
76/ 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 ResMed Inc.'s moat claims, evidence, and risks.

View RMD analysis

Comparison highlights

  • Moat score gap: ResMed Inc. leads (76 / 100 vs 75 / 100 for BAE Systems plc).
  • Segment focus: BAE Systems plc has 5 segments (26.6% in Electronic Systems); ResMed Inc. has 2 segments (87.5% in Sleep and Breathing Health).
  • Moat breadth: BAE Systems plc has 8 moat types across 3 domains; ResMed Inc. has 7 across 2.

Primary market context

BAE Systems plc

Electronic Systems

Market

Defence electronics (electronic warfare, avionics, C4ISR, space payloads and mission systems)

Geography

Primarily US and UK; global programmes

Customer

Government defence and intelligence agencies; prime contractors

Role

Subsystem OEM and prime contractor for electronics/mission systems

Revenue share

26.6%

ResMed Inc.

Sleep and Breathing Health

Market

Sleep apnea and respiratory care devices and related consumables (PAP, masks, ventilation) plus connected monitoring services

Geography

Global

Customer

DME/HME providers, sleep clinics, hospitals, patients

Role

Medical device OEM + connected care software/data services

Revenue share

87.5%

Side-by-side metrics

BAE Systems plc
ResMed Inc.
Ticker / Exchange
BA. - London Stock Exchange
RMD - New York Stock Exchange
Market cap (USD)
$55.2B
$36B
Gross margin (TTM)
8.6%
60.1%
Operating margin (TTM)
9.3%
33.2%
Net margin (TTM)
7.4%
27.4%
Sector
Industrials
Healthcare
Industry
Aerospace & Defense
Medical - Instruments & Supplies
HQ country
GB
US
Primary segment
Electronic Systems
Sleep and Breathing Health
Market structure
Oligopoly
Oligopoly
Market share
n/a
58%-66% (estimated)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
75 / 100
76 / 100
Moat domains
Legal, Demand, Supply
Demand, Legal
Last update
2025-12-28
2026-01-04

Moat coverage

Shared moat types

Compliance AdvantageLong Term Contracts

BAE Systems plc strengths

Government Contracting RelationshipsDesign In QualificationService Field NetworkCapex Knowhow ScaleCapacity MoatSwitching Costs General

ResMed Inc. strengths

Installed Base ConsumablesData Workflow LockinBrand TrustIP Choke PointTraining Org Change Costs

Segment mix

BAE Systems plc segments

Full profile >

Electronic Systems

Oligopoly

26.6%

Platforms & Services

Oligopoly

16.3%

Air

Oligopoly

26%

Maritime

Oligopoly

22.5%

Cyber & Intelligence

Competitive

8.6%

ResMed Inc. segments

Full profile >

Sleep and Breathing Health

Oligopoly

87.5%

Residential Care Software

Competitive

12.5%

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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Looking for expansion-stage stocks?

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.