VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Stock Comparison

DexCom, Inc. vs ResMed Inc.

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

DexCom, Inc.

DXCM · Nasdaq Global Select Market

Market cap (USD)$23.6B
Gross margin (TTM)60.1%
Operating margin (TTM)19.6%
Net margin (TTM)17.9%
SectorHealthcare
IndustryMedical - Devices
CountryUS
Data as of2026-04-24
Moat score
82/ 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 DexCom, Inc.'s moat claims, evidence, and risks.

View DXCM analysis

ResMed Inc.

RMD · New York Stock Exchange

Market cap (USD)$32B
Gross margin (TTM)61%
Operating margin (TTM)33.8%
Net margin (TTM)27.5%
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: DexCom, Inc. leads (82 / 100 vs 76 / 100 for ResMed Inc.).
  • Segment focus: DexCom, Inc. has 1 segment (100% in Continuous glucose monitoring systems); ResMed Inc. has 2 segments (87.5% in Sleep and Breathing Health).
  • Moat breadth: DexCom, Inc. has 5 moat types across 3 domains; ResMed Inc. has 7 across 2.

Primary market context

DexCom, Inc.

Continuous glucose monitoring systems

Market

Global continuous glucose monitoring systems and glucose biosensing devices

Geography

Global, with FY2025 revenue 71.5% United States and 28.5% international

Customer

People with diabetes, metabolic-health users, caregivers, clinicians, payors, distributors and pharmacy channels

Role

CGM device manufacturer, disposable sensor supplier, software/data platform and distribution partner

Revenue share

100%

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

DexCom, Inc.
ResMed Inc.
Ticker / Exchange
DXCM - Nasdaq Global Select Market
RMD - New York Stock Exchange
Market cap (USD)
$23.6B
$32B
Gross margin (TTM)
60.1%
61%
Operating margin (TTM)
19.6%
33.8%
Net margin (TTM)
17.9%
27.5%
Sector
Healthcare
Healthcare
Industry
Medical - Devices
Medical - Instruments & Supplies
HQ country
US
US
Primary segment
Continuous glucose monitoring systems
Sleep and Breathing Health
Market structure
Oligopoly
Oligopoly
Market share
35.1% (estimated)
58%-66% (estimated)
HHI estimate
4,452
n/a
Pricing power
Moderate
Moderate
Moat score
82 / 100
76 / 100
Moat domains
Demand, Network, Legal
Demand, Legal
Last update
2026-04-24
2026-01-04

Moat coverage

Shared moat types

Installed Base ConsumablesData Workflow LockinBrand Trust

DexCom, Inc. strengths

Ecosystem ComplementsRegulated Standards Pipe

ResMed Inc. strengths

Compliance AdvantageIP Choke PointLong Term ContractsTraining Org Change Costs

Segment mix

DexCom, Inc. segments

Full profile >

Continuous glucose monitoring systems

Oligopoly

100%

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?

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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.