VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Stock Comparison

DexCom, Inc. vs Johnson & Johnson

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

Johnson & Johnson

JNJ · New York Stock Exchange

Market cap (USD)$555.8B
Gross margin (TTM)69.1%
Operating margin (TTM)26.9%
Net margin (TTM)21.8%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-21
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 Johnson & Johnson's moat claims, evidence, and risks.

View JNJ analysis

Comparison highlights

  • Moat score gap: DexCom, Inc. leads (82 / 100 vs 61 / 100 for Johnson & Johnson).
  • Segment focus: DexCom, Inc. has 1 segment (100% in Continuous glucose monitoring systems); Johnson & Johnson has 2 segments (64.1% in Innovative Medicine).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: DexCom, Inc. has 5 moat types across 3 domains; Johnson & Johnson has 5 across 3.

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%

Johnson & Johnson

Innovative Medicine

Market

Branded prescription pharmaceuticals (biopharma)

Geography

Global

Customer

Wholesalers, hospitals, retailers, healthcare professionals, payers

Role

Drug discovery, development, manufacturing, commercialization

Revenue share

64.1%

Side-by-side metrics

DexCom, Inc.
Johnson & Johnson
Ticker / Exchange
DXCM - Nasdaq Global Select Market
JNJ - New York Stock Exchange
Market cap (USD)
$23.6B
$555.8B
Gross margin (TTM)
60.1%
69.1%
Operating margin (TTM)
19.6%
26.9%
Net margin (TTM)
17.9%
21.8%
Sector
Healthcare
Healthcare
Industry
Medical - Devices
Drug Manufacturers - General
HQ country
US
US
Primary segment
Continuous glucose monitoring systems
Innovative Medicine
Market structure
Oligopoly
Competitive
Market share
35.1% (estimated)
n/a
HHI estimate
4,452
n/a
Pricing power
Moderate
Moderate
Moat score
82 / 100
61 / 100
Moat domains
Demand, Network, Legal
Legal, Demand, Supply
Last update
2026-04-24
2025-12-21

Moat coverage

Shared moat types

Regulated Standards PipeBrand Trust

DexCom, Inc. strengths

Installed Base ConsumablesEcosystem ComplementsData Workflow Lockin

Johnson & Johnson strengths

IP Choke PointTraining Org Change CostsService Field Network

Segment mix

DexCom, Inc. segments

Full profile >

Continuous glucose monitoring systems

Oligopoly

100%

Johnson & Johnson segments

Full profile >

Innovative Medicine

Competitive

64.1%

MedTech

Oligopoly

35.9%

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.