VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Stock Comparison

DexCom, Inc. vs EssilorLuxottica

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

EssilorLuxottica

EL · Euronext Paris

Market cap (USD)$100.4B
Gross margin (TTM)61.5%
Operating margin (TTM)12.4%
Net margin (TTM)8.5%
SectorHealthcare
IndustryMedical - Instruments & Supplies
CountryFR
Data as of2026-01-11
Moat score
69/ 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 EssilorLuxottica's moat claims, evidence, and risks.

View EL analysis

Comparison highlights

  • Moat score gap: DexCom, Inc. leads (82 / 100 vs 69 / 100 for EssilorLuxottica).
  • Segment focus: DexCom, Inc. has 1 segment (100% in Continuous glucose monitoring systems); EssilorLuxottica has 2 segments (52.7% in Direct to Consumer).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: DexCom, Inc. has 5 moat types across 3 domains; EssilorLuxottica 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%

EssilorLuxottica

Direct to Consumer

Market

Optical retail and e-commerce (prescription eyewear and sunglasses)

Geography

Global

Customer

Consumers (end-users)

Role

Omnichannel retailer + vertically integrated manufacturer/brand owner

Revenue share

52.7%

Side-by-side metrics

DexCom, Inc.
EssilorLuxottica
Ticker / Exchange
DXCM - Nasdaq Global Select Market
EL - Euronext Paris
Market cap (USD)
$23.6B
$100.4B
Gross margin (TTM)
60.1%
61.5%
Operating margin (TTM)
19.6%
12.4%
Net margin (TTM)
17.9%
8.5%
Sector
Healthcare
Healthcare
Industry
Medical - Devices
Medical - Instruments & Supplies
HQ country
US
FR
Primary segment
Continuous glucose monitoring systems
Direct to Consumer
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
69 / 100
Moat domains
Demand, Network, Legal
Legal, Supply, Demand
Last update
2026-04-24
2026-01-11

Moat coverage

Shared moat types

Brand Trust

DexCom, Inc. strengths

Installed Base ConsumablesEcosystem ComplementsRegulated Standards PipeData Workflow Lockin

EssilorLuxottica strengths

IP Choke PointDistribution ControlScale Economies Unit CostContractual Exclusivity

Segment mix

DexCom, Inc. segments

Full profile >

Continuous glucose monitoring systems

Oligopoly

100%

EssilorLuxottica segments

Full profile >

Professional Solutions

Oligopoly

47.3%

Direct to Consumer

Competitive

52.7%

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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.