VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

Stock Comparison

WuXi AppTec Co., Ltd. vs IDEXX Laboratories, Inc.

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

WuXi AppTec Co., Ltd.

603259 · Shanghai Stock Exchange

Market cap (USD)$37.4B
Gross margin (TTM)49.2%
Operating margin (TTM)42.7%
Net margin (TTM)41.7%
SectorHealthcare
IndustryMedical - Diagnostics & Research
CountryCN
Data as of2026-05-01
Moat score
72/ 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 WuXi AppTec Co., Ltd.'s moat claims, evidence, and risks.

View 603259 analysis

IDEXX Laboratories, Inc.

IDXX · NASDAQ

Market cap (USD)$43.6B
Gross margin (TTM)62.1%
Operating margin (TTM)31.6%
Net margin (TTM)24.6%
SectorHealthcare
IndustryMedical - Diagnostics & Research
CountryUS
Data as of2025-12-31
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 IDEXX Laboratories, Inc.'s moat claims, evidence, and risks.

View IDXX analysis

Comparison highlights

  • Moat score gap: IDEXX Laboratories, Inc. leads (82 / 100 vs 72 / 100 for WuXi AppTec Co., Ltd.).
  • Segment focus: WuXi AppTec Co., Ltd. has 3 segments (84% in WuXi Chemistry); IDEXX Laboratories, Inc. has 4 segments (91.7% in Companion Animal Group).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: WuXi AppTec Co., Ltd. has 5 moat types across 3 domains; IDEXX Laboratories, Inc. has 5 across 3.

Primary market context

WuXi AppTec Co., Ltd.

WuXi Chemistry

Market

Global synthetic-molecule CRDMO services, including small-molecule discovery, process development, API manufacturing, peptides and oligonucleotides

Geography

Global, with major customer exposure to the United States, Europe and China

Customer

Large pharmaceutical companies, emerging biotechs and virtual pharma companies

Role

Integrated contract research, development and manufacturing partner across discovery, development and commercial manufacturing

Revenue share

84%

IDEXX Laboratories, Inc.

Companion Animal Group

Market

Veterinary diagnostics and practice management software for companion animals

Geography

Global

Customer

Veterinary practices, corporate veterinary groups, and reference laboratories

Role

Diagnostics platform owner (in-clinic instruments + consumables) and reference lab/service provider; practice management software provider

Revenue share

91.7%

Side-by-side metrics

WuXi AppTec Co., Ltd.
IDEXX Laboratories, Inc.
Ticker / Exchange
603259 - Shanghai Stock Exchange
IDXX - NASDAQ
Market cap (USD)
$37.4B
$43.6B
Gross margin (TTM)
49.2%
62.1%
Operating margin (TTM)
42.7%
31.6%
Net margin (TTM)
41.7%
24.6%
Sector
Healthcare
Healthcare
Industry
Medical - Diagnostics & Research
Medical - Diagnostics & Research
HQ country
CN
US
Primary segment
WuXi Chemistry
Companion Animal Group
Market structure
Competitive
Oligopoly
Market share
6%-9% (implied)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
72 / 100
82 / 100
Moat domains
Supply, Demand, Legal
Demand, Supply, Legal
Last update
2026-05-01
2025-12-31

Moat coverage

Shared moat types

Compliance Advantage

WuXi AppTec Co., Ltd. strengths

Scope EconomiesDesign In QualificationCapacity MoatOperational Excellence

IDEXX Laboratories, Inc. strengths

Installed Base ConsumablesData Workflow LockinPhysical Network DensityRegulated Standards Pipe

Segment mix

WuXi AppTec Co., Ltd. segments

Full profile >

WuXi Chemistry

Competitive

84%

WuXi Testing

Competitive

9.3%

WuXi Biology

Competitive

6.2%

IDEXX Laboratories, Inc. segments

Full profile >

Companion Animal Group

Oligopoly

91.7%

Water Quality Products

Oligopoly

4.7%

Livestock, Poultry and Dairy

Competitive

3.1%

Other (OPTI Medical and out-licensing)

Competitive

0.4%

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.