VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

IDEXX Laboratories, Inc. vs Thermo Fisher Scientific Inc.

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

IDEXX Laboratories, Inc.

IDXX · NASDAQ

Market cap (USD)$54.9B
SectorHealthcare
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

Thermo Fisher Scientific Inc.

TMO · New York Stock Exchange

Market cap (USD)$213.3B
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
64/ 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 Thermo Fisher Scientific Inc.'s moat claims, evidence, and risks.

View TMO analysis

Comparison highlights

  • Moat score gap: IDEXX Laboratories, Inc. leads (82 / 100 vs 64 / 100 for Thermo Fisher Scientific Inc.).
  • Segment focus: IDEXX Laboratories, Inc. has 4 segments (91.7% in Companion Animal Group); Thermo Fisher Scientific Inc. has 4 segments (53.6% in Laboratory Products and Biopharma Services).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Strong vs Moderate.
  • Moat breadth: IDEXX Laboratories, Inc. has 5 moat types across 3 domains; Thermo Fisher Scientific Inc. has 8 across 3.

Primary market context

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%

Thermo Fisher Scientific Inc.

Laboratory Products and Biopharma Services

Market

Laboratory supplies distribution/market channel plus outsourced biopharma services (CDMO/CRO)

Geography

Global

Customer

Pharma & biotech; academic/government labs; industrial and clinical laboratories

Role

Distributor/market channel and outsourced services provider

Revenue share

53.6%

Side-by-side metrics

IDEXX Laboratories, Inc.
Thermo Fisher Scientific Inc.
Ticker / Exchange
IDXX - NASDAQ
TMO - New York Stock Exchange
Market cap (USD)
$54.9B
$213.3B
Sector
Healthcare
Healthcare
HQ country
US
US
Primary segment
Companion Animal Group
Laboratory Products and Biopharma Services
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
82 / 100
64 / 100
Moat domains
Demand, Supply, Legal
Demand, Supply, Legal
Last update
2025-12-31
2025-12-22

Moat coverage

Shared moat types

Installed Base ConsumablesRegulated Standards Pipe

IDEXX Laboratories, Inc. strengths

Data Workflow LockinPhysical Network DensityCompliance Advantage

Thermo Fisher Scientific Inc. strengths

Format Lock InBrand TrustService Field NetworkDistribution ControlProcurement InertiaCapacity Moat

Segment mix

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%

Thermo Fisher Scientific Inc. segments

Full profile >

Life Sciences Solutions

Oligopoly

19%

Analytical Instruments

Oligopoly

17%

Specialty Diagnostics

Oligopoly

10.4%

Laboratory Products and Biopharma Services

Competitive

53.6%

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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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.