VOL. XCIV, NO. 247

* MOAT STOCKS COMPARISON *

NO ADVICE

Friday, December 26, 2025

Stock Comparison

West Pharmaceutical Services, Inc. vs Zoetis Inc.

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

West Pharmaceutical Services, Inc.

WST · New York Stock Exchange

Market cap (USD)
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
85/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

View full moat analysis >

Zoetis Inc.

ZTS · New York Stock Exchange

Market cap (USD)$55.3B
SectorHealthcare
CountryUS
Data as of2025-12-26
Moat score
73/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

View full moat analysis >

Side-by-side metrics

West Pharmaceutical Services, Inc.
Zoetis Inc.
Ticker / Exchange
WST - New York Stock Exchange
ZTS - New York Stock Exchange
Market cap (USD)
n/a
$55.3B
Sector
Healthcare
Healthcare
HQ country
US
US
Primary segment
Proprietary Products
Companion Animal Products
Market structure
Quasi-Monopoly
Oligopoly
Market share
70%-75% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
85 / 100
73 / 100
Moat domains
Demand, Legal, Supply
Demand, Supply, Legal
Last update
2025-12-22
2025-12-26

Moat coverage

Shared moat types

Compliance AdvantageBrand TrustOperational Excellence

West Pharmaceutical Services, Inc. strengths

Design In QualificationCapex Knowhow Scale

Zoetis Inc. strengths

Service Field NetworkRegulated Standards PipeIP Choke PointInstalled Base ConsumablesCapacity MoatDistribution Control

Segment mix

West Pharmaceutical Services, Inc. segments

Full profile >

Proprietary Products

Quasi-Monopoly

80.7%

Contract-Manufactured Products

Competitive

19.3%

Zoetis Inc. segments

Full profile >

Companion Animal Products

Oligopoly

67.8%

Livestock Products

Oligopoly

31.3%

Client Supply Services & Human Health

Competitive

0.9%

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 Pricing, features, and availability may be incomplete or out of date.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.