VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Halma plc vs West Pharmaceutical Services, Inc.

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

Halma plc

HLMA · London Stock Exchange

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorTechnology
Industry
CountryGB
Data as of2026-01-02
Moat score
59/ 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 Halma plc's moat claims, evidence, and risks.

View HLMA analysis

West Pharmaceutical Services, Inc.

WST · New York Stock Exchange

Market cap (USD)$19.6B
Gross margin (TTM)35.6%
Operating margin (TTM)20.9%
Net margin (TTM)16.3%
SectorHealthcare
IndustryMedical - Instruments & Supplies
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.

Full stock profile

Dive deeper into West Pharmaceutical Services, Inc.'s moat claims, evidence, and risks.

View WST analysis

Comparison highlights

  • Moat score gap: West Pharmaceutical Services, Inc. leads (85 / 100 vs 59 / 100 for Halma plc).
  • Segment focus: Halma plc has 3 segments (40% in Safety); West Pharmaceutical Services, Inc. has 2 segments (80.7% in Proprietary Products).
  • Primary market structure: Competitive vs Quasi-Monopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: Halma plc has 4 moat types across 2 domains; West Pharmaceutical Services, Inc. has 5 across 3.

Primary market context

Halma plc

Safety

Market

Safety technologies (fire safety, public safety, worker safety, and protection of critical assets/infrastructure)

Geography

Global

Customer

Commercial/industrial facility owners and operators; infrastructure operators; installers and OEM channels

Role

Technology OEM / component + systems supplier

Revenue share

40%

West Pharmaceutical Services, Inc.

Proprietary Products

Market

Injectable primary packaging components and containment/delivery systems (elastomeric stoppers, seals, plungers, syringe/cartridge components; related services)

Geography

Global

Customer

Biologic, generic, and pharmaceutical drug manufacturers

Role

Primary packaging and delivery component supplier

Revenue share

80.7%

Side-by-side metrics

Halma plc
West Pharmaceutical Services, Inc.
Ticker / Exchange
HLMA - London Stock Exchange
WST - New York Stock Exchange
Market cap (USD)
n/a
$19.6B
Gross margin (TTM)
n/a
35.6%
Operating margin (TTM)
n/a
20.9%
Net margin (TTM)
n/a
16.3%
Sector
Technology
Healthcare
Industry
n/a
Medical - Instruments & Supplies
HQ country
GB
US
Primary segment
Safety
Proprietary Products
Market structure
Competitive
Quasi-Monopoly
Market share
n/a
70%-75% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
59 / 100
85 / 100
Moat domains
Legal, Demand
Demand, Legal, Supply
Last update
2026-01-02
2025-12-22

Moat coverage

Shared moat types

Compliance AdvantageDesign In Qualification

Halma plc strengths

Procurement InertiaSwitching Costs General

West Pharmaceutical Services, Inc. strengths

Brand TrustCapex Knowhow ScaleOperational Excellence

Segment mix

Halma plc segments

Full profile >

Safety

Competitive

40%

Environmental & Analysis

Competitive

35%

Healthcare

Competitive

25%

West Pharmaceutical Services, Inc. segments

Full profile >

Proprietary Products

Quasi-Monopoly

80.7%

Contract-Manufactured Products

Competitive

19.3%

Want the full wide moat stocks list?

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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.