VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

BJ's Wholesale Club Holdings, Inc. vs West Pharmaceutical Services, Inc.

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

BJ's Wholesale Club Holdings, Inc.

BJ · New York Stock Exchange

Market cap (USD)$12.3B
Gross margin (TTM)18.6%
Operating margin (TTM)3.9%
Net margin (TTM)2.7%
SectorConsumer
IndustryDiscount Stores
CountryUS
Data as of2026-01-06
Moat score
60/ 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 BJ's Wholesale Club Holdings, Inc.'s moat claims, evidence, and risks.

View BJ analysis

West Pharmaceutical Services, Inc.

WST · New York Stock Exchange

Market cap (USD)$20.1B
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 60 / 100 for BJ's Wholesale Club Holdings, Inc.).
  • Segment focus: BJ's Wholesale Club Holdings, Inc. has 2 segments (97.8% in Merchandise and Gasoline Sales); West Pharmaceutical Services, Inc. has 2 segments (80.7% in Proprietary Products).
  • Primary market structure: Oligopoly vs Quasi-Monopoly. Pricing power: Weak vs Moderate.
  • Moat breadth: BJ's Wholesale Club Holdings, Inc. has 7 moat types across 3 domains; West Pharmaceutical Services, Inc. has 5 across 3.

Primary market context

BJ's Wholesale Club Holdings, Inc.

Merchandise and Gasoline Sales

Market

Membership warehouse club retail (groceries, fresh foods, general merchandise, gasoline, ancillary services)

Geography

United States (primarily Eastern U.S.)

Customer

Households and small businesses (members)

Role

Retailer / warehouse club operator

Revenue share

97.8%

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

BJ's Wholesale Club Holdings, Inc.
West Pharmaceutical Services, Inc.
Ticker / Exchange
BJ - New York Stock Exchange
WST - New York Stock Exchange
Market cap (USD)
$12.3B
$20.1B
Gross margin (TTM)
18.6%
35.6%
Operating margin (TTM)
3.9%
20.9%
Net margin (TTM)
2.7%
16.3%
Sector
Consumer
Healthcare
Industry
Discount Stores
Medical - Instruments & Supplies
HQ country
US
US
Primary segment
Merchandise and Gasoline Sales
Proprietary Products
Market structure
Oligopoly
Quasi-Monopoly
Market share
n/a
70%-75% (reported)
HHI estimate
n/a
n/a
Pricing power
Weak
Moderate
Moat score
60 / 100
85 / 100
Moat domains
Supply, Financial, Demand
Demand, Legal, Supply
Last update
2026-01-06
2025-12-22

Moat coverage

Shared moat types

Brand Trust

BJ's Wholesale Club Holdings, Inc. strengths

Scale Economies Unit CostSupply Chain ControlPhysical Network DensityNegative Working CapitalFloat PrepaymentHabit Default

West Pharmaceutical Services, Inc. strengths

Design In QualificationCompliance AdvantageCapex Knowhow ScaleOperational Excellence

Segment mix

BJ's Wholesale Club Holdings, Inc. segments

Full profile >

Merchandise and Gasoline Sales

Oligopoly

97.8%

Membership Fee Income

Oligopoly

2.2%

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?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

View the moat stocks list

Looking for expansion-stage stocks?

Proven models entering the expansion stage with unit economics that work.

View expansion-stage stocks

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.