VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, January 7, 2026

Stock Comparison

Boston Scientific Corporation vs Walmart Inc.

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

Boston Scientific Corporation

BSX · New York Stock Exchange

Market cap (USD)$141.5B
Gross margin (TTM)65.1%
Operating margin (TTM)17.3%
Net margin (TTM)14.4%
SectorHealthcare
IndustryMedical - Devices
CountryUS
Data as of2026-01-04
Moat score
65/ 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 Boston Scientific Corporation's moat claims, evidence, and risks.

View BSX analysis

Walmart Inc.

WMT · New York Stock Exchange

Market cap (USD)$898.6B
Gross margin (TTM)24.9%
Operating margin (TTM)4.1%
Net margin (TTM)3.3%
SectorConsumer
IndustryDiscount Stores
CountryUS
Data as of2025-12-30
Moat score
77/ 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 Walmart Inc.'s moat claims, evidence, and risks.

View WMT analysis

Comparison highlights

  • Moat score gap: Walmart Inc. leads (77 / 100 vs 65 / 100 for Boston Scientific Corporation).
  • Segment focus: Boston Scientific Corporation has 5 segments (49.8% in Cardiology); Walmart Inc. has 3 segments (68.3% in Walmart U.S.).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Weak.
  • Moat breadth: Boston Scientific Corporation has 6 moat types across 3 domains; Walmart Inc. has 6 across 4.

Primary market context

Boston Scientific Corporation

Cardiology

Market

Cardiology devices (interventional cardiology, structural heart, electrophysiology, cardiac rhythm management and remote monitoring)

Geography

Global

Customer

Hospitals/cath labs/EP labs and specialty clinics (cardiologists, electrophysiologists)

Role

Medical device OEM / implantables + procedure devices + service-enabled monitoring

Revenue share

49.8%

Walmart Inc.

Walmart U.S.

Market

U.S. omnichannel discount retail and grocery (supercenters, neighborhood markets, eCommerce)

Geography

United States

Customer

Consumers and small businesses; marketplace sellers and advertisers (for marketplace and retail media offerings)

Role

Retailer / marketplace operator / last-mile fulfillment network

Revenue share

68.3%

Side-by-side metrics

Boston Scientific Corporation
Walmart Inc.
Ticker / Exchange
BSX - New York Stock Exchange
WMT - New York Stock Exchange
Market cap (USD)
$141.5B
$898.6B
Gross margin (TTM)
65.1%
24.9%
Operating margin (TTM)
17.3%
4.1%
Net margin (TTM)
14.4%
3.3%
Sector
Healthcare
Consumer
Industry
Medical - Devices
Discount Stores
HQ country
US
US
Primary segment
Cardiology
Walmart U.S.
Market structure
Oligopoly
Competitive
Market share
n/a
20%-22% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Weak
Moat score
65 / 100
77 / 100
Moat domains
Demand, Legal, Supply
Supply, Demand, Network, Financial
Last update
2026-01-04
2025-12-30

Moat coverage

Shared moat types

No overlap yet.

Boston Scientific Corporation strengths

Installed Base ConsumablesProcurement InertiaTraining Org Change CostsRegulated Standards PipeReputation ReviewsDistribution Control

Walmart Inc. strengths

Scale Economies Unit CostPhysical Network DensityHabit DefaultSupply Chain ControlEcosystem ComplementsFloat Prepayment

Segment mix

Boston Scientific Corporation segments

Full profile >

Endoscopy

Oligopoly

16%

Urology

Competitive

13.1%

Neuromodulation

Oligopoly

6.6%

Cardiology

Oligopoly

49.8%

Peripheral Interventions

Competitive

14.4%

Walmart Inc. segments

Full profile >

Walmart U.S.

Competitive

68.3%

Walmart International

Competitive

18.1%

Sam's Club U.S.

Oligopoly

13.6%

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.