VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 9, 2026

Stock Comparison

Boston Scientific Corporation vs Spirax Group plc

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

Spirax Group plc

SPX · London Stock Exchange

Market cap (USD)$5B
Gross margin (TTM)19.6%
Operating margin (TTM)17.2%
Net margin (TTM)10.7%
SectorIndustrials
IndustryIndustrial - Machinery
CountryGB
Data as of2025-12-28
Moat score
71/ 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 Spirax Group plc's moat claims, evidence, and risks.

View SPX analysis

Comparison highlights

  • Moat score gap: Spirax Group plc leads (71 / 100 vs 65 / 100 for Boston Scientific Corporation).
  • Segment focus: Boston Scientific Corporation has 5 segments (49.8% in Cardiology); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
  • Moat breadth: Boston Scientific Corporation has 6 moat types across 3 domains; Spirax Group plc has 6 across 2.

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%

Spirax Group plc

Steam Thermal Solutions

Market

Industrial and commercial steam systems (condensate management, controls, thermal energy management products and solutions)

Geography

Global

Customer

Industrial process operators and commercial facility operators

Role

OEM / solutions provider

Revenue share

52.1%

Side-by-side metrics

Boston Scientific Corporation
Spirax Group plc
Ticker / Exchange
BSX - New York Stock Exchange
SPX - London Stock Exchange
Market cap (USD)
$141.5B
$5B
Gross margin (TTM)
65.1%
19.6%
Operating margin (TTM)
17.3%
17.2%
Net margin (TTM)
14.4%
10.7%
Sector
Healthcare
Industrials
Industry
Medical - Devices
Industrial - Machinery
HQ country
US
GB
Primary segment
Cardiology
Steam Thermal Solutions
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
65 / 100
71 / 100
Moat domains
Demand, Legal, Supply
Supply, Demand
Last update
2026-01-04
2025-12-28

Moat coverage

Shared moat types

Installed Base Consumables

Boston Scientific Corporation strengths

Procurement InertiaTraining Org Change CostsRegulated Standards PipeReputation ReviewsDistribution Control

Spirax Group plc strengths

Service Field NetworkBrand TrustCapex Knowhow ScaleDesign In QualificationSuite Bundling

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%

Spirax Group plc segments

Full profile >

Steam Thermal Solutions

Oligopoly

52.1%

Electric Thermal Solutions

Competitive

24.3%

Watson-Marlow Fluid Technology Solutions

Oligopoly

23.6%

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.