VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Boston Scientific Corporation vs Fiserv, 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)$144.7B
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

Fiserv, Inc.

FISV · NASDAQ

Market cap (USD)$37.7B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorFinancials
Industry
CountryUS
Data as of2026-01-10
Moat score
67/ 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 Fiserv, Inc.'s moat claims, evidence, and risks.

View FISV analysis

Comparison highlights

  • Moat score gap: Fiserv, Inc. leads (67 / 100 vs 65 / 100 for Boston Scientific Corporation).
  • Segment focus: Boston Scientific Corporation has 5 segments (49.8% in Cardiology); Fiserv, Inc. has 2 segments (50.4% in Merchant).
  • Moat breadth: Boston Scientific Corporation has 6 moat types across 3 domains; Fiserv, Inc. has 6 across 3.

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%

Fiserv, Inc.

Merchant

Market

Merchant acquiring and commerce enablement (SMB + enterprise omnichannel payments, POS, gateway/orchestration, and related software)

Geography

Global

Customer

Merchants (SMB and enterprise), plus channel partners (ISVs/ISOs/financial institutions) that serve or refer merchants

Role

Merchant acquirer / payment processor / commerce and POS platform provider

Revenue share

50.4%

Side-by-side metrics

Boston Scientific Corporation
Fiserv, Inc.
Ticker / Exchange
BSX - New York Stock Exchange
FISV - NASDAQ
Market cap (USD)
$144.7B
$37.7B
Gross margin (TTM)
65.1%
n/a
Operating margin (TTM)
17.3%
n/a
Net margin (TTM)
14.4%
n/a
Sector
Healthcare
Financials
Industry
Medical - Devices
n/a
HQ country
US
US
Primary segment
Cardiology
Merchant
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
65 / 100
67 / 100
Moat domains
Demand, Legal, Supply
Network, Supply, Demand
Last update
2026-01-04
2026-01-10

Moat coverage

Shared moat types

Training Org Change CostsDistribution Control

Boston Scientific Corporation strengths

Installed Base ConsumablesProcurement InertiaRegulated Standards PipeReputation Reviews

Fiserv, Inc. strengths

Ecosystem ComplementsScale Economies Unit CostTwo Sided NetworkSuite 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%

Fiserv, Inc. segments

Full profile >

Merchant

Oligopoly

50.4%

Financial

Oligopoly

49.6%

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.