VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Fidelity National Information Services, Inc. vs Merck & Co., Inc.

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

Fidelity National Information Services, Inc.

FIS · New York Stock Exchange

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorTechnology
Industry
CountryUS
Data as of2026-01-10
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 Fidelity National Information Services, Inc.'s moat claims, evidence, and risks.

View FIS analysis

Merck & Co., Inc.

MRK · New York Stock Exchange

Market cap (USD)$277.7B
Gross margin (TTM)78.3%
Operating margin (TTM)36.4%
Net margin (TTM)29.6%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-22
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 Merck & Co., Inc.'s moat claims, evidence, and risks.

View MRK analysis

Comparison highlights

  • Moat score gap: Merck & Co., Inc. leads (71 / 100 vs 65 / 100 for Fidelity National Information Services, Inc.).
  • Segment focus: Fidelity National Information Services, Inc. has 2 segments (68.1% in Banking Solutions); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Fidelity National Information Services, Inc. has 6 moat types across 3 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

Fidelity National Information Services, Inc.

Banking Solutions

Market

Core banking platforms and bank transaction processing software/services

Geography

Global

Customer

Banks, credit unions, commercial lenders, and other institutions

Role

Software/platform provider and outsourced processor

Revenue share

68.1%

Merck & Co., Inc.

Pharmaceutical

Market

Branded prescription pharmaceuticals & human vaccines

Geography

Global

Customer

Wholesalers/retailers, managed care and government payers, hospitals/clinics

Role

R&D-intensive innovator, manufacturer, and marketer

Revenue share

89.5%

Side-by-side metrics

Fidelity National Information Services, Inc.
Merck & Co., Inc.
Ticker / Exchange
FIS - New York Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
n/a
$277.7B
Gross margin (TTM)
n/a
78.3%
Operating margin (TTM)
n/a
36.4%
Net margin (TTM)
n/a
29.6%
Sector
Technology
Healthcare
Industry
n/a
Drug Manufacturers - General
HQ country
US
US
Primary segment
Banking Solutions
Pharmaceutical
Market structure
Oligopoly
Competitive
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, Network
Legal, Supply, Demand
Last update
2026-01-10
2025-12-22

Moat coverage

Shared moat types

Data Workflow Lockin

Fidelity National Information Services, Inc. strengths

Long Term ContractsSwitching Costs GeneralCompliance AdvantageSuite BundlingEcosystem Complements

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleScope Economies

Segment mix

Fidelity National Information Services, Inc. segments

Full profile >

Banking Solutions

Oligopoly

68.1%

Capital Market Solutions

Competitive

29.4%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

Want the full wide moat stocks list?

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

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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.