VOL. XCIV, NO. 247

* WIDE MOAT STOCKS COMPARISON *

NO ADVICE

Sunday, December 28, 2025

Stock Comparison

Merck & Co., Inc. vs MSCI Inc.

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

Merck & Co., Inc.

MRK · New York Stock Exchange

Market cap (USD)$250.9B
SectorHealthcare
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.

View full moat analysis >

MSCI Inc.

MSCI · New York Stock Exchange

Market cap (USD)$43.7B
SectorFinancials
CountryUS
Data as of2025-12-28
Moat score
76/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

View full moat analysis >

Side-by-side metrics

Merck & Co., Inc.
MSCI Inc.
Ticker / Exchange
MRK - New York Stock Exchange
MSCI - New York Stock Exchange
Market cap (USD)
$250.9B
$43.7B
Sector
Healthcare
Financials
HQ country
US
US
Primary segment
Pharmaceutical
Index
Market structure
Competitive
Oligopoly
Market share
n/a
23%-27% (implied)
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
71 / 100
76 / 100
Moat domains
Legal, Supply, Demand
Network, Demand, Legal
Last update
2025-12-22
2025-12-28

Moat coverage

Shared moat types

Data Workflow Lockin

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleScope Economies

MSCI Inc. strengths

De Facto StandardSwitching Costs GeneralCompliance Advantage

Segment mix

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

MSCI Inc. segments

Full profile >

Index

Oligopoly

55.9%

Analytics

Oligopoly

23.6%

Sustainability and Climate

Competitive

11.4%

Private Assets

Competitive

9%

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 Pricing, features, and availability may be incomplete or out of date.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.