VOL. XCIV, NO. 247

* MOAT STOCKS COMPARISON *

NO ADVICE

Friday, December 26, 2025

Stock Comparison

Meta Platforms, Inc. vs Merck & Co., Inc.

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

Meta Platforms, Inc.

META · Nasdaq Global Select Market

Market cap (USD)$1.8T
SectorCommunication Services
CountryUS
Data as of2025-12-26
Moat score
94/ 100

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

View full moat analysis >

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 >

Side-by-side metrics

Meta Platforms, Inc.
Merck & Co., Inc.
Ticker / Exchange
META - Nasdaq Global Select Market
MRK - New York Stock Exchange
Market cap (USD)
$1.8T
$250.9B
Sector
Communication Services
Healthcare
HQ country
US
US
Primary segment
Family of Apps (FoA)
Pharmaceutical
Market structure
Oligopoly
Competitive
Market share
55%-65% (estimated)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
94 / 100
71 / 100
Moat domains
Network, Supply
Legal, Supply, Demand
Last update
2025-12-26
2025-12-22

Moat coverage

Shared moat types

Capex Knowhow Scale

Meta Platforms, Inc. strengths

Two Sided NetworkDirect Network EffectsData Network EffectsEcosystem ComplementsLearning Curve Yield

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeScope EconomiesData Workflow Lockin

Segment mix

Meta Platforms, Inc. segments

Full profile >

Family of Apps (FoA)

Oligopoly

98.7%

Reality Labs (RL)

Quasi-Monopoly

1.3%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

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 Pricing, features, and availability may be incomplete or out of date.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