VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

Pfizer Inc. vs Sea Limited

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

Pfizer Inc.

PFE · New York Stock Exchange

Market cap (USD)$143.1B
Gross margin (TTM)71.2%
Operating margin (TTM)27.8%
Net margin (TTM)15.6%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-29
Moat score
58/ 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 Pfizer Inc.'s moat claims, evidence, and risks.

View PFE analysis

Sea Limited

SE · New York Stock Exchange

Market cap (USD)$82.8B
Gross margin (TTM)44.9%
Operating margin (TTM)8.2%
Net margin (TTM)6.8%
SectorConsumer
IndustrySpecialty Retail
CountrySG
Data as of2026-01-06
Moat score
69/ 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 Sea Limited's moat claims, evidence, and risks.

View SE analysis

Comparison highlights

  • Moat score gap: Sea Limited leads (69 / 100 vs 58 / 100 for Pfizer Inc.).
  • Segment focus: Pfizer Inc. has 5 segments (47.4% in Primary Care); Sea Limited has 3 segments (73.8% in Shopee (E-commerce)).
  • Moat breadth: Pfizer Inc. has 8 moat types across 3 domains; Sea Limited has 6 across 3.

Primary market context

Pfizer Inc.

Primary Care

Market

Branded primary care medicines and vaccines (incl. cardiovascular, migraine, pneumococcal/RSV/COVID-19)

Geography

Global

Customer

Healthcare providers, payers/PBMs, pharmacies/wholesalers, and government procurement

Role

Innovator biopharma (R&D + manufacturing + commercialization)

Revenue share

47.4%

Sea Limited

Shopee (E-commerce)

Market

E-commerce marketplace and related value-added services

Geography

Southeast Asia, Taiwan, Brazil

Customer

Consumers and sellers

Role

Marketplace operator

Revenue share

73.8%

Side-by-side metrics

Pfizer Inc.
Sea Limited
Ticker / Exchange
PFE - New York Stock Exchange
SE - New York Stock Exchange
Market cap (USD)
$143.1B
$82.8B
Gross margin (TTM)
71.2%
44.9%
Operating margin (TTM)
27.8%
8.2%
Net margin (TTM)
15.6%
6.8%
Sector
Healthcare
Consumer
Industry
Drug Manufacturers - General
Specialty Retail
HQ country
US
SG
Primary segment
Primary Care
Shopee (E-commerce)
Market structure
Oligopoly
Oligopoly
Market share
n/a
52% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
58 / 100
69 / 100
Moat domains
Legal, Demand, Supply
Network, Supply, Legal
Last update
2025-12-29
2026-01-06

Moat coverage

Shared moat types

No overlap yet.

Pfizer Inc. strengths

IP Choke PointProcurement InertiaGovernment Contracting RelationshipsCapex Knowhow ScaleCompliance AdvantageLong Term ContractsOperational ExcellenceEmbedded R&D partnership platform

Sea Limited strengths

Two Sided NetworkDistribution ControlEcosystem ComplementsRegulated Standards PipeDirect Network EffectsContractual Exclusivity

Segment mix

Pfizer Inc. segments

Full profile >

Primary Care

Oligopoly

47.4%

Specialty Care

Oligopoly

26.2%

Oncology

Competitive

24.5%

Pfizer CentreOne

Competitive

1.8%

Pfizer Ignite

Competitive

0.1%

Sea Limited segments

Full profile >

Shopee (E-commerce)

Oligopoly

73.8%

SeaMoney (Digital Financial Services)

Competitive

14.1%

Garena (Digital Entertainment)

Competitive

11.4%

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.

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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.