VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

Martin Marietta Materials, Inc. vs Sea Limited

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

Martin Marietta Materials, Inc.

MLM · NYSE

Market cap (USD)$38.7B
Gross margin (TTM)29.9%
Operating margin (TTM)23.4%
Net margin (TTM)17.4%
SectorMaterials
IndustryConstruction Materials
CountryUS
Data as of2026-01-01
Moat score
78/ 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 Martin Marietta Materials, Inc.'s moat claims, evidence, and risks.

View MLM 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: Martin Marietta Materials, Inc. leads (78 / 100 vs 69 / 100 for Sea Limited).
  • Segment focus: Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group); Sea Limited has 3 segments (73.8% in Shopee (E-commerce)).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
  • Moat breadth: Martin Marietta Materials, Inc. has 4 moat types across 2 domains; Sea Limited has 6 across 3.

Primary market context

Martin Marietta Materials, Inc.

East Group

Market

Construction aggregates and asphalt products (crushed stone, sand & gravel; asphalt) in local/regional markets

Geography

United States (East/Southeast and adjacent regions)

Customer

Infrastructure agencies, construction contractors, and downstream materials producers (asphalt/ready-mix)

Role

Quarry/mining operator and building materials producer/distributor

Revenue share

52.4%

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

Martin Marietta Materials, Inc.
Sea Limited
Ticker / Exchange
MLM - NYSE
SE - New York Stock Exchange
Market cap (USD)
$38.7B
$82.8B
Gross margin (TTM)
29.9%
44.9%
Operating margin (TTM)
23.4%
8.2%
Net margin (TTM)
17.4%
6.8%
Sector
Materials
Consumer
Industry
Construction Materials
Specialty Retail
HQ country
US
SG
Primary segment
East Group
Shopee (E-commerce)
Market structure
Oligopoly
Oligopoly
Market share
n/a
52% (reported)
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
78 / 100
69 / 100
Moat domains
Supply, Financial
Network, Supply, Legal
Last update
2026-01-01
2026-01-06

Moat coverage

Shared moat types

No overlap yet.

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalBenchmark Pricing PowerCapex Knowhow Scale

Sea Limited strengths

Two Sided NetworkDistribution ControlEcosystem ComplementsRegulated Standards PipeDirect Network EffectsContractual Exclusivity

Segment mix

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

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.