VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Amgen Inc. vs Martin Marietta Materials, Inc.

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

Amgen Inc.

AMGN · Nasdaq Stock Market

Market cap (USD)$176.5B
Gross margin (TTM)66.2%
Operating margin (TTM)24.1%
Net margin (TTM)19.5%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-22
Moat score
70/ 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 Amgen Inc.'s moat claims, evidence, and risks.

View AMGN analysis

Martin Marietta Materials, Inc.

MLM · NYSE

Market cap (USD)$37.9B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
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

Comparison highlights

  • Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 70 / 100 for Amgen Inc.).
  • Segment focus: Amgen Inc. has 3 segments (80.1% in Core Innovative Medicines); Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Amgen Inc. has 5 moat types across 3 domains; Martin Marietta Materials, Inc. has 4 across 2.

Primary market context

Amgen Inc.

Core Innovative Medicines

Market

Branded biopharmaceutical therapies for common diseases (bone health, inflammation, oncology, cardiovascular and other specialty areas)

Geography

Global

Customer

Payers, providers, and pharmacies

Role

Drug developer/manufacturer

Revenue share

80.1%

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%

Side-by-side metrics

Amgen Inc.
Martin Marietta Materials, Inc.
Ticker / Exchange
AMGN - Nasdaq Stock Market
MLM - NYSE
Market cap (USD)
$176.5B
$37.9B
Gross margin (TTM)
66.2%
n/a
Operating margin (TTM)
24.1%
n/a
Net margin (TTM)
19.5%
n/a
Sector
Healthcare
Materials
Industry
Drug Manufacturers - General
Construction Materials
HQ country
US
US
Primary segment
Core Innovative Medicines
East Group
Market structure
Competitive
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
70 / 100
78 / 100
Moat domains
Legal, Supply, Demand
Supply, Financial
Last update
2025-12-22
2026-01-01

Moat coverage

Shared moat types

Capex Knowhow Scale

Amgen Inc. strengths

IP Choke PointRegulated Standards PipeBrand TrustLearning Curve Yield

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalBenchmark Pricing Power

Segment mix

Amgen Inc. segments

Full profile >

Core Innovative Medicines

Competitive

80.1%

Rare Disease Portfolio (Horizon + others)

Quasi-Monopoly

13.3%

Biosimilars

Oligopoly

6.6%

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

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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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.