VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

GSK plc vs Vulcan Materials Company

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

GSK plc

GSK · London Stock Exchange

Market cap (USD)$73.6B
Gross margin (TTM)72.4%
Operating margin (TTM)23.5%
Net margin (TTM)17.1%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryGB
Data as of2025-12-28
Moat score
62/ 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 GSK plc's moat claims, evidence, and risks.

View GSK analysis

Vulcan Materials Company

VMC · New York Stock Exchange

Market cap (USD)$38.3B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorMaterials
IndustryConstruction Materials
CountryUS
Data as of2026-01-01
Moat score
73/ 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 Vulcan Materials Company's moat claims, evidence, and risks.

View VMC analysis

Comparison highlights

  • Moat score gap: Vulcan Materials Company leads (73 / 100 vs 62 / 100 for GSK plc).
  • Segment focus: GSK plc has 3 segments (37.6% in Specialty Medicines); Vulcan Materials Company has 3 segments (74.4% in Aggregates).
  • Moat breadth: GSK plc has 4 moat types across 3 domains; Vulcan Materials Company has 5 across 2.

Primary market context

GSK plc

Specialty Medicines

Market

Branded specialty pharmaceuticals (HIV, oncology, immunology/respiratory)

Geography

Global

Customer

Hospitals, specialist physicians, payers

Role

Innovator & branded manufacturer

Revenue share

37.6%

Vulcan Materials Company

Aggregates

Market

Construction aggregates (crushed stone, sand & gravel)

Geography

United States (local/regional markets)

Customer

Construction contractors and public infrastructure agencies

Role

Upstream raw materials producer

Revenue share

74.4%

Side-by-side metrics

GSK plc
Vulcan Materials Company
Ticker / Exchange
GSK - London Stock Exchange
VMC - New York Stock Exchange
Market cap (USD)
$73.6B
$38.3B
Gross margin (TTM)
72.4%
n/a
Operating margin (TTM)
23.5%
n/a
Net margin (TTM)
17.1%
n/a
Sector
Healthcare
Materials
Industry
Drug Manufacturers - General
Construction Materials
HQ country
GB
US
Primary segment
Specialty Medicines
Aggregates
Market structure
Oligopoly
Oligopoly
Market share
n/a
8%-11% (implied)
HHI estimate
n/a
n/a
Pricing power
Strong
Strong
Moat score
62 / 100
73 / 100
Moat domains
Supply, Legal, Demand
Legal, Supply
Last update
2025-12-28
2026-01-01

Moat coverage

Shared moat types

No overlap yet.

GSK plc strengths

Capex Knowhow ScaleCompliance AdvantageIP Choke PointSwitching Costs General

Vulcan Materials Company strengths

Permits Rights Of WayGeographic NaturalPhysical Network DensityScale Economies Unit CostSupply Chain Control

Segment mix

GSK plc segments

Full profile >

Vaccines

Oligopoly

29.1%

Specialty Medicines

Oligopoly

37.6%

General Medicines

Competitive

33.2%

Vulcan Materials Company segments

Full profile >

Aggregates

Oligopoly

74.4%

Asphalt

Competitive

16.8%

Concrete

Competitive

8.8%

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.