VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

VINCI SA vs Gilead Sciences, Inc.

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

VINCI SA

DG · Euronext Paris

Market cap (USD)$67.5B
Gross margin (TTM)16%
Operating margin (TTM)12.1%
Net margin (TTM)6.5%
SectorIndustrials
IndustryEngineering & Construction
CountryFR
Data as of2026-01-03
Moat score
57/ 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 VINCI SA's moat claims, evidence, and risks.

View DG analysis

Gilead Sciences, Inc.

GILD · NASDAQ Global Select Market

Market cap (USD)$146.8B
Gross margin (TTM)78.7%
Operating margin (TTM)36.1%
Net margin (TTM)27.9%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-30
Moat score
74/ 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 Gilead Sciences, Inc.'s moat claims, evidence, and risks.

View GILD analysis

Comparison highlights

  • Moat score gap: Gilead Sciences, Inc. leads (74 / 100 vs 57 / 100 for VINCI SA).
  • Segment focus: VINCI SA has 7 segments (44.4% in VINCI Construction); Gilead Sciences, Inc. has 5 segments (68.5% in HIV).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Weak vs Moderate.
  • Moat breadth: VINCI SA has 7 moat types across 2 domains; Gilead Sciences, Inc. has 8 across 3.

Primary market context

VINCI SA

VINCI Construction

Market

Construction and civil engineering contracting (buildings, infrastructure and specialty networks)

Geography

Global

Customer

Public-sector project owners and private developers/industrial clients

Role

General contractor / civil engineering contractor

Revenue share

44.4%

Gilead Sciences, Inc.

HIV

Market

HIV treatment and prevention medicines (antiretroviral therapy and PrEP)

Geography

Global (U.S. and Europe are major markets)

Customer

Patients/prescribers; reimbursed by public and private payers; distributed via wholesalers and specialty pharmacies

Role

Drug developer and marketing authorization holder

Revenue share

68.5%

Side-by-side metrics

VINCI SA
Gilead Sciences, Inc.
Ticker / Exchange
DG - Euronext Paris
GILD - NASDAQ Global Select Market
Market cap (USD)
$67.5B
$146.8B
Gross margin (TTM)
16%
78.7%
Operating margin (TTM)
12.1%
36.1%
Net margin (TTM)
6.5%
27.9%
Sector
Industrials
Healthcare
Industry
Engineering & Construction
Drug Manufacturers - General
HQ country
FR
US
Primary segment
VINCI Construction
HIV
Market structure
Competitive
Oligopoly
Market share
n/a
50%-60% (reported)
HHI estimate
n/a
n/a
Pricing power
Weak
Moderate
Moat score
57 / 100
74 / 100
Moat domains
Legal, Supply
Demand, Legal, Supply
Last update
2026-01-03
2025-12-30

Moat coverage

Shared moat types

Service Field NetworkCapex Knowhow ScaleCompliance Advantage

VINCI SA strengths

Concession LicensePermits Rights Of WayOperational ExcellenceCapacity Moat

Gilead Sciences, Inc. strengths

Habit DefaultSwitching Costs GeneralIP Choke PointRegulated Standards PipeBrand Trust

Segment mix

VINCI SA segments

Full profile >

VINCI Autoroutes

Monopoly

9.2%

VINCI Airports

Oligopoly

6.3%

Other concessions (incl. VINCI Highways and PPP assets)

Competitive

0.8%

VINCI Energies

Competitive

28.4%

Cobra IS

Competitive

9.9%

VINCI Construction

Competitive

44.4%

VINCI Immobilier

Competitive

1.6%

Gilead Sciences, Inc. segments

Full profile >

HIV

Oligopoly

68.5%

Oncology (Cell Therapy + Trodelvy)

Oligopoly

11.5%

Liver Disease

Oligopoly

10.6%

Veklury (Remdesivir)

Competitive

6.3%

Other Products

Competitive

3.1%

Want the full wide moat stocks list?

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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.