VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Auto Trader Group plc vs UnitedHealth Group Incorporated

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

Auto Trader Group plc

AUTO · London Stock Exchange

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorCommunication Services
Industry
CountryGB
Data as of2026-01-10
Moat score
96/ 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 Auto Trader Group plc's moat claims, evidence, and risks.

View AUTO analysis

UnitedHealth Group Incorporated

UNH · New York Stock Exchange

Market cap (USD)$311.6B
Gross margin (TTM)19.7%
Operating margin (TTM)6.1%
Net margin (TTM)4%
SectorHealthcare
IndustryMedical - Healthcare Plans
CountryUS
Data as of2025-12-31
Moat score
64/ 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 UnitedHealth Group Incorporated's moat claims, evidence, and risks.

View UNH analysis

Comparison highlights

  • Moat score gap: Auto Trader Group plc leads (96 / 100 vs 64 / 100 for UnitedHealth Group Incorporated).
  • Segment focus: Auto Trader Group plc has 2 segments (93.3% in Autotrader (UK automotive marketplace & data platform)); UnitedHealth Group Incorporated has 4 segments (74.9% in UnitedHealthcare).
  • Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Strong vs Weak.
  • Moat breadth: Auto Trader Group plc has 4 moat types across 2 domains; UnitedHealth Group Incorporated has 5 across 2.

Primary market context

Auto Trader Group plc

Autotrader (UK automotive marketplace & data platform)

Market

UK digital automotive marketplace (new & used) with retailer advertising/data products

Geography

United Kingdom

Customer

Consumers, vehicle retailers, OEMs/advertising agencies

Role

Two-sided marketplace + advertising/data & workflow tools

Revenue share

93.3%

UnitedHealth Group Incorporated

UnitedHealthcare

Market

U.S. health benefits / managed care (commercial, Medicare Advantage, Medicaid managed care)

Geography

United States (primarily)

Customer

Employers, individuals, and government-sponsored programs

Role

Health insurer / managed care organization

Revenue share

74.9%

Side-by-side metrics

Auto Trader Group plc
UnitedHealth Group Incorporated
Ticker / Exchange
AUTO - London Stock Exchange
UNH - New York Stock Exchange
Market cap (USD)
n/a
$311.6B
Gross margin (TTM)
n/a
19.7%
Operating margin (TTM)
n/a
6.1%
Net margin (TTM)
n/a
4%
Sector
Communication Services
Healthcare
Industry
n/a
Medical - Healthcare Plans
HQ country
GB
US
Primary segment
Autotrader (UK automotive marketplace & data platform)
UnitedHealthcare
Market structure
Quasi-Monopoly
Oligopoly
Market share
75%-80% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Weak
Moat score
96 / 100
64 / 100
Moat domains
Network, Demand
Supply, Demand
Last update
2026-01-10
2025-12-31

Moat coverage

Shared moat types

Data Workflow Lockin

Auto Trader Group plc strengths

Two Sided NetworkHabit DefaultEcosystem Complements

UnitedHealth Group Incorporated strengths

Scale Economies Unit CostSuite BundlingOperational ExcellenceTraining Org Change Costs

Segment mix

Auto Trader Group plc segments

Full profile >

Autotrader (UK automotive marketplace & data platform)

Quasi-Monopoly

93.3%

Autorama (vehicle leasing marketplace)

Competitive

6.7%

UnitedHealth Group Incorporated segments

Full profile >

UnitedHealthcare

Oligopoly

74.9%

Optum Health

Competitive

9.9%

Optum Insight

Competitive

1.7%

Optum Rx

Oligopoly

13.5%

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.