VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Auto Trader Group plc vs Sartorius Stedim Biotech S.A.

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

Sartorius Stedim Biotech S.A.

DIM · Euronext Paris

Market cap (USD)$20.8B
Gross margin (TTM)45.6%
Operating margin (TTM)17.6%
Net margin (TTM)9%
SectorHealthcare
IndustryMedical - Instruments & Supplies
CountryFR
Data as of2025-12-28
Moat score
80/ 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 Sartorius Stedim Biotech S.A.'s moat claims, evidence, and risks.

View DIM analysis

Comparison highlights

  • Moat score gap: Auto Trader Group plc leads (96 / 100 vs 80 / 100 for Sartorius Stedim Biotech S.A.).
  • Segment focus: Auto Trader Group plc has 2 segments (93.3% in Autotrader (UK automotive marketplace & data platform)); Sartorius Stedim Biotech S.A. has 2 segments (75% in Sterile single-use bioprocessing consumables).
  • Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Strong vs Strong.
  • Moat breadth: Auto Trader Group plc has 4 moat types across 2 domains; Sartorius Stedim Biotech S.A. has 6 across 3.

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%

Sartorius Stedim Biotech S.A.

Sterile single-use bioprocessing consumables

Market

Sterile single-use bioprocessing consumables (bags, filters, fluid management components)

Geography

Global

Customer

Biopharmaceutical manufacturers and CDMOs

Role

Consumables supplier (single-use)

Revenue share

75%

Side-by-side metrics

Auto Trader Group plc
Sartorius Stedim Biotech S.A.
Ticker / Exchange
AUTO - London Stock Exchange
DIM - Euronext Paris
Market cap (USD)
n/a
$20.8B
Gross margin (TTM)
n/a
45.6%
Operating margin (TTM)
n/a
17.6%
Net margin (TTM)
n/a
9%
Sector
Communication Services
Healthcare
Industry
n/a
Medical - Instruments & Supplies
HQ country
GB
FR
Primary segment
Autotrader (UK automotive marketplace & data platform)
Sterile single-use bioprocessing consumables
Market structure
Quasi-Monopoly
Oligopoly
Market share
75%-80% (reported)
10%-25% (implied)
HHI estimate
n/a
n/a
Pricing power
Strong
Strong
Moat score
96 / 100
80 / 100
Moat domains
Network, Demand
Demand, Supply, Legal
Last update
2026-01-10
2025-12-28

Moat coverage

Shared moat types

No overlap yet.

Auto Trader Group plc strengths

Two Sided NetworkData Workflow LockinHabit DefaultEcosystem Complements

Sartorius Stedim Biotech S.A. strengths

Installed Base ConsumablesDesign In QualificationLearning Curve YieldCompliance AdvantageSuite BundlingCapex Knowhow Scale

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%

Sartorius Stedim Biotech S.A. segments

Full profile >

Sterile single-use bioprocessing consumables

Oligopoly

75%

Bioprocessing equipment, systems, and software/services

Oligopoly

25%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

View the moat stocks list

Looking for expansion-stage stocks?

Proven models entering the expansion stage with unit economics that work.

View expansion-stage stocks

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.