VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, January 7, 2026

Stock Comparison

Duolingo, Inc. vs RELX PLC

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

Duolingo, Inc.

DUOL · NASDAQ

Market cap (USD)$8.6B
Gross margin (TTM)72%
Operating margin (TTM)11%
Net margin (TTM)40%
SectorTechnology
IndustrySoftware - Application
CountryUS
Data as of2026-01-06
Moat score
68/ 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 Duolingo, Inc.'s moat claims, evidence, and risks.

View DUOL analysis

RELX PLC

REL · London Stock Exchange

Market cap (USD)$55.8B
Gross margin (TTM)64%
Operating margin (TTM)30.7%
Net margin (TTM)20.3%
SectorIndustrials
IndustryPublishing
CountryGB
Data as of2025-12-30
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 RELX PLC's moat claims, evidence, and risks.

View REL analysis

Comparison highlights

  • Moat score gap: RELX PLC leads (78 / 100 vs 68 / 100 for Duolingo, Inc.).
  • Segment focus: Duolingo, Inc. has 2 segments (93.9% in Duolingo App); RELX PLC has 4 segments (34.4% in Risk).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Duolingo, Inc. has 6 moat types across 3 domains; RELX PLC has 8 across 3.

Primary market context

Duolingo, Inc.

Duolingo App

Market

Mobile-first, freemium language learning and adjacent subjects (math, music)

Geography

Global

Customer

Consumers (end-users); advertisers

Role

Digital learning platform / content & software publisher

Revenue share

93.9%

RELX PLC

Risk

Market

Risk analytics & decisioning platforms (fraud/identity, financial crime compliance, insurance underwriting/claims, industry data)

Geography

Global (largest in North America)

Customer

Enterprises (banks, insurers, digital commerce), governments, and other regulated industries

Role

Data/analytics provider and workflow platform

Revenue share

34.4%

Side-by-side metrics

Duolingo, Inc.
RELX PLC
Ticker / Exchange
DUOL - NASDAQ
REL - London Stock Exchange
Market cap (USD)
$8.6B
$55.8B
Gross margin (TTM)
72%
64%
Operating margin (TTM)
11%
30.7%
Net margin (TTM)
40%
20.3%
Sector
Technology
Industrials
Industry
Software - Application
Publishing
HQ country
US
GB
Primary segment
Duolingo App
Risk
Market structure
Competitive
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
68 / 100
78 / 100
Moat domains
Network, Demand, Supply
Network, Demand, Legal
Last update
2026-01-06
2025-12-30

Moat coverage

Shared moat types

Data Network EffectsBrand Trust

Duolingo, Inc. strengths

Habit DefaultScope EconomiesDesign In QualificationOperational Excellence

RELX PLC strengths

Data Workflow LockinCompliance AdvantageContent Rights CurrencySuite BundlingTwo Sided NetworkReputation Reviews

Segment mix

Duolingo, Inc. segments

Full profile >

Duolingo App

Competitive

93.9%

Duolingo English Test

Oligopoly

6.1%

RELX PLC segments

Full profile >

Risk

Oligopoly

34.4%

Scientific, Technical & Medical

Oligopoly

32.3%

Legal

Oligopoly

20.1%

Exhibitions

Competitive

13.1%

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.