VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, January 7, 2026
Stock Comparison
AstraZeneca PLC vs Duolingo, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
AstraZeneca PLC
AZN · London Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into AstraZeneca PLC's moat claims, evidence, and risks.
View AZN analysisDuolingo, Inc.
DUOL · NASDAQ
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 analysisComparison highlights
- Moat score gap: AstraZeneca PLC leads (71 / 100 vs 68 / 100 for Duolingo, Inc.).
- Segment focus: AstraZeneca PLC has 6 segments (41% in Oncology); Duolingo, Inc. has 2 segments (93.9% in Duolingo App).
- Primary market structure: Oligopoly vs Competitive. Pricing power: Strong vs Moderate.
- Moat breadth: AstraZeneca PLC has 4 moat types across 3 domains; Duolingo, Inc. has 6 across 3.
Primary market context
AstraZeneca PLC
Oncology
Innovator oncology therapeutics (branded prescription medicines)
Global
Hospitals, oncology clinics, payers
Innovator biopharmaceutical company
41%
Duolingo, Inc.
Duolingo App
Mobile-first, freemium language learning and adjacent subjects (math, music)
Global
Consumers (end-users); advertisers
Digital learning platform / content & software publisher
93.9%
Side-by-side metrics
Moat coverage
Shared moat types
AstraZeneca PLC strengths
Duolingo, Inc. strengths
Segment mix
AstraZeneca PLC segments
Full profile >Oncology
Oligopoly
Cardiovascular, Renal and Metabolism (CVRM)
Competitive
Respiratory & Immunology (R&I)
Oligopoly
Vaccines & Immune Therapies (V&I)
Oligopoly
Rare Disease
Oligopoly
Other Medicines
Competitive
Duolingo, Inc. segments
Full profile >Duolingo App
Competitive
Duolingo English Test
Oligopoly
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View the moat stocks listLooking for expansion-stage stocks?
Proven models entering the expansion stage with unit economics that work.
View expansion-stage stocksCuration & 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.