VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Thursday, January 8, 2026
Stock Comparison
CSL Limited vs Duolingo, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
CSL Limited
CSL · ASX
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Duolingo, 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: CSL Limited leads (77 / 100 vs 68 / 100 for Duolingo, Inc.).
- Segment focus: CSL Limited has 3 segments (71.7% in CSL Behring); Duolingo, Inc. has 2 segments (93.9% in Duolingo App).
- Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
- Moat breadth: CSL Limited has 7 moat types across 3 domains; Duolingo, Inc. has 6 across 3.
Primary market context
CSL Limited
CSL Behring
Plasma-derived therapies (immunoglobulins, albumin, coagulation factors) plus recombinant and gene therapies for rare and serious diseases
Global
Hospitals, specialty pharmacies, physicians; payers and national health systems
Vertically integrated biopharma (plasma collection -> fractionation/manufacturing -> commercial distribution)
71.7%
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
CSL Limited strengths
Duolingo, Inc. strengths
Segment mix
CSL Limited segments
Full profile >CSL Behring
Oligopoly
CSL Seqirus
Oligopoly
CSL Vifor
Oligopoly
Duolingo, Inc. segments
Full profile >Duolingo App
Competitive
Duolingo English Test
Oligopoly
Want the full wide moat stocks list?
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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.