VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, January 7, 2026
Stock Comparison
Duolingo, Inc. vs Spirax Group plc
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
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 analysisSpirax Group plc
SPX · 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 Spirax Group plc's moat claims, evidence, and risks.
View SPX analysisComparison highlights
- Moat score gap: Spirax Group plc leads (71 / 100 vs 68 / 100 for Duolingo, Inc.).
- Segment focus: Duolingo, Inc. has 2 segments (93.9% in Duolingo App); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
- Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Moderate.
- Moat breadth: Duolingo, Inc. has 6 moat types across 3 domains; Spirax Group plc has 6 across 2.
Primary market context
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%
Spirax Group plc
Steam Thermal Solutions
Industrial and commercial steam systems (condensate management, controls, thermal energy management products and solutions)
Global
Industrial process operators and commercial facility operators
OEM / solutions provider
52.1%
Side-by-side metrics
Moat coverage
Shared moat types
Duolingo, Inc. strengths
Spirax Group plc strengths
Segment mix
Duolingo, Inc. segments
Full profile >Duolingo App
Competitive
Duolingo English Test
Oligopoly
Spirax Group plc segments
Full profile >Steam Thermal Solutions
Oligopoly
Electric Thermal Solutions
Competitive
Watson-Marlow Fluid Technology Solutions
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.