VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Tuesday, December 30, 2025
Stock Comparison
Alphabet Inc. vs Pfizer Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Alphabet Inc.
GOOGL · The Nasdaq Stock Market
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Alphabet Inc.'s moat claims, evidence, and risks.
View GOOGL analysisPfizer Inc.
PFE · New York Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Comparison highlights
- Moat score gap: Alphabet Inc. leads (86 / 100 vs 58 / 100 for Pfizer Inc.).
- Segment focus: Alphabet Inc. has 6 segments (56.6% in Google Search & other (Advertising)); Pfizer Inc. has 5 segments (47.4% in Primary Care).
- Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Strong vs Moderate.
- Moat breadth: Alphabet Inc. has 10 moat types across 4 domains; Pfizer Inc. has 8 across 3.
Primary market context
Alphabet Inc.
Google Search & other (Advertising)
Search advertising (intent-based digital ads)
Global
Advertisers (SMB to enterprise)
Ad platform / publisher
56.6%
Pfizer Inc.
Primary Care
Branded primary care medicines and vaccines (incl. cardiovascular, migraine, pneumococcal/RSV/COVID-19)
Global
Healthcare providers, payers/PBMs, pharmacies/wholesalers, and government procurement
Innovator biopharma (R&D + manufacturing + commercialization)
47.4%
Side-by-side metrics
Moat coverage
Shared moat types
Alphabet Inc. strengths
Pfizer Inc. strengths
Segment mix
Alphabet Inc. segments
Full profile >Google Search & other (Advertising)
Quasi-Monopoly
YouTube (Advertising)
Oligopoly
Google Network (Advertising)
Competitive
Google Subscriptions, Platforms & Devices
Quasi-Monopoly
Google Cloud
Oligopoly
Other Bets
Competitive
Pfizer Inc. segments
Full profile >Primary Care
Oligopoly
Specialty Care
Oligopoly
Oncology
Competitive
Pfizer CentreOne
Competitive
Pfizer Ignite
Competitive
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View the moat stocks listCuration & 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.