VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
BlackRock, Inc. vs Costco Wholesale Corporation
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
BlackRock, Inc.
BLK · New York 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 BlackRock, Inc.'s moat claims, evidence, and risks.
View BLK analysisCostco Wholesale Corporation
COST · Nasdaq Global Select 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 Costco Wholesale Corporation's moat claims, evidence, and risks.
View COST analysisComparison highlights
- Moat score gap: Costco Wholesale Corporation leads (80 / 100 vs 59 / 100 for BlackRock, Inc.).
- Segment focus: BlackRock, Inc. has 7 segments (33% in iShares ETFs & ETPs); Costco Wholesale Corporation has 2 segments (98.1% in Warehouse club retail).
- Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Weak.
- Moat breadth: BlackRock, Inc. has 10 moat types across 2 domains; Costco Wholesale Corporation has 6 across 3.
Primary market context
BlackRock, Inc.
iShares ETFs & ETPs
Exchange-traded funds (ETFs) and exchange-traded products (ETPs)
Global
Institutional and retail (via intermediaries)
ETF sponsor / asset manager
33%
Costco Wholesale Corporation
Warehouse club retail
Membership warehouse club retail (warehouse clubs, ancillary services, and e-commerce)
Global
Households and small businesses
Retailer (membership club)
98.1%
Side-by-side metrics
Moat coverage
Shared moat types
BlackRock, Inc. strengths
Costco Wholesale Corporation strengths
Segment mix
BlackRock, Inc. segments
Full profile >iShares ETFs & ETPs
Oligopoly
Institutional Index Mandates (Non-ETF)
Oligopoly
Active & Multi-Asset (Public Markets)
Competitive
Alternatives & Private Markets
Oligopoly
Cash Management (MMFs & cash solutions)
Competitive
Aladdin & Technology Services
Oligopoly
Distribution & Advisory Services
Competitive
Costco Wholesale Corporation segments
Full profile >Warehouse club retail
Oligopoly
Membership fees (subscription)
Oligopoly
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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.