VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

Amazon.com, Inc. vs BlackRock, Inc.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

Amazon.com, Inc.

AMZN · NASDAQ

Market cap (USD)$2.5T
SectorConsumer
CountryUS
Data as of2025-12-29
Moat score
87/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Amazon.com, Inc.'s moat claims, evidence, and risks.

View AMZN analysis

BlackRock, Inc.

BLK · New York Stock Exchange

Market cap (USD)$168.1B
SectorFinancials
CountryUS
Data as of2025-12-31
Moat score
59/ 100

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 analysis

Comparison highlights

  • Moat score gap: Amazon.com, Inc. leads (87 / 100 vs 59 / 100 for BlackRock, Inc.).
  • Segment focus: Amazon.com, Inc. has 4 segments (73.5% in Amazon Stores (Retail, Marketplace, Prime Subscriptions)); BlackRock, Inc. has 7 segments (33% in iShares ETFs & ETPs).
  • Moat breadth: Amazon.com, Inc. has 10 moat types across 4 domains; BlackRock, Inc. has 10 across 2.

Primary market context

Amazon.com, Inc.

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Market

US retail ecommerce marketplace and online retail (integrated fulfillment + membership shipping)

Geography

United States

Customer

Consumers and third-party merchants

Role

Marketplace operator, retailer, and fulfillment provider

Revenue share

73.5%

BlackRock, Inc.

iShares ETFs & ETPs

Market

Exchange-traded funds (ETFs) and exchange-traded products (ETPs)

Geography

Global

Customer

Institutional and retail (via intermediaries)

Role

ETF sponsor / asset manager

Revenue share

33%

Side-by-side metrics

Amazon.com, Inc.
BlackRock, Inc.
Ticker / Exchange
AMZN - NASDAQ
BLK - New York Stock Exchange
Market cap (USD)
$2.5T
$168.1B
Sector
Consumer
Financials
HQ country
US
US
Primary segment
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
iShares ETFs & ETPs
Market structure
Oligopoly
Oligopoly
Market share
39%-42% (estimated)
28.3% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
87 / 100
59 / 100
Moat domains
Supply, Demand, Network, Financial
Supply, Demand
Last update
2025-12-29
2025-12-31

Moat coverage

Shared moat types

Scope EconomiesLong Term ContractsSuite BundlingDistribution Control

Amazon.com, Inc. strengths

Capex Knowhow ScaleTwo Sided NetworkPhysical Network DensityHabit DefaultNegative Working CapitalData Network Effects

BlackRock, Inc. strengths

Scale Economies Unit CostBrand TrustOperational ExcellenceSwitching Costs GeneralProcurement InertiaData Workflow Lockin

Segment mix

Amazon.com, Inc. segments

Full profile >

Amazon Web Services (AWS)

Oligopoly

16.9%

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Oligopoly

73.5%

Advertising Services (Amazon Ads / Retail Media)

Oligopoly

8.8%

Other (healthcare, content licensing/distribution, shipping services, co-branded credit card agreements, etc.)

Competitive

0.9%

BlackRock, Inc. segments

Full profile >

iShares ETFs & ETPs

Oligopoly

33%

Institutional Index Mandates (Non-ETF)

Oligopoly

5.7%

Active & Multi-Asset (Public Markets)

Competitive

27.5%

Alternatives & Private Markets

Oligopoly

13.5%

Cash Management (MMFs & cash solutions)

Competitive

5.1%

Aladdin & Technology Services

Oligopoly

7.9%

Distribution & Advisory Services

Competitive

7.3%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

View the moat stocks list

Curation & 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.