VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

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Stock Comparison

Fiserv, Inc. vs Walmart Inc.

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

Fiserv, Inc.

FISV · NASDAQ

Market cap (USD)$37.7B
Gross margin (TTM)—
Operating margin (TTM)—
Net margin (TTM)—
SectorFinancials
Industry—
CountryUS
Data as of2026-01-10
Moat score
67/ 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 Fiserv, Inc.'s moat claims, evidence, and risks.

View FISV analysis

Walmart Inc.

WMT · New York Stock Exchange

Market cap (USD)$913.1B
Gross margin (TTM)24.9%
Operating margin (TTM)4.1%
Net margin (TTM)3.3%
SectorConsumer
IndustryDiscount Stores
CountryUS
Data as of2025-12-30
Moat score
77/ 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 Walmart Inc.'s moat claims, evidence, and risks.

View WMT analysis

Comparison highlights

  • Moat score gap: Walmart Inc. leads (77 / 100 vs 67 / 100 for Fiserv, Inc.).
  • Segment focus: Fiserv, Inc. has 2 segments (50.4% in Merchant); Walmart Inc. has 3 segments (68.3% in Walmart U.S.).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Weak.
  • Moat breadth: Fiserv, Inc. has 6 moat types across 3 domains; Walmart Inc. has 6 across 4.

Primary market context

Fiserv, Inc.

Merchant

Market

Merchant acquiring and commerce enablement (SMB + enterprise omnichannel payments, POS, gateway/orchestration, and related software)

Geography

Global

Customer

Merchants (SMB and enterprise), plus channel partners (ISVs/ISOs/financial institutions) that serve or refer merchants

Role

Merchant acquirer / payment processor / commerce and POS platform provider

Revenue share

50.4%

Walmart Inc.

Walmart U.S.

Market

U.S. omnichannel discount retail and grocery (supercenters, neighborhood markets, eCommerce)

Geography

United States

Customer

Consumers and small businesses; marketplace sellers and advertisers (for marketplace and retail media offerings)

Role

Retailer / marketplace operator / last-mile fulfillment network

Revenue share

68.3%

Side-by-side metrics

Fiserv, Inc.
Walmart Inc.
Ticker / Exchange
FISV - NASDAQ
WMT - New York Stock Exchange
Market cap (USD)
$37.7B
$913.1B
Gross margin (TTM)
n/a
24.9%
Operating margin (TTM)
n/a
4.1%
Net margin (TTM)
n/a
3.3%
Sector
Financials
Consumer
Industry
n/a
Discount Stores
HQ country
US
US
Primary segment
Merchant
Walmart U.S.
Market structure
Oligopoly
Competitive
Market share
n/a
20%-22% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Weak
Moat score
67 / 100
77 / 100
Moat domains
Network, Supply, Demand
Supply, Demand, Network, Financial
Last update
2026-01-10
2025-12-30

Moat coverage

Shared moat types

Ecosystem ComplementsScale Economies Unit Cost

Fiserv, Inc. strengths

Distribution ControlTraining Org Change CostsTwo Sided NetworkSuite Bundling

Walmart Inc. strengths

Physical Network DensityHabit DefaultSupply Chain ControlFloat Prepayment

Segment mix

Fiserv, Inc. segments

Full profile >

Merchant

Oligopoly

50.4%

Financial

Oligopoly

49.6%

Walmart Inc. segments

Full profile >

Walmart U.S.

Competitive

68.3%

Walmart International

Competitive

18.1%

Sam's Club U.S.

Oligopoly

13.6%

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

Looking for expansion-stage stocks?

Proven models entering the expansion stage with unit economics that work.

View expansion-stage stocks

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.