VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Fastenal Company vs United Rentals, Inc.

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

Fastenal Company

FAST · Nasdaq Stock Market

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorIndustrials
CountryUS
Data as of2026-01-01
Moat score
60/ 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 Fastenal Company's moat claims, evidence, and risks.

View FAST analysis

United Rentals, Inc.

URI · New York Stock Exchange

Market cap (USD)$51.5B
Gross margin (TTM)35.9%
Operating margin (TTM)25.1%
Net margin (TTM)15.8%
SectorIndustrials
CountryUS
Data as of2026-01-01
Moat score
63/ 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 United Rentals, Inc.'s moat claims, evidence, and risks.

View URI analysis

Comparison highlights

  • Moat score gap: United Rentals, Inc. leads (63 / 100 vs 60 / 100 for Fastenal Company).
  • Segment focus: Fastenal Company has 3 segments (54.5% in Branch-based distribution (in-market branches)); United Rentals, Inc. has 2 segments (70.7% in General Rentals).
  • Primary market structure: Competitive vs Competitive. Pricing power: Weak vs Moderate.
  • Moat breadth: Fastenal Company has 5 moat types across 2 domains; United Rentals, Inc. has 9 across 3.

Primary market context

Fastenal Company

Branch-based distribution (in-market branches)

Market

Industrial & construction supplies distribution (MRO/OEM consumables) via local branches

Geography

North America (primary) + select international

Customer

B2B

Role

Distributor / MRO supplier

Revenue share

54.5%

United Rentals, Inc.

General Rentals

Market

Construction & industrial equipment rental (general line)

Geography

United States and Canada

Customer

Construction and industrial companies, manufacturers, utilities, municipalities, homeowners

Role

Equipment rental provider / fleet operator

Revenue share

70.7%

Side-by-side metrics

Fastenal Company
United Rentals, Inc.
Ticker / Exchange
FAST - Nasdaq Stock Market
URI - New York Stock Exchange
Market cap (USD)
n/a
$51.5B
Gross margin (TTM)
n/a
35.9%
Operating margin (TTM)
n/a
25.1%
Net margin (TTM)
n/a
15.8%
Sector
Industrials
Industrials
HQ country
US
US
Primary segment
Branch-based distribution (in-market branches)
General Rentals
Market structure
Competitive
Competitive
Market share
n/a
9.5%-11% (implied)
HHI estimate
n/a
n/a
Pricing power
Weak
Moderate
Moat score
60 / 100
63 / 100
Moat domains
Supply, Demand
Supply, Demand, Legal
Last update
2026-01-01
2026-01-01

Moat coverage

Shared moat types

Physical Network DensityOperational ExcellenceData Workflow LockinScope Economies

Fastenal Company strengths

Switching Costs General

United Rentals, Inc. strengths

Preferential Input AccessBrand TrustService Field NetworkCompliance AdvantageCapacity Moat

Segment mix

Fastenal Company segments

Full profile >

Branch-based distribution (in-market branches)

Competitive

54.5%

Onsite solutions (embedded customer locations)

Competitive

42.4%

Other / non-traditional sales (services & custom manufacturing)

Competitive

3.1%

United Rentals, Inc. segments

Full profile >

General Rentals

Competitive

70.7%

Specialty

Competitive

29.3%

Want the full wide moat stocks list?

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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.