VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

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Stock Comparison

Martin Marietta Materials, Inc. vs Zimmer Biomet Holdings, Inc.

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

Martin Marietta Materials, Inc.

MLM · NYSE

Market cap (USD)$37.9B

Gross margin (TTM)—

Operating margin (TTM)—

Net margin (TTM)—

SectorMaterials

IndustryConstruction Materials

CountryUS

Data as of2026-01-01

Moat score

78/ 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 Martin Marietta Materials, Inc.'s moat claims, evidence, and risks.

View MLM analysis

Zimmer Biomet Holdings, Inc.

ZBH · New York Stock Exchange

Market cap (USD)$17.9B

Gross margin (TTM)71.4%

Operating margin (TTM)16.6%

Net margin (TTM)10.1%

SectorHealthcare

IndustryMedical - Devices

CountryUS

Data as of2025-12-23

Moat score

72/ 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 Zimmer Biomet Holdings, Inc.'s moat claims, evidence, and risks.

View ZBH analysis

Comparison highlights

Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 72 / 100 for Zimmer Biomet Holdings, Inc.).
Segment focus: Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group); Zimmer Biomet Holdings, Inc. has 4 segments (41.3% in Knees).
Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
Moat breadth: Martin Marietta Materials, Inc. has 4 moat types across 2 domains; Zimmer Biomet Holdings, Inc. has 7 across 5.

Primary market context

Martin Marietta Materials, Inc.

East Group

Market

Construction aggregates and asphalt products (crushed stone, sand & gravel; asphalt) in local/regional markets

Geography

United States (East/Southeast and adjacent regions)

Customer

Infrastructure agencies, construction contractors, and downstream materials producers (asphalt/ready-mix)

Role

Quarry/mining operator and building materials producer/distributor

Revenue share

52.4%

Zimmer Biomet Holdings, Inc.

Knees

Market

Knee reconstruction implants (primary, partial, revision) plus associated instruments and orthopedic robotics/navigation

Geography

Global

Customer

Hospitals and ambulatory surgery centers

Role

OEM manufacturer

Revenue share

41.3%

Side-by-side metrics

Martin Marietta Materials, Inc.

Zimmer Biomet Holdings, Inc.

Ticker / Exchange

MLM - NYSE

ZBH - New York Stock Exchange

Market cap (USD)

$37.9B

$17.9B

Gross margin (TTM)

n/a

71.4%

Operating margin (TTM)

n/a

16.6%

Net margin (TTM)

n/a

10.1%

Sector

Materials

Healthcare

Industry

Construction Materials

Medical - Devices

HQ country

Primary segment

East Group

Knees

Market structure

Oligopoly

Market share

n/a

30.1% (reported)

HHI estimate

n/a

2,265

Pricing power

Strong

Moderate

Moat score

78 / 100

72 / 100

Moat domains

Supply, Financial

Demand, Supply, Legal, Financial, Network

Last update

2026-01-01

2025-12-23

Moat coverage

Shared moat types

Benchmark Pricing Power

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalCapex Knowhow Scale

Zimmer Biomet Holdings, Inc. strengths

Design In QualificationService Field NetworkRegulated Standards PipeScope EconomiesEcosystem ComplementsData Workflow Lockin

Segment mix

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

Zimmer Biomet Holdings, Inc. segments

Full profile >

Knees

Oligopoly

41.3%

Hips

Oligopoly

26%

S.E.T. (Sports Medicine, Extremities, Trauma, CMFT)

Competitive

24.3%

Technology & Data, Bone Cement and Surgical

Oligopoly

8.3%

Want the full wide moat stocks list?

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

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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.