VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

Wide Moat Stocks Home My Collections

Stock Comparison

Martin Marietta Materials, Inc. vs Waste Management, 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

Waste Management, Inc.

WM · New York Stock Exchange

Market cap (USD)$88B

Gross margin (TTM)28.9%

Operating margin (TTM)17.6%

Net margin (TTM)10.4%

SectorIndustrials

IndustryWaste Management

CountryUS

Data as of2025-12-31

Moat score

79/ 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 Waste Management, Inc.'s moat claims, evidence, and risks.

View WM analysis

Comparison highlights

Moat score gap: Waste Management, Inc. leads (79 / 100 vs 78 / 100 for Martin Marietta Materials, Inc.).
Segment focus: Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group); Waste Management, Inc. has 4 segments (82.2% in Collection and Disposal).
Moat breadth: Martin Marietta Materials, Inc. has 4 moat types across 2 domains; Waste Management, Inc. has 7 across 3.

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%

Waste Management, Inc.

Collection and Disposal

Market

Municipal, commercial, and industrial solid waste collection, transfer, and landfill disposal

Geography

North America (primarily US and Canada)

Customer

Municipalities and end-customers (residential, commercial, industrial) via direct and contract channels

Role

Integrated hauler + transfer + landfill owner/operator

Revenue share

82.2%

Side-by-side metrics

Martin Marietta Materials, Inc.

Waste Management, Inc.

Ticker / Exchange

MLM - NYSE

WM - New York Stock Exchange

Market cap (USD)

$37.9B

$88B

Gross margin (TTM)

n/a

28.9%

Operating margin (TTM)

n/a

17.6%

Net margin (TTM)

n/a

10.4%

Sector

Materials

Industrials

Industry

Construction Materials

Waste Management

HQ country

Primary segment

East Group

Collection and Disposal

Market structure

Oligopoly

Market share

n/a

HHI estimate

n/a

Pricing power

Strong

Moat score

78 / 100

79 / 100

Moat domains

Supply, Financial

Legal, Supply, Demand

Last update

2026-01-01

2025-12-31

Moat coverage

Shared moat types

Physical Network Density

Martin Marietta Materials, Inc. strengths

Geographic NaturalBenchmark Pricing PowerCapex Knowhow Scale

Waste Management, Inc. strengths

Permits Rights Of WayCapacity MoatPricing power via yield management and contracted rate actionsOperational ExcellencePreferential Input AccessRegulated Standards Pipe

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%

Waste Management, Inc. segments

Full profile >

Collection and Disposal

Oligopoly

82.2%

Recycling Processing and Sales

Competitive

WM Renewable Energy

Competitive

1.7%

WM Healthcare Solutions

Oligopoly

10%

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.