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Moat

What is moat?

A moat is a durable competitive advantage that makes a business hard for rivals to displace. It is a qualitative concept, best supported by measurable evidence like sustained margins rather than treated as a label on its own.

Written by
Suggested Investments Research Team
Content type
Reference definition
Published
2026-09-13
Last reviewed
2026-09-13

Where advantages actually come from

Common sources include network effects, high switching costs, durable cost advantages, intellectual property, regulatory barriers and brand strength that supports pricing power. Different sources tend to hold up for different lengths of time.

Moats erode

Technology shifts, regulation and new entrants can narrow or eliminate an advantage that looked durable for years. A moat description should be treated as a current assessment, not a permanent fact.

Hard to measure directly

There is no single financial-statement line item for 'moat'. The closest evidence is whether margins and returns on capital have stayed elevated over many years despite competitive pressure, which suggests something is genuinely protecting the business.

A worked example

A business that has sustained a materially higher operating margin than its direct competitors for over a decade, without losing market share, is showing the kind of persistence a genuine moat would produce — though the cause still has to be identified, not assumed.

The mistake people make

Treating brand recognition or size alone as proof of a moat without evidence that it translates into pricing power or durable returns on capital.

How we use it

Signs of a durable competitive position are part of the qualitative context behind Long-Term Potential, one of the four scored components of the Suggested Investment Score, and are triangulated against measured trends such as margins and returns on capital rather than scored as a standalone label.

Related terms

What makes a quality company

Sources and methodology

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Educational information only. Nothing here is a recommendation to buy or sell any investment, and no research measurement removes the risk of loss.