Finance

Why Moats Matter

by Heather Brilliant and Elizabeth Collins

How long can high profits last?

When a business earns high profits, rivals pile in to take them. Heather Brilliant and Elizabeth Collins, who led research teams at Morningstar, explain how its analysts judge which companies can hold off competitors for years, and why that matters to anyone buying shares.

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What you'll learn

  • The castle and its moat
  • Five sources of moat
  • Wide, narrow or none
  • Watch the trend
  • A moat has a price

The key ideas in Why Moats Matter

The castle and its moat

Warren Buffett compared a great business to a castle protected by a moat. Morningstar turned the image into a rating. A moat is a lasting advantage that lets a company earn returns on capital above its cost of capital for years. Without one, competition wears those returns down.

Five sources of moat

Morningstar's analysts look for five sources. Intangible assets, such as brands, patents and licences. Switching costs that make customers stay. The network effect, where more users make a product more useful. Cost advantage. And efficient scale, where a market only has room for a few players.

Wide, narrow or none

Morningstar rates each company's moat. Wide means its analysts are confident the excess returns will last at least ten years, and think they'll more likely than not last twenty. Narrow means they'll more likely than not last ten. No moat means competition should wear them away sooner.

Watch the trend

Morningstar also rates which way a moat is heading, as positive, stable or negative. An advantage can be eroding long before profits show it. The authors treat the trend as an early warning, and as a way to spot moats that are still being dug.

A moat has a price

A great moat doesn't make a share a bargain. Morningstar's analysts estimate what each company is worth and look for a price well below it, demanding a bigger discount when the future is harder to predict. The authors pair the moat rating with this fair value estimate.

Lines worth underlining

  1. The moat

    A moat is a lasting edge that lets a company keep earning high returns while rivals try to catch up.

  2. Intangibles

    Brands, patents and licences can keep rivals out, but only if they let the company charge more.

  3. Switching costs

    When leaving is a pain, customers stay even if a rival is a bit cheaper.

  4. Network effect

    Some services get more useful as more people use them, which makes them hard to beat.

  5. Cost advantage

    A company that makes things more cheaply than anyone else can undercut rivals and still profit.

One thing to try

Name the moat

Pick three companies whose products you use every week. For each, name which of the five sources protects it, if any. Would you switch to a slightly cheaper rival tomorrow? If you would, and no source fits, the company may have no moat at all.

There's more to Why Moats Matter

Knotd has the key ideas from 250+ non-fiction books, each in a few minutes, in plain words. Why Moats Matter comes with a Name That Idea round to make it stick.

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Questions about Why Moats Matter

What is Why Moats Matter about?

How long can high profits last? When a business earns high profits, rivals pile in to take them. Heather Brilliant and Elizabeth Collins, who led research teams at Morningstar, explain how its analysts judge which companies can hold off competitors for years, and why that matters to anyone buying shares.

What are the key ideas in Why Moats Matter?

The castle and its moat; Five sources of moat; Wide, narrow or none; Watch the trend; A moat has a price.

What's one thing to try from Why Moats Matter?

Pick three companies whose products you use every week. For each, name which of the five sources protects it, if any. Would you switch to a slightly cheaper rival tomorrow? If you would, and no source fits, the company may have no moat at all.

Is Why Moats Matter on Knotd?

Yes. Knotd has the key ideas from Why Moats Matter in a few minutes, in plain words, plus a Name That Idea round to test them. It's one of 250+ non-fiction books in the app.