Chapter 8

What Are ETFs?

A basket full of company icons — one purchase, many companies

An ETF is a simple way to invest in many companies at the same time.

ETF stands for Exchange-Traded Fund, but the name doesn't matter. What matters is this: instead of picking one company and hoping it does well, an ETF lets you buy hundreds or thousands of companies in one go.

Think of it like pizza (again)

Buying one stock = buying one slice from one pizza shop. You'd better hope that shop is good.

Buying an ETF = buying one slice from hundreds of pizza shops at once. Even if a few shops are terrible, the rest carry you.

Illustration comparing buying one stock (one pizza shop) versus an ETF (one slice from hundreds of pizza shops)

An ETF can include:

  • Hundreds or thousands of companies
  • From different industries
  • Across different countries

This automatic spreading is called diversification — and it's your best protection against any single company going bust.

Some real examples

  • S&P 500 ETF — owns the 500 biggest companies in the US (Apple, Microsoft, Amazon, Google, etc.)
  • MSCI ACWI ETF — owns 3,000+ companies from all over the world
  • Nasdaq 100 ETF — owns the 100 biggest US tech companies

When you buy one of these ETFs, you instantly own a small piece of every company inside it.

Active vs. passive investing

There are two ways to invest:

Active investing

You try to beat the market by picking the best stocks at the right time. This requires deep knowledge, constant attention, and strong nerves.

The problem? It almost never works. Around 90% of professional fund managers fail to beat simple ETFs over the long term. If the pros can't do it, what chance do the rest of us have?

Statistic showing that 90% of professional fund managers fail to beat simple ETF index funds over the long term

Passive investing

You don't try to beat the market. You buy the whole market using ETFs, invest regularly, and let time do the work.

This is what this guide recommends. It's simpler, cheaper, less stressful, and historically more profitable than trying to be clever.

Key takeaway

ETFs let you invest in many companies at once. They reduce risk, lower stress, and remove the need to pick winners. For most people, passive investing with ETFs is the simplest and most reliable way to build wealth.

Now let's get practical — starting with the most important step before you invest a single euro.