Own a Slice
What it really means to own a tiny piece of a company, and why patience matters more than cleverness.
Hatchlings · Ages 5–6
A share is like one slice of a very big pizza.
Some companies are enormous. The one that makes your favourite biscuits might have thousands of people working for it. Companies that big get split up into millions of tiny pieces, and each piece is called a share.
If you own one share, you own one tiny slice of that whole company. Not the building, and not the biscuits. Just a very small piece of the whole thing.
When lots of people buy those biscuits, the company does well, and your little slice can become worth a bit more. Sometimes it becomes worth a bit less instead. That happens too, and it's normal.
Try this: Draw a big circle and cut it into eight slices. Colour in just one. That one slice is you: a small piece of something much bigger.
Fledglings · Ages 7–8
Owning a share means owning a real piece of a real company, and being along for the ride.
Companies need money to grow. One way to get it is to sell small pieces of themselves to lots of people. Each piece is a share, and anyone who owns one really is a part-owner.
That means when the company does well, your piece can become worth more. But it works the other way too: if the company struggles, your piece can be worth less than you paid. Nobody can promise which way it will go. That's the important difference from a bank account, where your money grows slowly but safely, which we explained in Growing It.
Share prices also wiggle about constantly: up a bit, down a bit, sometimes for no reason you could ever spot. It can look alarming. But wiggles that feel enormous on a Tuesday tend to look tiny when you're looking back over years.
That's why grown-ups say investing is for money you won't need for a long time.
Try this: Pick a shop or a company you like. Talk about why other people might want to buy from it, and what might make them stop. That's the whole question investors are trying to answer.
High Flyers · Ages 9–10
A share makes you a part-owner. The price moves because of what people believe about the future, which is why nobody can predict it.
When a company wants to grow, one option is to sell shares, small units of ownership, to the public. Buy one and you're not lending the company money; you own a slice of it. If it grows over decades, owners share in that. If it fails, owners can lose what they put in.
Shares are bought and sold on a stock market, which is a place where owners and would-be owners agree prices. Most people are surprised by what a share price measures. Not how good the company is today, but what buyers and sellers believe about its future. That's why prices move on rumours, and why two sensible people can look at the same company and disagree completely.
Because it runs on beliefs about the future, short-term movements are unpredictable. Not "hard to predict". Unpredictable. Anyone certain about what a price will do next week is guessing.
One idea does reliably reduce risk, and cleverness has nothing to do with it: don't put everything in one place. Own slices of many different companies and one going wrong stops being a disaster. Grown-ups call this diversifying.
This is also why investing is described as being for money you won't need for years. That's arithmetic rather than patience: a long stretch of time gives the wiggles room to matter less.
Try this: Pick five companies you know. Write down today's date and what you think each one will be worth in a year: bigger, smaller, or about the same. Seal it in an envelope. Open it in a year. Then ask the honest question: were you right, or were you lucky?
What's next
The next zone in Money World is Spending It Well — needs and wants, simple plans, and the tricks adverts use.