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Lesson 1 of 5 ยท 6 min read

What is a stock?

A stock is a small piece of ownership in a company.

A piece of a company

Buy 1 Apple share and you're a co-owner of Apple โ€” very small, but real. A company is split into millions or billions of these pieces. When the company becomes more valuable, your piece usually rises with it. When things go badly, it falls.

Small-capunder $2BMid-cap$2โ€“10BLarge-capabove $10B
Market cap sizes companies: small-, mid- and large-cap.

A simple example

Imagine: a pizza shop is split into 100 shares and is worth โ‚ฌ100,000 in total. One share is then โ‚ฌ1,000 (1% of the shop). If the shop doubles in value to โ‚ฌ200,000, your share is worth โ‚ฌ2,000. It works the same way at Apple โ€” just with a lot more zeros and shares.

Revenue +14%Margin 28%P/E 22price 1yr โ†—
Company profile: combine the price trend with key figures (revenue growth, margin, valuation) for one complete picture.

Why do companies sell shares?

To raise money to grow: new products, people, factories. Instead of an expensive bank loan, they sell pieces of ownership to investors. That's called 'going public' (an IPO).

Companysharesโ†’ investorscapitalto grow
A company issues shares to investors and receives capital to grow.

How do you earn? โ€” capital gains

Way 1: capital gains. You buy low and sell (hopefully) higher. Buy a share for โ‚ฌ100 and sell it later for โ‚ฌ130, and you have โ‚ฌ30 profit per share. Until you sell it's 'paper' profit โ€” it only becomes real when you sell.

โ†— Higher highs
Uptrend: higher highs and higher lows. The trend line points up.

How do you earn? โ€” dividends

Way 2: dividends. Some companies pay out a portion of their profit to shareholders, usually each quarter. It's a kind of 'rent' you receive simply because you own the share โ€” regardless of whether the price rises.

'20'21'22'23'24'25โ†— higher dividend every year
Dividend growth: companies that raise their dividend year after year are often stable and profitable.

In practice

If you own 50 shares of a company that pays โ‚ฌ2 dividend per share per year, you'll receive โ‚ฌ100 per year โ€” just for holding the shares, regardless of the price.

Stocks โ‰  gambling

A casino is pure chance. A stock is a piece of a real company that sells products and makes profit. In the short term the price moves erratically, but in the long term it follows the value of the company. That's why learning and patience are the key.

Bull โ–ฒBear โ–ผ
A bull market rises; a bear market falls 20% or more.
Market HistoryLong term

S&P 500 historically returned ~7% per year after inflation

Over rolling 20-year periods, the return of the broad U.S. market was almost always positive. The short term is erratic, the long term rewards patience.

Remember this

  • A stock is a small piece of ownership in a real company.
  • You earn in two ways: capital gains (buy low, sell high) and dividends.
  • Dividends are optional โ€” not every company pays out profit.
  • Erratic in the short term, but in the long term the price follows the value of the company.

There is a quiz for this lesson

3 questions that check whether it stuck. They live in the app, because a quiz nobody grades teaches nothing.

Want to practise, not just read?

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What is a stock?