What a stock and a share really are
Strip away the tickers and tape. A share is a slice of a real business — and a market is a moody crowd pricing it.
Strip away the screens and tickers, and a stock is something almost embarrassingly simple. It is a slice of ownership in a real business — a coffee chain, a chip maker, a logistics company. If you own a share, you own a tiny, tiny piece of that company's future profits. That's it. That's the whole thing.
Everything else — the flickering prices, the pundits, the charts — is the noise that surrounds this small fact. Useful sometimes. Distracting often.
Where shares come from
When a company needs money to grow — to open factories, hire engineers, buy competitors — it has two main options. It can borrow (issue bonds), or it can sell pieces of itself (issue shares). Selling shares is called equity financing. The first time a company does this publicly is its IPO, initial public offering.
From that point on, those shares trade among investors on a stock exchange. The company itself usually isn't involved in the daily trading. When a share moves from one investor to another, it's like a baseball card changing hands — the team doesn't get any new money from it.
Why prices move
A share's price reflects what people, collectively, think the business is worth today — based on what they expect it to earn in the future. Two things drive prices: fundamentals (actual profits, growth, competition) and sentiment (what mood the crowd is in).
Over years, fundamentals dominate. Over days, sentiment does. This is why short-term trading is mostly a guessing game about other people's moods, and long-term investing is closer to ordinary patience.
- Share.
- A unit of ownership in a company.
- Stock.
- Used interchangeably with share. 'A stock' = the equity of one company.
- Index.
- A weighted basket of many stocks (e.g. S&P 500). A way to track a whole market at once.
- Dividend.
- A portion of a company's profits paid out directly to shareholders, usually quarterly.
The market is not the economy
A common confusion: the stock market goes up while everyone you know feels poorer, or vice versa. This is normal. The market reflects expected future profits of large public companies. The economy reflects everyone's daily life. They're related, but they aren't the same animal.
Now that you know what a share is, the obvious question is what to do with that knowledge. That's the next chapter.