What Is a Stock?

A share is a piece of ownership

When a company wants to raise money, one way it can do so is by dividing itself into millions of equal pieces called shares. Each share represents a fractional ownership stake in that company — its assets, its future earnings, and its brand.

If Apple has 15 billion shares outstanding and you own one, you own roughly 1/15,000,000,000th of Apple Inc. That sounds tiny, but it means you have a real legal claim on a fraction of the company's value.

Why do companies issue stock?

Companies issue stock to raise capital — money they can use to hire staff, build factories, fund research, or pay off debt. The alternative is taking on loans, which come with interest and repayment pressure.

The first time a private company sells its shares to the public is called an Initial Public Offering (IPO). Think of companies like Google, Amazon, or Tesla — they were all private until their IPO day, when ordinary investors could buy in for the first time.

After the IPO, shares trade freely on stock exchanges like the NYSE or NASDAQ. The company doesn't directly profit from this secondary trading — but it benefits from a high share price because it makes future fundraising easier and keeps employees (often paid partly in stock) motivated.

Two ways to make money from stocks

Once you own shares, there are two ways the investment can pay off:

Growth stocks (like early-stage tech companies) typically reinvest all profits and pay no dividend — you make money only if the price rises. Dividend stocks offer income even if the price stays flat. Most beginner investors focus on growth stocks first.

Common vs. Preferred stock

When people say "I bought Apple stock," they almost always mean common stock. Common shareholders can vote on company decisions (like who sits on the board) and benefit when the company grows — but they're last in line if the company goes bankrupt.

Preferred stock pays a fixed dividend and gets priority over common stock in a bankruptcy — but preferred shareholders usually can't vote. It behaves more like a bond. As a beginner, you'll almost exclusively be dealing with common stock.

What actually moves the price?

Stock prices are set by supply and demand in real time. If more people want to buy a stock than sell it, the price goes up. If more people want to sell, the price drops.

But what drives that buying and selling? A mix of things: company earnings reports, economic news, interest rates, competitor moves, and sometimes pure sentiment. Understanding what moves prices — and how to read a chart to see where prices have been — is what technical analysis is all about.