What Is a Stock? Understanding Shares in Plain English

Why do companies issue stock?

Companies sell shares to raise money for growth — building factories, hiring staff, launching products, or paying off debt. Instead of taking a loan, they bring in investors as partial owners. In exchange, those investors share in the company's future profits and growth.

How does a stock's price go up or down?

Stock prices are determined by supply and demand. If more people want to buy a stock than sell it, the price rises. If more people want to sell than buy, the price falls. What drives that sentiment? A mix of company performance (earnings, revenue, growth), economic conditions, industry trends, and investor expectations about the future.

Two ways stockholders can make money

Stock investors can potentially profit in two ways:

• Price appreciation — the stock price rises above what you paid for it, so you can sell at a gain
• Dividends — some companies pay a share of their profits to stockholders on a regular schedule

Common stock vs. preferred stock

Most investors buy common stock, which gives you voting rights on company decisions and the ability to share in profits. Preferred stock is less common for individual investors — it typically pays a fixed dividend but usually comes without voting rights and has different rules in the event of bankruptcy.

Stocks vs. bonds

When you buy a bond, you're lending money to a company or government — they promise to pay you back with interest. With a stock, you're becoming a partial owner. Stocks carry more risk (and potential reward) than bonds because owners are paid after lenders if a company fails. That's why a balanced portfolio often includes both.

Frequently Asked Questions