Capital & Financing

How the Stock Market Works

Understand the stock market in plain terms — a share is a piece of a real business, the market is where those pieces are priced and traded, and a share's enduring value comes from the company's ability to generate profits and grow.

  • Advanced
  • 14 min total
  • 13 chapters

What decision this helps you make: How to think about what a stock actually is and where its value comes from — the foundation for every capital-markets decision.

What this topic is

The stock market is a marketplace where ownership stakes in companies — shares of stock — are bought and sold. A share is a fractional ownership claim on a real business and its future profits.

Why it matters

Understanding that a share is a piece of a business (not just a moving number), that most trading is investors exchanging existing shares (not companies raising money), and that value traces to the company's ability to generate profits, is the foundation for every capital-markets decision.

Who should learn it

Anyone who wants to understand what a stock actually is and where its value comes from.

What you will understand

  • Understand a share as fractional ownership of a real business
  • See where a share's value comes from (profits and growth)
  • Know the difference between an IPO and secondary trading
  • See why prices track value long-run but swing short-run

Prerequisites

Common misconception

"A stock is just a number that goes up and down — a ticker to bet on." A stock is a fractional ownership claim on a real business — owning a share means owning a tiny slice of a company and its future profits. Its enduring value comes from the company's ability to generate profits and grow, not from the ticker. And most stock-market activity is investors trading existing shares with each other, not companies raising money. Understand a share as a piece of a business, and the market makes sense.