The front of the New York
Stock Exchange

The stock market appears in the news every day. You hear about it any time it reaches a new high or a new low, and you also hear about it daily in statements like "The Dow Jones Industrial Average rose 2 percent today, with advances leading declines by a margin of..."

Obviously, stocks and the stock market are important, but you may find that you know very little about them. What is a stock? What is a stock market? Why do we need a stock market? Where does the stock come from to begin with, and why do people want to buy and sell it? If you have questions like these, then this edition HowStuffWorks will open your eyes to a whole new world!