What Is the Stock Market and How Does It Work?

What Is the Stock Market and How Does It Work?

The stock market is where investors connect to buy and sell investments — most commonly, stocks, which are shares of ownership in a public company.

Definition: What is the stock market?

The term “stock market” often refers to one of the major stock market indexes, such as the Dow Jones Industrial Average or the S&P 500. Because it’s hard to track every single stock, these indexes include a section of the stock market and their performance is viewed as representative of the entire market.

You might see a news headline that says the stock market has moved lower, or that the stock market closed up or down for the day. Most often, this means stock market indexes have moved up or down, meaning the stocks within the index have either gained or lost value as a whole. Investors who buy and sell stocks hope to turn a profit through this movement in stock prices.