The stock market is a platform where shares of publicly traded companies are bought and sold. It allows investors to purchase ownership in companies, which can lead to profits if the company performs well. The prices of stocks fluctuate based on supply and demand, as well as the overall performance of the economy. Investors can participate in the stock market through various exchanges, such as the New York Stock Exchange or the NASDAQ. Many people invest in stocks as a way to grow their wealth over time, but it also carries risks, as stock prices can drop unexpectedly.