Table of Contents
Stock exchanges are regulated marketplaces that allow investors to buy and sell shares of stocks, bonds, and other securities. They give investors the opportunity to build wealth through potential price appreciation, dividend income, and other strategies. Stock exchanges give companies the opportunity to raise capital from investors who purchase their stock. However, both investors and companies may lose money on exchanges if prices decline.
Stock exchanges are essentially the drivers of the stock market. Trading on stock exchanges determines the value of public companies’ stock, which means these exchanges play a vital role in the economy. Understanding how stock exchanges work can help you make more informed investing decisions.
Key Points
• A stock exchange is a regulated marketplace where investors buy and sell shares of publicly traded companies, providing transparency, liquidity, and fairness overseen by government agencies like the SEC.
• Major global stock exchanges include Nasdaq with $34.9 trillion market capitalization, the New York Stock Exchange at $30.9 trillion, and several international exchanges across China, Europe, and Asia.
• Stock exchanges serve dual purposes by enabling investors to trade securities for potential profit while allowing businesses to raise capital by issuing shares without taking loans or bonds.
• Most modern stock exchanges operate through electronic trading platforms rather than traditional physical trading floors, with investors accessing markets through licensed online brokerages charging minimal commissions.
• Companies must meet specific listing requirements to trade on an exchange, typically going public through an initial public offering, direct listing, or merger to make shares available to investors.
What Is a Stock Exchange?
A stock exchange is a marketplace where the shares of publicly traded companies are bought and sold between investors. Here’s a bit more about what that means, and how it works.
Meaning and Definition of a Stock Exchange
Exchanges are generally organized by an institution or association that hosts the market, like the New York Stock Exchange or Nasdaq. These organizations and government regulators — like the Securities and Exchange Commission (SEC) in the U.S. — set up the rules and regulations of what companies investors can trade on a stock exchange.
If a company is “listed” on an exchange, it means that the company can be traded on that exchange. Not all companies are listed because each exchange regulates which companies meet their requirements. Companies not listed on the exchange are traded over-the-counter, or OTC for short.
With that all in mind, the definition of a stock exchange is a place where investors can buy or sell stocks or other financial assets.
Major Stock Exchanges
There are many stock exchanges around the world. Here are some of the most notable.
| 10 Largest Stock Exchanges by Market Capitalization of Listed Companies | ||
|---|---|---|
| Exchange | Location | Market capitalization (in trillions)* |
| Nasdaq | U.S. | $34.9 |
| New York Stock Exchange (NYSE) | U.S. | $30.9 |
| Shanghai Stock Exchange | China | $10.2 |
| Euronext | Europe | $8.7 |
| Japan Exchange Group | Japan | $7.6 |
| London Stock Exchange | U.K. | $6.5 |
| Shenzhen Stock Exchange | China | $6.4 |
| Hong Kong Exchanges | Hong Kong | $5.9 |
| TMX Group | Canada | $4.7 |
| National Stock Exchange of India | India | $4.3 |
| *As of March 2026 | ||
Source: Focus: Market Statistics – May 2026.
What Is the Purpose of a Stock Exchange?
Stock exchanges exist because they provide a place for buyers and sellers to come together and trade stocks. Stock exchanges are also important because they provide a way for businesses to raise money. When companies issue stock to raise capital, investors will then trade the company’s shares on the stock exchange in which it’s listed.
The individual stock exchanges set the rules for how stocks are traded. Stock exchanges are also regulated markets, which means that a government agency oversees the activity on the exchange. These rules and regulations provide a level of safety for investors and help to ensure that the market is fair, transparent, and liquid.
What Is the Stock Market?
The stock market is made up of a network of different stock exchanges, including OTC markets, and the companies that are traded on these exchanges.
When you hear mentions of the stock market and its performance, it is usually in reference to a particular stock market index, like the S&P 500 or Dow Jones Industrial Average. However, the stock market is more than the specific companies that make up these stock market indices.
How Do Stock Exchanges Operate?
Investors who want to buy or sell stocks commonly trade through an investment broker, a person or entity licensed to trade on the exchanges. Brokers aim to buy or sell stock at the best price for the investor making the trade, usually earning a commission for the service. Most investors will now use online brokerage firms for this service, paying little to no commissions for trades.
Historically, stock exchanges were physical locations where investors came together on a trading floor to frantically buy and sell stocks, like what you may have seen in the movies or on TV. However, these days, more often than not, stock exchanges operate through an electronic trading platform.
Generally, stock markets facilitate the buying and selling of shares between companies and institutional investors through initial public offerings (IPOs) in the primary market. Once a company has an IPO, the company’s shares are traded in secondary markets, like stock exchanges.
Volatility in the stock market occurs when there are big swings in share prices. Share prices can change for various reasons, like a new product launch or the most recent earnings report. And while volatility in the stock market usually describes significant declines in share prices, volatility can also happen to the upside.
As mentioned above, the stock market allows companies to raise capital by issuing shares to investors. Raising money was one of the main reasons why stock issuances and trading began. It allows businesses to raise money to expand a business without taking out a loan or issuing bonds.
And because investors can own shares of companies, they can benefit from the growth and earnings of a business. Investors can profit from a company’s dividend payments, realize a return when the stock’s price appreciates, or benefit from both. This helps investors build wealth.
The relationship between stock markets, companies, and investors has arguably led to more economic efficiency, allowing money to be allocated in more productive ways.
What Is Stock Exchange Trading?
Stock exchange trading is more or less the same thing as stock trading — the terms basically mean the same thing. Again, it refers to trading stocks or other assets or securities on a stock exchange.
The Takeaway
A stock exchange is a marketplace where investors can buy and sell stocks or other securities, and where companies can list shares to try and raise capital. There are numerous stock exchanges, but the biggest in the U.S. are the New York Stock Exchange and the Nasdaq.
Knowing the ins and outs of stock exchanges and how they influence the broader stock market may help you become a better-informed investor. Further, by learning about stock exchanges, their different rules, and their advantages and disadvantages, you may better understand the stock market and its risks as a whole. This may allow you to invest confidently toward your goals.
Ready to invest in your goals? It’s easy to get started when you open an investment account with SoFi Invest®. You can trade stocks, ETFs, or options through self-directed investing with SoFi Securities, or simply automate your investments with a robo advisor from SoFi Wealth. You'll gain access to alternative investments and upcoming IPOs, and can plan for retirement with a tax-advantaged IRA. With SoFi, you can manage all your investments, all in one place.
FAQ
What is the main purpose of a stock exchange?
The primary purpose of a stock exchange is to connect investors and traders who wish to buy and sell financial securities. It’s a place where buyers, sellers, and matchmakers can come together to facilitate trades.
How does a company get listed on a stock exchange?
To get shares listed on a stock exchange, a company needs to “go public,” meaning that it opens up shares available to the public to buy. This often happens through an initial public offering (IPO), but can occur other ways, too, such as through a direct listing or a merger.
What is the largest stock exchange in the world?
The New York Stock Exchange, or NYSE, is the largest stock exchange in the world.
Can an individual trade directly on a stock exchange?
Individuals cannot trade directly on the stock exchange, and typically do so through a broker or brokerage. This is because there are technical and membership requirements individuals can’t typically meet.
What are the normal trading hours for stock exchanges?
Normal trading hours for stock exchanges are between 9:30am ET and 4pm ET. That’s Monday through Friday, excluding some holidays.
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