An ETF is a basket of stocks or bonds you can buy and sell like a single stock

ETF stands for exchange-traded fund. It is a collection of investments — usually stocks, bonds, or a mix of both — bundled together and sold as one package. You buy shares of the ETF itself, not the individual investments inside it. The price of an ETF share moves up and down during the trading day, just like a regular stock price does.

Think of it like buying a slice of pizza instead of buying an entire pizza. The pizza is made of many ingredients, but you get a piece that represents a portion of the whole thing. With an ETF, you own a small piece of many different companies or bonds, all in one purchase.

Key Takeaways

  • An ETF holds many investments inside it, so buying one ETF share gives you exposure to dozens or hundreds of companies at once.
  • ETF prices change throughout the trading day, and you can buy or sell shares whenever the stock market is open.
  • ETFs are cheaper to own than buying individual stocks because the fund manager handles all the buying and selling for you.
  • Some ETFs track a specific index like the S&P 500, while others focus on a theme like technology companies or dividend-paying stocks.

How an ETF differs from owning individual stocks

When you buy a single company's stock, you own a piece of that one company. If that company does poorly, your investment loses value. When you buy an ETF, you own a piece of many companies at once. If one company in the fund does poorly, the impact on your overall investment is smaller because you also own pieces of other companies that may be doing well.

This spread of ownership is called diversification. It reduces the risk that any single bad investment will hurt you badly. An ETF with 100 stocks inside it means your money is spread across 100 different bets instead of one.

What's inside an ETF

An ETF can hold stocks, bonds, commodities like gold, or a combination of these. The contents depend on what the ETF is designed to do. Some ETFs try to match the performance of a well-known index — a pre-made list of stocks. The S&P 500 index, for example, tracks 500 large U.S. companies. An ETF that tracks the S&P 500 will hold shares of those same 500 companies in roughly the same proportions.

Other ETFs are built around a specific theme or strategy. Some hold only technology companies. Others hold only stocks that pay dividends — regular cash payments to shareholders. Some hold bonds from the U.S. government. The fund manager decides what goes in based on the ETF's stated goal, which you can find in the fund's prospectus, a document that describes what the fund owns and how it works.

Why people buy ETFs instead of individual stocks

Buying an ETF is simpler than researching and buying 50 different stocks on your own. You do not have to decide which companies to pick or monitor each one separately. The fund manager does that work for you. You pay a small fee for this service, but it is usually much lower than paying a financial advisor to pick stocks for you.

ETFs also let you invest in areas you might not be able to reach alone. If you want to own a piece of 500 large companies, buying 500 individual stocks would cost a lot of money and take a lot of time. An ETF lets you do it with one purchase. The same is true for bonds, international stocks, or specialized sectors.

How ETF prices work during the trading day

Unlike mutual funds, which are priced once at the end of each trading day, ETF prices change constantly while the stock market is open. You can buy or sell an ETF share at any time during market hours, just as you would with a regular stock. This means you can react quickly if you want to get in or out of an investment.

The price of an ETF share is based on the value of all the investments inside it. If the stocks or bonds in the fund go up in value, the ETF share price goes up. If they go down, the share price goes down. The price also reflects supply and demand — if many people want to buy the ETF, the price may go up slightly even if the holdings have not changed.

Costs of owning an ETF

Every ETF charges a fee called an expense ratio. This is a yearly percentage of your investment that goes to the fund manager to cover the cost of running the fund. A typical expense ratio might be 0.05% to 0.50% per year, though some are higher and some are lower. This fee is taken automatically from the fund's value, so you do not write a check for it — it just reduces your returns slightly.

You may also pay a commission when you buy or sell ETF shares, depending on which brokerage you use. Many brokerages now offer commission-free trading on ETFs, so this cost has become less common. Before you buy, check whether your brokerage charges a commission.

ETFs versus mutual funds

Mutual funds and ETFs are similar in that both hold a collection of investments. The main differences are timing and cost. Mutual fund prices are set once per day, after the market closes. ETF prices update throughout the day. Mutual funds often have higher expense ratios than ETFs, and mutual funds may charge a sales fee when you buy in. ETFs are usually cheaper to own over time.

Both can be good investments depending on your situation. If you want to buy and hold for a long time, the lower costs of an ETF often make it the better choice. If you prefer to set it and forget it and do not care about intraday price changes, a mutual fund works fine too.

Frequently Asked Questions

Can I lose money in an ETF?

Yes. If the stocks or bonds inside the ETF fall in value, your investment falls too. ETFs reduce risk through diversification, but they do not eliminate it. The value of your ETF shares can go down as well as up.

Do ETFs pay dividends?

Some do. If the stocks inside the ETF pay dividends, the ETF collects those payments and distributes them to shareholders. You can usually choose to receive the cash or reinvest it automatically. Not all ETFs pay dividends — it depends on what stocks or bonds are inside.

How do I buy an ETF?

You buy an ETF through a brokerage account, the same way you would buy a stock. You need a brokerage account with a bank or investment firm, search for the ETF by its ticker symbol, and place an order to buy a certain number of shares. The transaction usually settles within two business days.

What does the ticker symbol mean?

Every ETF has a short ticker symbol — usually three to five letters — that identifies it. For example, SPY is a popular ETF that tracks the S&P 500. The ticker is how you find and order the ETF through your brokerage. You can look up a ticker symbol on financial websites to learn what the ETF holds.

Is an ETF the same as an index fund?

Not exactly. An index fund is a type of fund that tracks a specific index like the S&P 500. An ETF is a structure — a way of packaging and selling investments. Many ETFs are index funds, but not all. Some ETFs are actively managed, meaning a manager picks the holdings instead of just copying an index.