An ETF is a fund that holds many stocks, and you buy it the same way you buy a single stock

ETF stands for exchange-traded fund. Instead of buying one company's stock, you buy a share of a fund that owns dozens, hundreds, or sometimes thousands of stocks at once. The fund is traded on a stock exchange just like individual stocks are — you can buy and sell it during market hours through a brokerage account.

When you own one share of an ETF, you own a small piece of everything inside it. If an ETF holds 500 stocks and you own one share, you own a tiny fraction of all 500 companies. The fund manager decides which stocks go in, rebalances them over time, and handles all the buying and selling for you.

The main reason people use ETFs is diversification — spreading your money across many companies instead of betting on one. If one stock in the fund drops, the others may hold steady or rise, so your overall investment is less likely to lose value suddenly.

Key Takeaways

  • An ETF is a basket of stocks you can buy as a single investment through any brokerage account, traded like a regular stock during market hours.
  • ETFs hold anywhere from dozens to thousands of individual stocks, so owning one share gives you exposure to many companies at once.
  • Different ETFs track different groups of stocks — some follow the entire market, others focus on specific industries, company sizes, or investment styles.
  • ETF fees are usually lower than actively managed mutual funds because most ETFs simply track an index rather than paying a manager to pick stocks.
  • You can lose money in an ETF if the stocks it holds fall in value, just as you can with individual stocks.

How ETFs differ from individual stocks and mutual funds

When you buy a single stock, you own a piece of one company. When that company does well, the stock price usually rises; when it struggles, the price falls. Your return depends entirely on that one business.

An ETF spreads that risk across many companies. If you own an ETF that holds 100 stocks and one of them crashes, it is one part of 100, so the damage to your overall investment is much smaller. You also get the benefit of diversification without having to research and buy 100 different stocks yourself.

Mutual funds are similar to ETFs — both hold baskets of stocks — but they work differently in practice. Most mutual funds are actively managed, meaning a person or team picks which stocks to buy and sell, trying to beat the market. That active management costs money, so mutual fund fees are usually higher. Most ETFs are passively managed, meaning they simply track an index like the S&P 500, so fees are lower. Also, you can buy and sell mutual funds only once per day at the closing price, while you can trade ETFs any time during market hours like a stock.

Common types of ETFs and what they track

ETFs come in many varieties. A broad market ETF tracks a large index like the S&P 500 (500 large U.S. companies) or the total U.S. stock market. These are the simplest and most diversified — you own a piece of hundreds or thousands of companies with one purchase.

A sector ETF focuses on one industry, like technology, healthcare, energy, or finance. These let you bet on a particular part of the economy without owning individual companies. A bond ETF holds bonds instead of stocks, offering a different type of investment. A dividend ETF holds stocks known for paying regular dividends to shareholders. An international ETF holds stocks from companies outside the United States.

There are also factor ETFs that focus on stocks with specific traits — like small companies, value stocks, or growth stocks — and themed ETFs that hold companies in emerging areas like renewable energy or artificial intelligence. The variety means you can build a portfolio tailored to your goals and beliefs about which parts of the market will perform well.

How fees work and why they matter

Every ETF charges a fee called an expense ratio, expressed as a percentage of what you invest. A 0.05% expense ratio means you pay $5 per year for every $10,000 invested. A 1% expense ratio means you pay $100 per year on the same $10,000.

Most broad market ETFs charge between 0.03% and 0.20% per year — very low. Actively managed ETFs, sector ETFs, and specialty ETFs often charge more, sometimes 0.50% to 1% or higher. Over decades, even small differences add up. If you invest $10,000 in two ETFs that both earn 7% per year, but one charges 0.10% and the other charges 0.75%, the cheaper one will have significantly more money at the end of 30 years.

Beyond the expense ratio, you may pay a commission when you buy or sell an ETF through your brokerage. Many brokerages now offer commission-free trading on ETFs, so check your brokerage's fee schedule. You also pay the bid-ask spread — the tiny difference between the price you pay to buy and the price you receive to sell — though this is usually small for popular ETFs.

Risks of owning ETFs

An ETF can lose value if the stocks inside it fall in price. If you own a broad market ETF and the stock market drops 20%, your ETF will drop roughly 20% too. You can lose money, and there is no may provide you will earn back what you lost.

Some ETFs are riskier than others. A broad market ETF that holds thousands of stocks is generally less risky than a sector ETF focused on one industry, which is less risky than an ETF holding only small, fast-growing companies. The more specialized the ETF, the more its value can swing.

Certain ETFs use leverage or derivatives to try to amplify returns, which can magnify losses just as much. Others are designed to move opposite to the market or track it in reverse — these are meant for short-term trading and can lose value over time even if the market is flat. Read the fund's description before you buy to understand what it holds and how it behaves.

How to buy and sell ETFs

You buy an ETF through a brokerage account — the same account you would use to buy individual stocks. Open an account with a brokerage (many offer no account minimums), fund it with money from your bank, search for the ETF by its ticker symbol (a short code like SPY or VOO), and place a buy order just as you would for a stock.

Your order executes during market hours — typically 9:30 a.m. to 4 p.m. Eastern time on weekdays when the U.S. stock market is open. You receive confirmation, and the ETF shares appear in your account. You can hold them for years or sell them whenever you want during market hours.

When you sell, you receive cash based on the ETF's price at that moment. If the price has risen since you bought, you have a gain; if it has fallen, you have a loss. You will owe taxes on any gains you sell, though if you hold the ETF in a tax-advantaged account like an IRA or 401(k), you may not owe taxes until you withdraw the money.

ETFs versus picking individual stocks

Picking individual stocks requires research — reading financial statements, understanding the business, tracking news about the company, and deciding when to buy and sell. Most people who try this underperform the overall market because picking winners consistently is difficult. ETFs let you own the market or a broad slice of it without that work.

If you believe you can identify companies that will outperform, individual stocks may appeal to you. But most financial advisors recommend that most people start with broad market ETFs, which give you diversification and low fees with minimal effort. You can always add individual stocks later if you want to.

A common middle ground is to hold mostly broad market ETFs and use a small portion of your portfolio to experiment with individual stocks or specialty ETFs. This way, the bulk of your money benefits from diversification while you explore other strategies.

Frequently Asked Questions

Can I lose all my money in an ETF?

You can lose a large portion of your money if the stocks in the ETF fall sharply, but losing everything is unlikely with a broad market ETF because it holds hundreds or thousands of companies. A specialty ETF focused on one sector or strategy is riskier. Historically, the U.S. stock market has recovered from every major decline, but past performance does not may provide future results.

Do I get dividends from an ETF?

Many ETFs hold stocks that pay dividends. The ETF collects those dividends and either pays them to you or reinvests them automatically, depending on the ETF and your brokerage settings. You can usually choose which option you prefer.

What is the difference between an ETF and an index fund?

An index fund is a type of mutual fund that tracks an index like the S&P 500. An ETF can also track an index. The main differences are that ETFs trade like stocks (any time during market hours) while index mutual funds trade once per day, and ETFs usually have lower fees. Both are forms of passive investing.

Should I buy ETFs or individual stocks?

Most people benefit from starting with broad market ETFs because they offer instant diversification and require no stock-picking skill. Individual stocks are riskier and require more research. Many investors use both — a core holding of ETFs for stability and a smaller portion of individual stocks for learning or higher-risk bets.

How much money do I need to start buying ETFs?

Most brokerages have no account minimum, and you can buy a single share of an ETF for whatever its current price is — often between $50 and $200 per share. You can start with as little as you are comfortable investing.