ETF stands for exchange-traded fund

An ETF is a fund that holds a collection of investments — usually stocks, bonds, or a mix of both — and trades on a stock exchange like the New York Stock Exchange or NASDAQ, the same way individual company shares do. You buy and sell ETF shares through a brokerage account at whatever price they're trading for that moment, not at a fixed price set once per day.

The key difference from a mutual fund is timing and price. A mutual fund's price is calculated once at the end of each trading day; an ETF's price changes throughout the day as people buy and sell. That makes ETFs faster to trade in and out of, though it also means the price you pay depends on when you place your order.

Most ETFs are passive, meaning they track an index — a pre-set list of investments like the S&P 500 or the Nasdaq-100. The fund manager simply buys the same stocks in the same proportions as the index, so your returns match the index's performance minus a small fee. Some ETFs are active, meaning a manager picks individual investments to try to beat the market, but these are less common and usually charge higher fees.

Key Takeaways

  • ETF stands for exchange-traded fund, and it is a basket of investments you can buy and sell like a stock during trading hours.
  • Most ETFs track an index such as the S&P 500, so you own a small piece of many companies with a single purchase.
  • ETF prices change throughout the day as people trade them, unlike mutual funds which price once per day.
  • ETFs typically charge lower fees than actively managed mutual funds because most simply follow an index rather than trying to beat it.

How ETFs differ from mutual funds

Both ETFs and mutual funds let you own a diversified mix of investments without picking individual stocks yourself. The main differences are when and how you trade them, and how much they cost.

With a mutual fund, you place an order at any time during the day, but the trade executes at the closing price — the single price set at 4 p.m. Eastern Time when the market closes. With an ETF, you trade during market hours (9:30 a.m. to 4 p.m. Eastern) and your price updates in real time, just like buying a stock. If you want to sell quickly or buy at a specific price, an ETF gives you that control. A mutual fund makes you wait until the next day's close.

Mutual funds also tend to charge higher annual fees, especially if they are actively managed. Many ETFs charge 0.03% to 0.20% per year because they simply track an index. A comparable actively managed mutual fund might charge 0.50% to 1.50% or more. Over decades, that difference compounds significantly.

What you own when you buy an ETF

When you buy one share of an S&P 500 ETF, you own a tiny piece of all 500 companies in that index — Apple, Microsoft, Coca-Cola, and hundreds of others. The ETF holds the actual stocks, and you own a proportional slice of the fund.

Some ETFs hold bonds instead of stocks, or a mix of both. Others focus on a specific sector like technology or healthcare, or a specific country or region. Some track commodities like gold or oil. The fund's name usually tells you what it holds — an ETF called "Vanguard Total Stock Market" holds stocks across the entire U.S. market, while one called "iShares MSCI Emerging Markets" holds stocks in developing countries.

You receive dividends and interest from the investments the ETF holds, usually paid out quarterly or annually. You also pay capital gains tax if the ETF sells holdings at a profit, though most ETFs are structured to minimize this tax burden compared to mutual funds.

Why people use ETFs instead of picking individual stocks

Buying individual stocks means researching companies, watching earnings reports, and deciding when to buy and sell. Most people who try this underperform the market over time. An ETF removes that burden — you own hundreds or thousands of companies with one purchase, so a single company's failure doesn't sink your investment.

ETFs also let you diversify with small amounts of money. You might need thousands of dollars to build a balanced portfolio of individual stocks, but you can buy one ETF share for the price of that single share, which might be $50 to $300 depending on the fund.

The low fees also matter over time. If you invest $10,000 and earn 7% per year, a 0.10% fee costs you $10 that year. A 1% fee costs you $100. Over 30 years, that difference can mean tens of thousands of dollars in lost growth.

Common types of ETFs and what they track

Index ETFs track a specific market index. The S&P 500 ETF tracks the 500 largest U.S. companies. A total stock market ETF tracks thousands of U.S. companies of all sizes. A bond ETF tracks government or corporate bonds. These are the most common and usually have the lowest fees.

Sector ETFs focus on one industry — technology, healthcare, energy, financials. They let you bet on a specific part of the economy without picking individual companies.

International ETFs hold stocks or bonds from other countries. Emerging market ETFs focus on faster-growing developing economies. Commodity ETFs track gold, oil, or agricultural products.

Specialty ETFs exist for almost any investment theme — dividend-paying stocks, small-cap stocks, real estate investment trusts (REITs), or even inverse ETFs that profit when the market falls. The more specialized the ETF, the higher the fee usually is, because the fund manager has to do more work to maintain it.

How to buy and sell ETFs

You need a brokerage account to buy ETFs — an account with a company like Fidelity, Charles Schwab, Vanguard, or E-Trade. You fund the account with money, search for the ETF by its ticker symbol (a short code like SPY or VOO), and place a buy order just like you would for a stock. The order executes during market hours at whatever price the ETF is trading for at that moment.

When you want to sell, you place a sell order the same way. The money lands in your brokerage account within a few days, and you can withdraw it to your bank account or reinvest it in other ETFs or stocks.

Most brokerages charge no commission to buy or sell ETFs, though some may charge a small fee for certain funds. Always check the fund's prospectus — the official document describing what it holds and what it costs — before you buy.

Fees and costs to watch

The main cost of owning an ETF is the expense ratio, the annual percentage fee charged to hold the fund. A 0.10% expense ratio on a $10,000 investment costs $10 per year. This fee is deducted automatically from the fund's value, so you don't write a check — it just reduces your returns slightly each year.

Some ETFs also charge a bid-ask spread, the difference between the price you pay to buy and the price you receive to sell. For popular ETFs with lots of trading volume, this spread is tiny — a few cents. For less popular ETFs, it can be larger, so you lose a bit more when you buy and sell.

If you buy an ETF through a financial advisor rather than directly through a brokerage, you may also pay an advisory fee or commission. Buying directly through a brokerage avoids this extra cost.

Frequently Asked Questions

Is an ETF the same as a stock?

No. A stock is a share of ownership in one company. An ETF is a fund that holds many investments — usually dozens or hundreds of stocks, bonds, or both. You buy and sell ETFs the same way you buy stocks, but you own a basket of investments rather than a single company.

Can I lose money in an ETF?

Yes. If the investments inside the ETF fall in value, your ETF share price falls too. An S&P 500 ETF can drop 20% or 30% in a bad market year. Over long periods, stock market ETFs have historically recovered and grown, but there is no may provide.

Do I pay taxes on ETF dividends?

Yes. Dividends paid by an ETF are taxable income in the year you receive them, whether you reinvest them or take them as cash. You will receive a tax form (1099-DIV) showing how much you earned. Capital gains taxes apply if you sell an ETF share for more than you paid for it.

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

An index fund is a mutual fund or ETF that tracks an index. So all index funds are either mutual funds or ETFs, but not all ETFs are index funds — some are actively managed. The key difference is that index funds (whether mutual or ETF) simply follow a pre-set list, while actively managed funds try to beat the market.

How much money do I need to start buying ETFs?

Most brokerages have no minimum investment. You can buy a single share of an ETF for whatever that share costs — typically $50 to $300 per share depending on the fund. Some brokerages also offer fractional shares, letting you invest any dollar amount, even $1.