Investing term

What is ETF?

Exchange-Traded Fund — a basket of many stocks (or bonds) bundled into a single share that trades on an exchange like a regular stock.

An ETF (exchange-traded fund) is a single fund that holds a basket of many investments — often hundreds of stocks or bonds — but trades on an exchange like one ordinary share. Buy one share of a total-market ETF and you instantly own a tiny slice of every company in it, which is why ETFs are one of the cheapest ways to get instant diversification.

The "exchange-traded" part matters: unlike a traditional mutual fund that only settles once a day after the market closes, an ETF's price updates live throughout the trading day and you can buy or sell it anytime the market is open. The most popular ETFs are "index" ETFs that simply track a benchmark, which keeps their annual fee (the expense ratio) very low.

A basket that trades like a stock
$100$101$102openmiddaycloselive priceone share = a whole basket, traded like a stockAn ETF's price updates all day, so you can buy or sell any time the market is open.

An ETF holds a whole basket of investments but trades on an exchange at a live price all day — unlike a mutual fund, priced once at the close. One share, instant diversification.

For example

One share of an S&P 500 ETF gives you a position in all 500 companies at once — for an annual fee often under 0.1%, or about $1 a year per $1,000 invested.

Learn it by doing

That's ETF in theory — it clicks when you use it. Practise it hands-on in a free, interactive lesson (Stage 6, Index Funds, ETFs & Mutual Funds).

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Why it matters to you

ETFs matter because they made broad, cheap diversification available to anyone with a brokerage account and the price of a single share. They combine the diversification of a fund with the flexibility of a stock — live pricing, easy trading, and typically very low fees for index versions. For most investors, a couple of broad, low-cost index ETFs are all the building blocks a sound portfolio needs.

⚠ Assuming every ETF is cheap and broad

The ETF wrapper is popular, so it now houses thousands of products — including narrow, themed, leveraged, and actively managed ones with high fees and concentrated risk. 'ETF' describes the structure, not the strategy. Check what an ETF actually holds and what it charges; the cheap, diversified index ETFs are only a subset of the label.

Frequently asked questions

What is an ETF?

An ETF, or exchange-traded fund, is a fund holding a basket of investments — often hundreds of stocks or bonds — that trades on an exchange like a single share. Buying one share gives you instant diversification across all its holdings, usually for a very low annual fee if it tracks an index.

What's the difference between an ETF and a mutual fund?

Both are pooled funds, but an ETF trades on an exchange all day at a live price, while a mutual fund is priced once a day after the close and bought directly from the fund company. ETFs are often cheaper and more tax-efficient, while mutual funds can be simpler for automatic investing.

Are ETFs a good investment for beginners?

Broad, low-cost index ETFs are widely recommended as a simple, diversified core holding. They spread risk across hundreds or thousands of companies for a tiny fee. Just be aware that many ETFs are narrow, themed, or expensive, so check what any specific ETF holds and charges before buying.

Read the full guide

AnalysisThe 7 Most Popular ETFs, Compared (VOO, VTI, SPY, QQQ & More)VOO, VTI, SPY, QQQ, SCHD, VXUS and BND — the seven ETFs most investors own. What each tracks, its fee, its risk, and the job it does.10 min readAnalysisTypes of ETFs, Explained: What's Inside Them and How Risky They AreNot all ETFs are alike. The main types of ETF — what each holds, its risk, the returns to expect, and which belong in a long-term portfolio.9 min readInvesting basicsWhat Is the S&P 500? (And How to Actually Invest in It)The S&P 500 is roughly the 500 biggest US companies bundled into one number. Why a few giants run the show, and how people actually buy it.5 min read

Related terms

Active fundA fund whose manager picks stocks in the hope of beating a benchmark.BenchmarkThe reference index a fund compares itself to — e.g. the S&P 500, MSCI World, or Bloomberg Aggregate.Creation/redemptionThe mechanism that keeps ETF prices close to NAV. Authorized participants swap baskets of underlying stocks for ETF shares (or vice versa).DistributionThe income a fund pays out to its shareholders — dividends from stocks held, plus realized capital gains.
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