What is an ETF? A plain-English introduction

The short answer

An exchange-traded fund (ETF) is an investment fund with units that can generally be bought or sold on a stock exchange during market hours. Depending on its strategy, a fund might hold shares, bonds, cash-like assets or other investments.

Some ETFs aim to track an index, while others are actively managed. The label “ETF” describes how the fund trades, not whether it is simple, low risk or suitable for any particular person.

What happens when you buy

Rather than buying every underlying security separately, a person can buy units in the fund. The fund’s rules and disclosure documents explain what it seeks to hold and how its assets are managed.

The market price of a unit can move during trading. It can also differ from the value of the underlying assets because of supply, demand and trading conditions.

Costs to understand

Common considerations include the fund’s management fees and costs, brokerage or transaction fees, bid-ask spread, and possible currency-conversion costs. Smaller fees can compound over long periods, but fees alone never describe the full risk or value of an investment.

Read beyond the ticker

Look at the investment objective, underlying holdings, structure, risks, distribution policy and relevant Product Disclosure Statement (PDS). Particular care is needed with leveraged, inverse, complex or narrowly concentrated products.

No ETF is automatically safe because it appears in an article or has a familiar brand name.

ETF or managed fund: what is the difference?

A traditional unlisted managed fund generally allows investors to transact directly with a fund operator at a calculated unit price, subject to the product terms. ETF units generally trade on an exchange, where market prices change during the session. Either type can use an index-tracking or active investment approach.

Tax handling, distributions, minimum investments, transaction costs and access can differ by product and platform. The structure matters, but a shared label cannot tell you which fund is appropriate for a person.

A beginner’s document checklist

• What investment objective is stated?
• What index or active process determines holdings?
• How diversified are the underlying assets?
• What fees and transaction costs are disclosed?
• What are the specific liquidity and investment risks?
• Are there leverage or derivatives features to understand?

Start with the fund issuer’s current documentation and independently verify claims. Websites that summarise funds can be useful, but their summaries should not replace the issuer's primary documents.