Dictionary
/
Volatility

Volatility

A measure of how much the prices of an asset or index vary over time.

A measure of how much the prices of an asset or index vary over time.

More terms

Global Investment Performance Standards (GIPS)

A set of standards which investors use to present their investment results.
Read more

Exchange-Traded Fund (ETF)

A collection of investments, pooled into a single fund that can be bought and sold on a stock exchange.
Read more

Equity ETF

An exchange-traded fund that is comprised of a set of stocks.
Read more

Interest Rate

The amount a lender charges for lending your money, or a borrower pays you for borrowing your money.
Read more

Geometric Mean Return

A way of calculating compound returns on an investment or savings over a set period of time.
Read more

Unicorn

A startup valued at over £1 billion. They are rare, hence the name.
Read more

Accrued interest

The interest earned on a gilt since the last dividend date. When buying a gilt, the buyer pays the accrued interest at the time of a transaction to the seller in addition to the clean price of the gilt
Read more

After-hours trading

Trading outside of a stock exchange's opening hours.
Read more

United States Dollar (USD)

The famous greenback our friends in the US use as currency.
Read more

You’re just minutes away from commission-free investing

open an isa
When you invest, your capital is at risk

Freetrade is your gateway to commission-free investing. Join over 1.6 million users using the Best online trading platform, as voted at the British Bank Awards for six years running.

Accounts
Customer Support
Resources
Company
Important information

Freetrade does not provide investment advice and individual investors should make their own decisions or seek professional advice. The value of investments can go down as well as up and you may receive back less than your original investment. Freetrade is a trading name of Freetrade Limited, which is a member firm of the London Stock Exchange and is authorised and regulated by the Financial Conduct Authority. Registered in England and Wales (no. 09797821).

© 2026 Freetrade, All rights reserved. The Apple logo is a trademark of Apple Inc. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

Follow us on