Retail Prices Index (RPI)

An index published each month by the Office for National Statistics, which measures the level of retail prices in the UK. Cash flows on all index-linked gilts are linked to the RPI.

More terms

Geometric Mean Return

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

Margin call

Learn what a margin call stands for in financial terms.
Read more

Time-Weighted Rate of Return (TWRR)

A return calculated over the time period invested, that excludes extraneous elements, such as deposits to and withdrawals from the investment accounted.
Read more

Beta

Learn what Beta stands for in finance.
Read more

Hypothesis Testing

A mathematical test used to determine whether a claim is true or false.
Read more

UK Treasury bill

A debt instrument issued by the UK government with a maturity of less than one year.
Read more

Forward pricing

Mutual funds are traded on a forward pricing basis, meaning the price you see will be different to the price you may trade at.
Read more

Limit order

Learn what a limit order is and how to use it to make the most of your portfolio.
Read more

Net Income (NI)

The money a firm is left with from sales after subtracting taxes and different business costs.
Read more

You’re just minutes away from commission-free investing

When you invest, your capital is at risk