CFDs are a leverage product and can involve a significant risk of loss. Trading CFDs may not be suitable for all, therefore you should ensure that you understand the risks involved and take into account your individual circumstances.
Trader's Glossary

What is Simple Moving Average (SMA)?

Simple moving averages represent an asset’s average price over a given period of time. They are calculated by adding the closing price for a certain number of periods and then dividing the result by the number of periods used.