Turnover Definition. Turnover is a term used in different parts of the world to mean volume or revenue. In the forex world, Turnover is the total money value of all executed transactions in a given time period. The term can also apply to portfolio management, in that it measures how long a fund or investor holds on to the stocks after it is purchased. The longer an investor holds on to a stock and the less trading there is in their account, the lower the turnover will be. The Best Forex Demo Accounts To trade forex you will need a broker to trade with. There are hundreds for aspiring traders to choose from, ranging from highly rated and well regulated ones, such as FXTM, to ones that engage in some questionable practices. It can be hard to know where to start when choosing a broker which is why we have listed our favourite forex brokers below.