Forex is the largest financial market in the world. As of March 2005 the average turnover on Forex was 2.9 trillion US dollars per day. This is:
In December 2007, the turnover grew up to 3.3 trillion US dollars a day.
The main online forex trading markets are in Japan, Britain and the US. The US and the UK generate over 50% of the total trading volume in the exchange market. The most active trading takes place during the simultaneous operation of these major markets.