Currencies are traded worldwide in the major financial centres of London
, New York, Tokyo, Zurich, Frankfurt, Hong Kong, Singapore, Paris and Sydney across almost every time zone. This means that when the trading day in the U.S. ends, the Forex market begins in Tokyo and Hong Kong. As such, the Forex market can be extremely active any time of the day, with price quotes changing constantly. Its a most risky and volatile market in the world.