If you've been researching Forex trading, you might have seen the term 'Forex CFDs' at some point. There are two ways to trade Forex: using CFDs or spot Forex (also known as margin). Spot Forex involves buying and selling the actual currency. For example, you might purchase a certain amount of Pound Sterling for Euros, and then, once the value of the Pound increases, you may then exchange your Euros for Pounds again, receiving more money back compared with what you originally spent on the purchase.
The purpose of this method is to make sure no single trade or single day of trading hurts has a significant impact on the account. Therefore, a trader knows that they will not lose more in a single trade or day than they can make back on another by adopting a risk maximum that is equivalent to the average daily gain over a 30 day period. (To understand the risks involved in forex, see "Forex Leverage: A Double-Edged Sword.")
One unique aspect of this international market is that there is no central marketplace for foreign exchange. Rather, currency trading is conducted electronically over-the-counter (OTC), which means that all transactions occur via computer networks between traders around the world, rather than on one centralized exchange. The market is open 24 hours a day, five and a half days a week, and currencies are traded worldwide in the major financial centers 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 anew in Tokyo and Hong Kong. As such, the forex market can be extremely active any time of the day, with price quotes changing constantly.