FOREX is an international foreign exchange market, where money is sold and bought freely. In its present condition FOREX was launched in the 1970s, when free exchange rates were introduced, and only the participants of the market determine the price of one currency against the other proceeding from supply and demand.
As far as the freedom from any external control and free competition are concerned, FOREX is a perfect market. It is also the biggest liquid financial market. According to various assessments, money masses in the market constitute from 1 to 1.5 trillion US dollars a day. (It is impossible to determine an absolutely exact number because trading is not centralized on an exchange.) Transactions are conducted all over the world via telecommunications 24 hours a day from 00:00 GMT on Monday to 10:00 pm GMT on Friday. Practically in every time zone (that is, in Frankfurt-on-Main, London, New York, Tokyo, Hong Kong, etc.) there are dealers who will quote currencies.
FOREX is a more objective market, because if some of its participants would like to change prices, for some manipulative purpose, they would have to operate with tens of billions dollars. That is why any influence by a single participants in the market is practically out of the question. The superior liquidity allows the traders to open and/or close positions within a few seconds. The time of keeping a position is arbitrary and has no limits: from several seconds to many years. It depends only on your trading strategies. Although the daily fluctuations of currencies are rather insignificant, you may use the credit lines, that are accessible even to currency speculators with small capitals ($ 1,000 - 5,000), where the profit may be impressive.
The idea of marginal trading stems from the fact that in FOREX speculative interests can be satisfied without a real money supply. This decreases overhead expenses for transferring money and gives an opportunity to open positions with a small account in US dollars, buying and selling a lot of other currencies. That is, on can conduct transactions very quickly, getting a big profit, when the exchange rates go up or down. Many speculative transactions in the international financial markets are made on the principles of marginal trading.
Some of the participants in this market are simply seeking to exchange a foreign currency for their own, like multinational corporations which must pay wages and other expenses in different nations than they sell products in. However, a large part of the market is made up of currency traders, who speculate on movements in exchange rates, much like others would speculate on movements of stock prices. Currency traders try to take advantage of even small fluctuations in exchange rates.
In the foreign exchange market there is little or no 'inside information'. Exchange rate fluctuations are usually caused by actual monetary flows as well as anticipations on global macroeconomic conditions. Significant news is released publicly so, at least in theory, everyone in the world receives the same news at the same time.
Currencies are traded against one another. Each pair of currencies thus constitutes an individual product and is traditionally noted XXX/YYY, where YYY is the ISO 4217 international three-letter code of the currency into which the price of one unit of XXX currency is expressed. For instance, EUR/USD is the price of the euro expressed in US dollars, as in 1 euro = 1.2045 dollar.
Unlike stocks and futures exchange, foreign exchange is indeed an interbank, over-the-counter (OTC) market which means there is no single universal exchange for specific currency pair. The foreign exchange market operates 24 hours per day throughout the week between individuals with forex brokers, brokers with banks, and banks with banks. If the European session is ended the Asian session or US session will start, so all world currencies can be continually in trade. Traders can react to news when it breaks, rather than waiting for the market to open, as is the case with most other markets.