The Forex market, also known as the foreign exchange market or FX, is the market in which currencies are traded. This financial market is the largest and most liquid in the world. Trading is open 24 hours a day, five days a week. To demonstrate the enormity of its volume, the New York Stock Exchange handles approximately $169 billion worth of transactions a day, while the Forex market sees over $5 trillion worth of transactions a day!
HIGH RISK WARNING: Foreign exchange trading carries a high level of risk that may not be suitable for all investors. Leverage creates additional risk and loss exposure. Before you decide to trade foreign exchange, carefully consider your investment objectives, experience level, and risk tolerance. You could lose some or all of your initial investment; do not invest money that you cannot afford to lose. Educate yourself on the risks associated with foreign exchange trading, and seek advice from an independent financial or tax advisor if you have any questions.
The need to exchange currencies is the primary reason why the forex market is the largest, most liquid financial market in the world. It dwarfs other markets in size, even the stock market, with an average traded value of around U.S. $2,000 billion per day. (The total volume changes all the time, but as of August 2012, the Bank for International Settlements (BIS) reported that the forex market traded in excess of U.S. $4.9 trillion per day.)