The foreign exchange, or forex, market is relatively young, having begun in the early 1970s after the United States dropped the gold standard and national currencies started to fluctuate widely. For about 30 years prior to that, most nations had agreed to keep their currency values stable in relation to the U.S. dollar, making a forex market unnecessary. With that no longer the case, banks quickly realized that a profit could be made in “buying” currency when it was devalued and “selling” it after it strengthened, just like any other commodity.
Today, the forex market handles more than $2 trillion in transactions every day, and it runs 24 hours a day, five days a week. (With nations around the world involved, it’s always daytime somewhere.) The most traded currencies are the U.S. dollar, the euro, Japanese yen, British pound, Swiss franc and Australian dollar.
The forex market is overwhelmingly dominated by international banks, government banks, investment banks, corporations, and hedge funds. In fact, individual traders account for only about 2 percent of the market. Nonetheless, a lot of people do try their hand at it, with varying degrees of success.
