Notwithstanding the fact that trading foreign exchange on margin carries a high level of risk, the world’s largest market with 24-hour market action is the currency trading market.
There are more than 190 countries in the world with currencies that can be traded, of course, subject to government restrictions. The value of daily foreign exchange trading exceeds the value of annual international trade in goods and services by more than one hundred times.
The cumulative share in daily currency trading of the top ten currencies is about 180 percent and the rest of the currencies in the world have a share of 20 percent. (Since two currencies are involved in each transaction, the sum of the percentage shares of individual currencies totals 200% instead of 100%.)
As per reports of The Bank for International Settlements, which is an international organization of central banks, these are the top ten traded currencies of the world in 2013.