Although some retail dealers trade exotic (less popular) currencies such as the Thai baht or the Czech koruna, the majority trade the seven most traded currency pairs in the world. The four most popular, also known as "the majors" are:
EUR/USD (euro/dollar) – "euro"
USD/JPY (U.S. dollar/Japanese yen) – "gopher"
GBP/USD (British pound/dollar) - "cable"
USD/CHF (U.S. dollar/Swiss franc) – "swissie"
The three less popular commodity pairs are:
AUD/USD (Australian dollar/U.S. dollar) – "aussie"
USD/CAD (U.S. dollar/Canadian dollar) – "loonie"
NZD/USD (New Zealand dollar/U.S. dollar) – "kiwi"
These currency pairs, along with their various combinations (such as EUR/JPY, GBP/JPY and EUR/GBP) account for more than 95% of all speculative trading in FX. Given the small number of possible trades - only 18 pairs are actively traded - the FX market is much less broad than the stock market. (For more, see Top 8 Most Tradable Currencies and Popular Forex Currencies.)