Foreign exchange market
Global decentralized market for trading currencies, largest by volume.
The foreign exchange market (forex, FX, or currency market) is a global decentralized or over-the-counter (OTC) market for the trading of currencies. It determines foreign exchange rates for every currency and, by trading volume, is by far the largest market in the world, followed by the credit market. The market assists international trade and investments by enabling currency conversion, and also supports direct speculation and carry trade speculation based on differential interest rates between two currencies.
- field
- Global decentralized currency trading market
- known_for
- Largest market in the world by trading volume; determines foreign exchange rates
- daily_trading_volume_2025
- US$9.6 trillion per day
- daily_trading_volume_2022
- US$7.5 trillion per day
- most_traded_instrument_2025
- Foreign exchange swaps at US$4 trillion per day
- second_most_traded_instrument_2025
- Spot trading at US$3 trillion per day
Lore & Background
The modern foreign exchange market began forming during the 1970s, following three decades of government restrictions under the Bretton Woods system of monetary management. Countries gradually switched to floating exchange rates from the previous fixed exchange rate regime. The market operates 24 hours a day except weekends, with trading from 22:00 UTC on Sunday (Sydney) until 22:00 UTC Friday (New York). Main participants are larger international banks, and trades between dealers can involve hundreds of millions of dollars, often called the interbank market.
Reader's Guide
The foreign exchange market is unique for its huge trading volume, geographical dispersion, continuous operation, variety of factors affecting exchange rates, low profit margins compared with other markets of fixed income, and use of leverage to enhance profit and loss margins. It has been referred to as the market closest to the ideal of perfect competition, notwithstanding currency intervention by central banks. Historically, currency trading occurred in ancient times, with money-changers in the Holy Land during Biblical times. The Medici family opened banks at foreign locations in the 15th century to exchange currencies for textile merchants. After the Bretton Woods Accord ended in 1971, the Smithsonian Agreement allowed rates to fluctuate by up to ±2%, but this was discontinued in March 1973. Reuters introduced computer monitors in June 1973, replacing telephones and telex for trading quotes.
Did You Know?
- Currency trading and exchange first occurred in ancient times, with money-changers in the Holy Land during the times of the Talmudic writings.
- During the 15th century, the Medici family created the nostro account book to facilitate foreign currency exchange for textile merchants.
Frequently Asked Questions
Who is Foreign exchange market?
The foreign exchange market is a global, decentralized over-the-counter marketplace where participants buy and sell one currency for another. It has no single central exchange; instead, trading happens across a vast network of banks, dealers, and institutions worldwide.
What are Foreign exchange market's powers/role?
It sets the exchange rate for every currency pair and serves as the conversion engine behind international trade and cross-border investment. It also underpins speculative strategies such as carry trades, which exploit interest-rate gaps between two currencies.
How does Foreign exchange market's story end?
It has no finale—the market operates continuously around the clock, every day of the year. As of 2025 it clears roughly US$9.6 trillion in daily volume, and its central role is expected to persist for as long as cross-border commerce exists.
Why is Foreign exchange market important?
It is the single largest financial marketplace on Earth by trading volume, eclipsing even the credit market. Without it, businesses and investors could not convert currencies, making global trade and portfolio diversification effectively impossible.
What is Foreign exchange market's most iconic move (instrument)?
Foreign exchange swaps take the top spot at approximately US$4 trillion per day in 2025, with spot trading close behind at around US$3 trillion per day. Together these two instruments drive the bulk of the market's staggering daily turnover.
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