The foreign exchange market, commonly known as Forex or FX, is the largest and most liquid financial market in the world. With an average daily trading volume exceeding $7 trillion, it dwarfs every stock market on the planet. Unlike centralized exchanges like the New York Stock Exchange, the Forex market is a decentralized, over-the-counter (OTC) marketplace where currencies are traded 24 hours a day, five days a week. For investors and traders, it represents a world of opportunity, but one that requires a deep understanding of its fundamental mechanics. This article provides a foundational overview of what the Forex market is and how it operates in 2025.
At its core, currency trading is the act of simultaneously buying one currency while selling another. This is why currencies are always quoted in pairs. The most traded currency pair in the world is the EUR/USD, representing the Euro and the U.S. Dollar. The first currency in a pair is the base currency, and the second is the quote currency. When you see a quote for EUR/USD at 1.0850, it means that one Euro is worth 1.0850 U.S. Dollars. A trader who believes the Euro will strengthen against the Dollar would “buy” the EUR/USD pair. Conversely, a trader who believes the Dollar will strengthen would “sell” the EUR/USD pair.
Currency pairs are typically categorized into three groups:
- Major Pairs: These are the eight most traded currencies paired against the U.S. Dollar. They include the EUR/USD, USD/JPY (Japanese Yen), GBP/USD (British Pound), and USD/CHF (Swiss Franc), among others. These pairs are known for their high liquidity and relatively low volatility, making them ideal for new traders.
- Minor Pairs (or Cross-Currency Pairs): These pairs consist of major currencies traded against each other, without involving the U.S. Dollar. Examples include EUR/GBP, EUR/JPY, or AUD/CAD (Australian Dollar vs. Canadian Dollar).
- Exotic Pairs: An exotic pair consists of one major currency paired with the currency of an emerging or smaller economy. Examples include USD/SGD (Singapore Dollar), EUR/TRY (Turkish Lira), or USD/IDR (Indonesian Rupiah). These pairs are characterized by lower liquidity, wider spreads (the cost of a trade), and higher volatility, making them riskier and more suitable for experienced traders.
The market’s 24-hour nature is due to its operation across four major trading sessions that follow the sun around the globe: Sydney, Tokyo, London, and New York. The highest volume and greatest trading opportunities often occur during the overlap of the London and New York sessions. For retail traders, accessing this market is done through a brokerage firm that provides a trading platform. These platforms allow individuals to speculate on the price movements of currency pairs, which are measured in “pips” (percentage in point), the smallest unit of price change. Understanding these foundational concepts is the essential first step before exploring the complex strategies and analyses required to trade successfully.