What Is Forex Trading?

The market in one paragraph

Foreign exchange, usually shortened to forex or FX, is the global network through which currencies are exchanged. Unlike a stock exchange, it has no single physical venue. It is a decentralised, over-the-counter market made up of banks, institutional dealers, corporations hedging cross-border revenue, central banks managing reserves, and — at the far end of the chain — retail participants accessing prices through intermediaries and online platforms.

Because participants sit in every time zone, the market operates continuously from Sunday evening to Friday evening, moving between the Sydney, Tokyo, London and New York sessions. That continuity is one reason forex is often the first market a new trader encounters.

How currency pairs work

Prices are always quoted in pairs. In EUR/USD, the first currency is the base and the second is the quote. A price of 1.0850 means one euro is worth 1.0850 US dollars. Buying the pair means buying the base and selling the quote; selling the pair does the reverse.

Majors, minors and exotics

• Majors pair the US dollar with other large economies — EUR/USD, USD/JPY, GBP/USD, USD/CHF. These typically carry the tightest spreads and deepest liquidity.
• Minors (or crosses) exclude the dollar — EUR/GBP, AUD/JPY. Liquidity is thinner and spreads are usually wider.
• Exotics pair a major currency with a smaller or emerging-market currency. Spreads widen considerably and price gaps are more common.

Pips, lots and position size

A pip is the standard incremental price move, usually the fourth decimal place (0.0001) for most pairs and the second decimal for yen pairs. Position size is expressed in lots: a standard lot is 100,000 units of the base currency, a mini lot 10,000, and a micro lot 1,000. The combination of pip value and lot size determines what a one-pip move is worth in money — which is precisely the arithmetic that governs risk.

What actually moves currency prices

Currencies are relative claims on economies, so their prices respond to the forces that make one economy more or less attractive to hold capital in.

• Interest rate expectations. Markets price central bank policy paths continuously; the surprise relative to expectation matters more than the level.
• Inflation data. Inflation prints reshape rate expectations, which is why CPI releases often produce the largest intraday moves.
• Growth and employment data. Labour market strength feeds directly into policy assumptions.
• Trade and capital flows. Persistent surpluses or deficits create structural demand for currencies.
• Risk sentiment. In stressed conditions capital rotates toward currencies perceived as safe havens, regardless of local data.

Leverage: the defining feature and the defining risk

Retail forex is almost always leveraged. Leverage lets a trader control a notional position much larger than the deposited amount, which is why small percentage moves produce large percentage account changes. The mathematics are symmetrical: at 20× leverage, a 1% adverse move in the underlying equals a 20% change in the committed amount. Margin rules then add a hard edge — if account equity falls below a threshold, positions can be closed automatically, sometimes at the worst possible moment.

How forex reaches a retail screen

Between the interbank market and a retail order ticket sit several layers: liquidity providers streaming prices, an intermediary aggregating those prices, a risk engine applying margin rules, and finally the interface. Each layer influences the price and the speed a user experiences. Understanding this chain is why we recommend reading how trading platforms work alongside any market guide.

A realistic study path for beginners

1. Learn to read a quote, a spread and a pip value until the arithmetic is automatic.
2. Study one or two major pairs rather than scanning dozens.
3. Build a written risk framework before opening any position, demo or otherwise.
4. Keep a journal recording the reason for entry, the planned exit, and the outcome.
5. Review the journal monthly for behavioural patterns, not just profit and loss.

Progress in forex is measured in process consistency long before it is measurable in returns. Traders who skip the mechanics tend to relearn them at a much higher cost later. If you are continuing, the natural next read is technical analysis basics.