Introduction to financial markets

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What is forex?

4-minute read

The foreign exchange market – also known as forex or FX – is the world’s most traded market.

According to the Bank for International Settlements, global forex trading in 2022 averaged over $7.5 trillion each day. To put that into context, trading on the stock market averages around $553 billion each month.

Which might seem like a lot, but it is just 7% of the total volume seen in FX.

Forex vs Stock Graphic 2023 new

What is forex trading?

Forex trading is the buying and selling of global currencies. It’s how individuals, businesses, central banks and governments pay for goods and services in other economies. Whenever you buy a product in another currency, or exchange cash to go on vacation, you’re trading forex.

However, a significant proportion of forex trades aren’t for practical purposes. Speculative FX traders seek to profit from fluctuations in the exchange rates between currencies, speculating on whether one will go up or down in value compared to another.

How forex trading works

Forex is traded in pairs, meaning that when you trade forex, you are exchanging one currency for another. When buying EUR/USD, for example, you’re buying euros while selling the US dollar.

  • If the euro strengthens against the dollar, your position will increase in value
  • If the euro weakens against the dollar, it will decrease in value

Currency markets never decline in absolute terms – for one currency to go up, there will be others weakening against it. All currencies cannot go up at the same time. There is always going to be a winner and a loser. 

FX traders weigh up whether a currency looks likely to strengthen or weaken against another, then trade that pair accordingly.

Who trades currencies?

Currency markets are crucial to a broad range of participants. Any company that buys or sells overseas, for example, will need to exchange one currency for another as part of their daily operation. Central banks can also be active FX traders, as they seek to keep the currencies they are responsible for under control.

However, global forex trading is dominated by just ten banks, who are responsible for around two-thirds of the world’s volume.

Ground-level shot of the sky in between skyscrapers

The size of the forex market makes it both highly liquid and dynamic. Prices can change rapidly in response to news and short-term events, creating multiple trading opportunities each day. Institutions trade with banks 24 hours a day, attempting to take advantage of these opportunities to earn a profit and hedge against risk.

The rise of leveraged trading in recent decades has also enabled more and more individual retail traders to enter the world of forex. While retail FX traders might not be responsible for as much of the world’s volume, they act in a similar way to trading institutions – identifying when a currency might be in for a significant price move and trading accordingly.

How forex is traded

One key difference between forex and other markets (such as stocks and commodities) is how currencies are bought and sold. Instead of trading via a central exchange such as the New York Stock Exchange or London Stock Exchange, forex prices are determined by interbank trading – the buying and selling of currencies between banks constantly, all over the world.

The currency market is open 24 hours a day during market hours. Almost all providers, including, quote prices without breaks during the week.

Global currencies markets opening hours

Each currency quoted in a pair is written as a three-letter code. Here’s a list of some popular currencies, and their corresponding codes:



US dollar USD
Euro EUR
Japanese yen JPY
British Pound GBP
Canadian dollar CAD
Australian dollar AUD
Swiss franc CHF

Why trade forex?

But being open 24 hours isn’t the only benefit of trading forex. There are two other key reasons why it’s the world’s most popular market:

Going long or short

When investing in stocks, bonds or funds, you can traditionally only speculate on one price direction: up.

Forex trading is a little different. Because you are buying one currency while selling another at the same time, you can speculate on both upward and downward market moves.


With so many trades happening each second, currency prices are always on the move – which brings lots of opportunity for traders.

It also means that there are lots of available buyers and sellers, which keeps supply high and tends to keep trading costs competitive.

We’ll go into how forex trading works in more detail in the How to trade course.

Is forex trading right for me?

Forex trading presents the opportunity to trade a market that is open 24 hours a day, while minimizing trading costs and potentially profiting from markets that are rising or falling. However, it contains significant risks to your money and is not suitable for everyone.

Forex trading may benefit investors who:

  • Are looking for short-term opportunities. FX traders typically hold positions for a few days or weeks, rather than over the long term, with some only seeking to be in the trade for minutes or hours
  • Want to make their own decisions. Most forex brokers provide an execution-only service. That means they do not advise you on what to trade on and do not trade on your behalf
  • Are looking to diversify their portfolio. Trading currencies can be a great way of getting global exposure

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Test your knowledge

Question 1 of 4
What is the currency code for the New Zealand dollar?
  • A NZD
  • B KWI
  • C NZP
Question 2 of 4
When buying GBP/USD, are you…
  • A Buying GBP while selling USD
  • B Buying USD while selling GBP
  • C Buying coconuts while selling USD
Question 3 of 4
HUF is the code for which currency?
  • A Hungarian Forint
  • B Honduran Franc
  • C None of them
Question 4 of 4
ZAR is the code for which currency?
  • A Zimbabwe
  • B South Africa
  • C Zaire
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