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What is forex?

A practical introduction to the world’s largest financial market, and how currency trading works.

What is forex?

Forex, short for foreign exchange, is the global market where currencies are bought and sold. It is the largest financial market in the world, and it operates around the clock during the trading week as sessions open in Sydney, Tokyo, London and New York.

Every forex trade involves two currencies at once: you buy one and sell the other.

How currency pairs work

Currencies are quoted in pairs, such as EUR/USD. The first currency is the base and the second is the quote. If EUR/USD is 1.0850, one euro costs 1.0850 US dollars.

  • Major pairs include the US dollar and are the most traded.
  • Minor pairs pair major currencies with each other, without the dollar.
  • Exotic pairs combine a major currency with one from a smaller economy.

Pips, lots and leverage

A pip is the standard unit for measuring price changes, usually the fourth decimal place. A lot is the standard trade size, and traders often use smaller fractions of a lot.

Leverage lets you control a larger position with a smaller deposit. It magnifies profits and losses equally, so it must be used carefully.

Spreads and trading costs

Every forex price has a buy price and a sell price. The gap between them is the spread, and it is your main cost. Some accounts also charge a commission, and positions held overnight may incur a swap.

Trading sessions

Forex trades online 24 hours a day, five days a week. Activity and spreads vary through the day, with the busiest periods when major sessions overlap, such as London and New York.

A simple example

You expect the euro to strengthen against the dollar and buy EUR/USD at 1.0850. If the price rises to 1.0900, that is a 50-pip move in your favour. If it falls to 1.0800, it is a 50-pip move against you.

The profit or loss depends on your position size, which is why sizing matters as much as direction.

The risks

Currency prices can move quickly, especially around economic news. Leverage can turn small moves into large losses, and you can lose more than your original deposit on leveraged products. Only trade with money you can afford to lose.

Glossary

  • Bid / Ask: the price to sell and the price to buy.
  • Margin: the deposit required to open a leveraged position.
  • Stop loss: an order that closes a trade at a set loss level.
  • Take profit: an order that closes a trade at a set profit level.
  • Swap: a charge or credit for holding a position overnight.

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Regulatory disclosures

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Entity registry number: 2025-00105 · Registered address: Aurenex Limited, Ground Floor, The Sotheby Building, Rodeny, Village, Rodney Bay, Gros-Islet, Saint Lucia

Risk statement

Trading contracts for difference (CFDs) with Aurenex involves a high level of risk and may not be suitable for all investors. Leverage magnifies both potential profits and losses. Depending on the product and applicable terms, losses may exceed your initial deposit. Make sure you understand the risks and can afford to lose the capital you invest.

When trading CFDs, you do not own the underlying assets or acquire rights to them. Past performance is not a reliable indicator of future results. The information on this website is provided for general information only and does not constitute investment advice, a recommendation or an invitation to engage in investment activity.

This information does not take account of your personal financial circumstances, investment objectives or risk tolerance. Any interaction with this website is undertaken voluntarily and at your own initiative. Website content must not be interpreted as an offer or solicitation to obtain financial products or services where doing so would be unlawful.

To the extent permitted by applicable law, Aurenex Limited is not liable for losses or damages arising from CFD trading activities. Nothing in this statement excludes any liability that cannot lawfully be excluded. Review the legal documents to understand the risks fully and seek independent financial, legal or tax advice where necessary.

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