Liquidity
Also known as: market liquidity
Liquidity: Liquidity is how easily a currency pair can be bought or sold without moving its price much. Highly liquid pairs tend to have tighter spreads and less slippage.
What affects liquidity
- The pair: major pairs such as EUR/USD and USD/JPY are traded in very large volumes; exotic pairs much less.
- The time of day: liquidity is usually highest when major financial centres are open, especially during the London–New York overlap — see the forex market hours clock.
- Events and holidays: liquidity can thin out around major news releases, holidays and the weekly open.
Why it matters
When liquidity is high, prices tend to move in small steps, spreads are tight and orders are filled close to the expected price. When it is low, spreads can widen, prices can jump and slippage becomes more likely.
Example
EUR/USD, one of the most traded pairs, is usually highly liquid during the London and New York sessions, so spreads tend to be tight. An exotic pair traded late in the Asian session is less liquid and typically has a much wider spread.
Learn more
- What Is a Spread in Forex? How Spreads Work and What They Cost
The forex spread is the gap between the bid and ask price. Learn how to calculate spread cost, fixed vs variable spreads and why spreads widen.
- What Is Forex? The Foreign Exchange Market Explained
Forex is the global market for exchanging currencies. Learn how it works, who trades it, how big it is and how currency pairs are priced.
Related terms
- Spread
The spread is the difference between the bid (sell) price and the ask (buy) price of a currency pair. It is one of the main trading costs and is usually measured in pips.
- Slippage
Slippage is the difference between the price you expect when placing an order and the price at which it is actually filled. It can work against you (negative slippage) or in your favour (positive slippage).
- Volatility
Volatility is how much and how quickly a currency pair’s price moves over a period. Higher volatility means larger price swings and, for the same position size, greater risk.