What Is a Market Order?

A market order is an instruction to buy or sell at the best available market price.

It is commonly used when a trader prioritises execution over obtaining one exact price.

Suppose EUR/USD is quoted at:

Bid: 1.1500

Ask: 1.1502

If you submit a market buy order, the system will attempt to execute your trade at the best available ask price.

If you submit a market sell order, execution will generally occur around the best available bid price.

However, prices can change between the moment an order is submitted and the moment it is executed.

Therefore, the final execution price is not necessarily guaranteed to match the price originally displayed.

A trader might use a market order when:

Immediate execution is more important than a specific entry price
The market is moving quickly
The trader wants to enter or exit a position without waiting for another price level

Gold is trading around:

Bid: $3,000.00

Ask: $3,000.30

You decide to buy immediately.

You submit a market buy order.

The system searches for the best available selling price and executes the order according to available liquidity.

If the market moves during this process, your execution price may differ slightly from $3,000.30.

The main advantage is speed and likelihood of execution when sufficient liquidity is available.

The main limitation is price uncertainty.

During volatile or illiquid market conditions, the difference between the expected price and actual execution price can be larger.