Forex trading has many interesting concepts, including slippage. This phenomenon results when a trader’s order is executed at a price different from the requested price. This tends to happen when markets remain highly volatile or when a sell order can’t fetch the desired price within the timeframe. Understandably, slippage is seen as negative in forex trading as your order goes through at a price lower than desired. It is known as negative slippage. However, this can also spell good things for you when your forex traders are going to be filled by a bank or liquidity provider. Because they usually fill at the best available price. This is known as positive slippage.