Customers cannot lose more than the funds they have on their account. The “Margin Call” feature exists in order to prevent your account from having a negative balance. However, a temporary situation may occur when the balance becomes negative pending the deposit of funds in order to maintain your open position(s), or just prior to your closure of the positions. For more information please read “What is a Margin Call?”
Remember that CFDs are a leveraged product and can result in the loss of your entire capital. Please ensure you fully understand the risks involved.