Stop Loss is an order to close a Transaction in a CFD position at a price determined in advance by you, which in the case of a Buy is lower than the opening transaction price, and in the case of a Sell is higher than the opening transaction price. A Stop Loss order may serve as a risk minimization strategy. However, it cannot be guaranteed since, during abnormal conditions and high volatility, a Stop Loss order may be executed at a worse price.
Once the price reaches this level, the deal closes. Please note that stop losses (or limit orders) at the time of their placement must be set at a certain distance from the current market price.