If your margin level goes lower than the margin call level and the market continues to move against your position, the broker will close your losing positions. Of course, each account in Aron Broker has different limits. This limit is called the “Stop Out Level”. For example, when the Stop Out Level is set at 50% by the broker, MetaTrader will automatically close your trade when your margin level reaches 50%, and it will start by closing the trade that is in huge loss. 

Usually, closing a losing position raises the margin level above 50%, as this frees up the position’s margin. In other words, the total margin will be lower, and therefore, the margin level will be higher. The system increases the margin level above 50% by closing the most unprofitable position at the beginning. However, if your other positions remain unprofitable and the margin level reaches 50%, the system will also close your other positions.