EN 
DE What is a margin call?
The margin call describes the warning that a trader receives when the amount of money in the account or the margin has fallen below the minimum amount required to keep the position(s) open. Put simply, it means the trader has to spend more money to keep the positions open or positions will be closed. This restores the required holding margin. This is also referred to as the so-called stop-out. If the stop-out level is kept below 100%, the stop-out can usually be prevented.