Yes, what Khanh said is correct. There are not many CFD online brokers with negative balance protection, but Plus500 is one of the few. This does mean you cannot lose more money than you deposit. Once you equity goes to 0, your position is indeed automatically closed and if this happens, this is called ´Margin call´.

If you have any other questions, please feel free to reply again 🙂

Btw, Google “negative balance protection” for more info regarding this.