Weekly loss limit is calculated on net P&L starting at the beginning of the week (Sunday, 5PM CT). It will include all fees and commissions as well as realized and open P&L. This value is monitored in real-time. When your Weekly Loss reaches the amount entered, your working orders will be canceled and your positions will be liquidated. Your account will be unable to place trades unless this value is increased or disabled.
To enable the Weekly Loss Limit feature, navigate to Application Settings.
Choose the Accounts tab and click on the Risk Settings button.
This will open a detail section including your Weekly Loss Limit. Activate the toggle next to Weekly Loss Limit and enter a value.