IBKR routinely reviews margin levels and will implement changes which serve to increase requirements above statutory minimums as market conditions warrant. To assist clients with understanding the effects of such changes on their portfolio, IBKR offers a feature referred to as the "Alternative Margin Calculator" that is available within the Risk Navigator application.
For information on how to use the Alternative Margin Calculator, please visit the IBKR Knowledge Base or watch the video.
You can also find more information about the Risk Navigator in our IBKR Short Videos.