The council draws expertise from banks, stock companies, a foreign exchange margin trading company, an audit firm, two law firms, and over 15 technology companies. (the-blockchain.com)
Anytime money crosses a border, a foreign exchange margin of «up to 4 percent» is added to the transaction's value. (entrepreneur.com)
This is to attempt to partially protect IB and its customers from those accounts that have very risky positions that currently satisfy exchange margin requirements, but nonetheless could suffer excessive losses in the event of a significant market move (for example, accounts with high exposure to short option positions). (interactivebrokers.com)