I have a question about why I have an initial and maintenance numbers on my IB account. Here's what I did 1) Converted 10k EUROS to USD using idealpro. 2) Bought 9k USD worth of ETF in a single transaction. Now my account has 2250 initial margin and maintenance margin. Is this because the currency conversion hasn't settled yet, and I used margin to buy the ETF? If so, how many days does it take to settle for the margin balance to go back to 0?