I don't understand how the margin (Reg-T) works on IB.
Currently I have in my account $15K for trading
$11K in open positions
$ 4 K in cash
IB says that I have current available funds of $8600(AUD)
and Buying power of $28000(AUD).
does this mean I can have open orders in excess of my actual account balance ( in this case $4K AUD) ?