Anybody know of a span or eurex rbm margin calculator? I am wondering why my initial margin is increasing when the options I am short have halved in value?
Ok why is saxo margin for FOREX NAKED SHORT options LESS than IB ? saxo also is less than any futures options. is'nt the risk the same..? saxo i beleive has the following NAKED SHORT margin= spot price * 2% * delta * contract size IB ... and futures contract options short margin are crazy in comparison.. any takers ?
There are no free SPAN calculators except for LIFFE (London SPAN) CME asks $500 for PC SPAN that is universal.