Margin calculator

J

just21

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.
 
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