theoreticaly there should be no margin requirement if long either put or call.
I am with IB. later I found the margin is moving, actually equals to nothing, will not trigger margin call. I bought 87 put and 85 put, when my put is in the money and deeper, the margin goes up, but when my put is out of money (just suppose, I did not see it, my 85/87 is deeper in money after friday's freefall), margin is reduced. I guess if my put goes to zero, the margin may be zero.
what I do not understand is why this kind of margin, does not make any sense.
IB really sucks in this matter, particularly in friday experiation, that is the best time to trade option, they post margin requirements after 2:30PM to stock options, they suppose someone bought and hold till option execution, caused potential margin problem. someone may bought 1000lot aapl...
the last 2hours are the best time to make killing easily, but they forbid this. sucks.
Quote from jys78:
What broker are you using?
For LONG futures options, there should be no "margin" requirement - you pay the purchase price in cash.
For SHORT positions, look at the margin requirements associated with the underlying.