Posted 8/29/2016 14:16 (#5497333 - in reply to #5497312) Subject: RE: Educate me
If you buy an option there is no margin call anytime. When you sell the call, on the rare chance it's worth more than you paid, you are done.
It's the buyer of your call that can have to pay margin until he/she decides to buy back the call (which usually costs about the same as paying the margin).