I tried to do a 20 contract vertical spread trade on Wednesday.
The order kept getting bounced saying insufficient margin.

I had enough to do 200 if I wanted.
I tried 3 x, then I checked the description and it read : selling 1 = 10 contracts, so I tried again with 2 thinking well that means I will sell 20 right!
Wrong I sold 2 lol.
It was the end of the day and by the time I called and got through (10 mins later) the market had moved and the day was over.
Of course the following day Thursday they dropped and the trade was not worth it anymore and Friday they expired worthless.
That's .50 X 20 that IB's stupid platform cost me AGAIN.
IB is good for futures but come Monday I'm moving ALL my options trading funds to OptionXpress.
So put that in your pipe and smoke it!!!!!!!!!!
And yes I can give you specifics if you want them are you going to give me $1000 ??????
I'm still waiting 4 weeks for another credit that IB said they where going to send me for their mistake $250.