Hi, just a quick question. What are the margins like with...

Hi, just a quick question. What are the margins like with interactive brokers. On their website it says intraday initial margin and then intraday maintenance margin. For overnight is the same. So for one spi contract how much they ask for margin ?

I tried to call their client services Australian number, but call goes through hongkong who had no clue and she was just reading from the website.