It seems that larger clearing FCMs like Fimat don't cater to serious retail traders directly. However, there're quite a few independent introducing brokers which use big clearing firms like GS, Fimat, Merrill, etc and allow an individual trader to open and maintain accounts with these clearing FCMs. I wonder if any fellow ET member might be able to offer any pointers regarding the pros and cons of opening an account with a large clearing firm through an introducing broker (especially any less apparent risks or downside). The primary concern is fund security and credit risk. It can be assumed that the additional layer of fees/commissions charged by the introducing broker is acceptable. In particular, how important/relevant is the size of an introducing broker's capital, given that the futures account will in fact be opened and maintained with a much larger clearing FCM (and customer funds held in a segregated account arranged by such FCM)? Thanks!