Quote from OldTrader:
This simply draws you to the riskiest FCMs, insuring that whatever money you use for margin is always at maximum risk. LOL.
Why not study the policies/practices and financial statements of the firm(s) you use? For instance, IB keeps excess funds in a securities account, insured by SIPC up to $100K cash. So you can say you're using $10K to margin an ES, but only the minimum margin is used for margin purposes by IB. Overnight this is approximately $4-$5K. If you're holding overnight positions your maximum exposure in a futures account is the minmum overnight margin. But in terms of capital, IB dwarfs most of these firms like Velocity.
If you're day trading only, IB holds your money other than profit and/or loss in an insured securities account, in contrast to these other firms like Velocity.
These were all considerations of mine when I originally opened my IB account..........safety in the event of financial problems. I would not put my capital with a firm where I couldn't invest my funds directly in T-Bills. I also would not choose a firm using $500 margin for ES. These guys are in the crosshairs of huge potential risk, and therefore, huge possible risk to me, though not of my own doing.
OldTrader