Thanks for the reply. The reason I am interested is because I have begun investigating the benefits of selling one future against another. Say Crude oil against propane etc. Since the two are heavily correlated, same $ amounts would work into the positive if entrances were made efficiantly.
Obviously, I need flexibility with $ purchased to enable the % change of the two, three or four futures to be balanced.
From what you have stated, I would likely have this flexibility?
Thanks again.