I usually trade the SPDRs and now begining to trade the ES. The equities brokers carry SiPC protection usually for $1 million on your assets. This does not protect market losses but ensures your cash/equities will not be used by the broker for thier own purposes. I did not find any such protection from the few futures brokers I talked to. I am concerned about depositing $50K without any such insurance. Isn't this a valid concern or am I missing something? Thanks!