I'm with MBTrading and the money that is leftover on your balance(that you don't have a position on) is not insured by FDIC so I'm wondering how to earn interest and be insured at the same time. I don't want to buy treasuries and liquidate before maturity since that would be highly speculative. I just want to have some kind of income when I decide to take a vacation, is there a mutual fund or instrument that would make this possible? Does IB works differently?