Don, are your traders protected under sipc? as for a deposit,5k is more than enough for a prop given the risk of them going under. 20-1 with 5k is plenty for me as a trader. as for an owner of a prop,you can limit the number od shares a trader can buy. also,a good prop can tell after 2 weeks what kind of trader they have. i know guys who have barely 1k in their accounts and they have 100k buying power;they have been with the firm for 2 years and have a great track record. a firm demanding 20k is not realistic in my book as a retail account with 25k will give you 4-1 with sipc and no games. contrary to what anyone says,you can make a damn good living with 100k buying power if you are a good trader. i had 250k and the most i ever used at one times was 80k.