When you put a deposit into a prop firm, there is no ultimate guarantee that you'll be able to pull it out again..no "SIPC insurance" like in a retail account with Ameritrade or Interactive Brokers. It seems there are few regulations governing prop firms. So it's kind of on good faith when you put a deposit into a prop firm. Because of these realities, the main thing you can do to protect yourself, is to go with a firm that has a solid reputation.
