Since most Prop firms require a series 7, then can a trader, after getting a Series 7, establish discretionary broker relationships with customers and trade those funds? Are there any Prop firms that allow and support this? I have another question. What is the typical overhead range one should expect to pay at a prop firm? It would be nice if someone could breakdown/itemize recurring monthly/annual costs. I know it depends on volume, so I'm asking for a range. Thanks all.