What I'm looking to discuss in this thread is proven methods and advantages which provide traders an edge by trading at an off floor professional firm. The following are what I have identified, but some I can't confirm are only available at a professional firm. Money - The ability to leverage 10-1 or more. Not so much to by huge blocks on a single issue, but to take low risks trades, Spreads, pairs, and have the capitol to increase your size to gain good profits on small movements. Market access - It seems they are truly direct. Does an IB or other remote platforms advise you of a specialists imbalance of orders he has for the next days opening? Becuase you don't go through a broker(ie Datek Direct) you are ie connected to the specialist. Bullets/Conversions- I don't think its possible for non professional traders to use these. This to me has to be at the top of the list as an advantage. "Open Only" orders - Unknown if this is available outside of a professional firm. Being able to put in 100,500, even a thousand orders(computerized if need be) and capture price improvements on previous day imbalances seems to be a huge edge. Need clarification here. Cost - Can be, from what I have seen. Depends on a lot of factors. Although for basic MoMo trading, IB and others are in the same ball park. Information - Not only what may be talked about at a particular office, but what may be going on in other offices. New methods maybe shared( I said maybe) on what is working in the market. Things change, new angles need to identified. Same issue may not be traded, but the methodology can be replicated. Team approach on new methods. Help verify certain set ups quicker. These are the main topics I can think of. Looking for input and additions. Bottom line, is there ultimately a financial edge?