Ok, as there is a lack of Info about trading costs on this site, and some "strange" stuff I found on a couple of brokers, I would like to write a post about the trading costs (fees) involved on Prop Trading: As far as I know the fees are: 1. Broker commission (depends on volume and style) - From 0.000 to 3$/share or per trade basis, in some situation monthly or even yearly. 2. ECN fee - Depends on routing strategy, touched markets/books, liq. tag, etc. all the info can be found on ECN sites. EDGA fee schedule EDGX fee schedule NYSE fee schedule NYSE ARCA fee schedule BATSZ/Y fee schedule NASDAQ/BX/PH fee schedule CBSX fee schedule 3. SEC fee - Like 22.4$ per M$ traded. Only applies to sell/short side SEC fees 4. Trading activity fee (TAF) - $0.000095 per share. Only applies to sell/short side FINRA 5. NSCC clearing fee - Any idea how this is calculated? NSCC schedule Those are all right?