What is trading efficiency? Differs with different trading styles Long term Swing Day Trade Scalper If commish costs are $5 and one makes 95 net is that any more efficient than commish of 30 and net of 60? What about the risk taken to achieve the above net profit? For a day trader commish is crucial to obtaining a daily profit. For the long term system trader, there may be no problem in using a "system broker" to manage trades if it means more time windsurfing or golfing. That sound like "efficiency" to me. What does trading efficiency mean to you?