My broker is ThinkorSwim, and I trade the ES. I have only been trading the ES about 6 months. I use the DOM for making trades. That is, setting buy stops, or sell stops, etc. I really don't know what to make of it outside of that. I notice there are numbers on both sides, i.e., the buy side and the sell side. But I don't quite understand what I am supposed to gleam from them. I have tried to research this, but have not been able to find anything that explains what The DOM is, and how to use it. I'm not even sure what DOM means. Thanks for your ideas.