A trading system is a set of rules that allow to be defined in an objective way and that can be simulated by historical data to see the behavior that they would have had over time. If the entire process of calculation, delivery and execution of orders is done automatically, we have an automatic trading system.
The difference with the discretionary Trading system is that the investor makes decisions that could not be analyzed historically. In addition, with the automatic systems the ‘human’ component is eliminated.
In our case we use as a broker, ibroker or tradingmotion, for it is as easy as accessing the tradingmotion website http://www.tradingmotion.com and create an account.