It will be no surprise to hear the best foreign exchange trading systems are the ones that make money! The difficulty is simply the easiest way to identify which those are, and particularly, the easiest way to decide which system will be the best for an individual trader, i.e.
To proceed, we’ll take at look at http://www.tradingtop100.com/forex/forex-masterplan/. First let’s cross out some systems that never make money for anybody, at least not in the long term. These are the sort of systems that gamblers sometimes call loss recovery systems. They involve varying the risk according to whether the last trade won or lost. The idea is that if your last trade lost, then your next is more likely to win, so you take a bigger position. However this idea is totally wrong. Statistics disprove it each time. Gamblers lose their shirts on these systems and it’d be silly for a currency exchange trader to employ a system like that. So with that rant out of the way, let’s take a look at the simple way to identify a rewarding system. To do that we’re going to introduce the idea of edge. Edge is the measure of a system’s returns over a period. Back testing is a good technique to get those results. Results are calculated after subtracting the spread and any other per trade costs.