Why are many Hit Rate Trading Systems Losing Systems? David Paul, Financial Trader and Managing Director of VectorVest UK comments. If you found value in watching this video, PLEASE LIKE AND SHARE so we can do more! There is a forex robot and it gets it right 99% of the times; when its right it makes 2 ticks, when its wrong it loses 500 ticks. That's why most of these trading systems get it wrong. Most winning systems are only right 55% of the time or less.