Every forex trader has wondered about how to measure the success of the trading system they use. In this article, we will discuss seven important parameters proposed by trading system expert David Jenyns. Jenyns, who has worked at top brokerage firm Ord Minnett and has a reputation as a profitable trading system creator, provides valuable insights regarding trading system evaluation. Here are the seven key parameters you need to know:
1. Win-to-Loss Ratio (Win Rate)
- The Win-to-Loss Ratio, or Win Rate, is the ratio between the average number of winning trades compared to losing trades. Although often considered an indicator of success, the Win-to-Loss Ratio needs to be interpreted carefully. The quality of trading is also influenced by how big the wins are versus the losses.
- In addition to the Win-to-Loss Ratio, you need to ensure that the average number of pips or dollars when winning is greater than the average loss. This data provides a more comprehensive overview of the trading system's performance over a certain period.
- Expectancy is a key statistic in measuring the success of a trading system. The formula is (% Win x Average Win Size) - (% Loss x Average Loss Size). Expectancy indicates how many dollars of return are expected from every dollar at risk in the trading system.
- Knowing how many consecutive losses your trading system may experience provides confidence and helps measure system success, especially when facing a series of losses.
- Maximum Drawdown describes the worst period in the trading system's performance. It is important to assess whether you are comfortable with the magnitude of the potential drawdown.
- This statistic is rarely discussed but important. The trading system should provide signals in a realistic number, not too many or too few, to be effectively executed.
- Profitability or Return on Investment (ROI) in one year is the most important parameter. While the ultimate goal of trading is profit, it needs to be balanced with other parameters for an overall picture.
Combining these six parameters can help you measure the success of your trading system more holistically. Remember that the balance between risk and reward is also crucial in selecting and evaluating your trading system.