Whatever your opinions are about the concept of back-testing, there are few better ways to build a trading system than through the back-testing of historical data.

Back-testing allows us to answer critical questions like ‘how many positions should I hold in a portfolio?’, ‘how much risk should I take?’ or ‘how effective was this strategy in the past?’ Read more »


Trading systems are not only good for making money in financial markets but they are also extremely useful for learning. Unfortunately, trading systems often get discarded early on after a couple of poor back-test results.

Sometimes it is better to improve an existing model that needs work than to start afresh with a totally new system. In this article I look at 21 ways you might be able to improve on your existing trading system: Read more »