Simplicity and robustness - learning from Linda Raschke, Ken Tropin and Curtis Faith

"The minute you think you have found the key to trading, I promise you the markets will change the lock." - Linda Bradford Raschke

It is very easy to think that there is a magic set of parameters which will work best in a chosen market.

The problem is that a certain set of parameters, on a particular timeframe, may work well for a specific period of time, in specific market conditions. But as soon as you dare think "Eureka - this is it!", the markets will change character and those parameters will not work as well.

Stick or twist?

"We have a saying here: "It is incredible how rich you can get by not being perfect." We are not looking for the optimum method; we are looking for the hardiest method. Anyone can sit down and devise a perfect system for the past." - Larry Hite

A trader is always evolving, in terms of his ideas, beliefs and his method. As an example, you often read about how young 'fearless' traders learn to appreciate the importance of risk control - often after blowing up an account or two, or at the minimum having an emotionally demoralising experience associated with a major drawdown. Even some of the Market Wizards went through this.

Occasionally, a trader moves away from their original ideas and beliefs about how to make money. Again, some of the most successful traders have done this.

Trend following, simplicity and robustness

"We have a saying here: "It is incredible how rich you can get by not being perfect." We are not looking for the optimum method; we are looking for the hardiest method. Anyone can sit down and devise a perfect system for the past." - Larry Hite

As a trend follower, it is important to acknowledge and accept that individual stocks making up the 'stock market' are in a constant state of change themselves, be it trending or non-trending, and all with differing levels of volatility, as well as the indices themselves, along with foreign exchange, interest rates, commodities etc.

Simplicity and robustness - with a word from Larry Hite

By their very nature trend following systems or methods are relatively simple pieces of coding. Read about some of the most successful trend followers in history, and they have even themselves referred to the fact that their rules could be written on the back of an envelope or the proverbial cigarette packet.

All you are trying to do is identify whether price is trending up, trending down or is stuck in a range. Once you have determined your timeframe, it is pretty simple to see that, and from there you can create your own parameters and rules.

Trend following, robustness and adapting to market conditions

There is a school of thought amongst some traders which says you need to adapt and adjust your chosen method, in response to changes in the market environment. These might relate to the markets you trade switching from a trending to a non-trending state, or from suffering varying levels of volatility. 

Against this, others will say having to go through this process on a regular basis indicates possible over-optimization and a lack of robustness in your method.

Two Mice and a Maze

Today I came across an old analogy highlighting the dangers of curve fitting your approach too much: 

The case for simplicity and the dangers of trying to improve

"Everything should be made as simple as possible, but not simpler."

The above quote is attributed to Albert Einstein, and it is something I try to adhere to with my own trading. That said, there is a balancing act between keeping things as simple as possible, against striving for improvement which may mean adding complexity to what you are doing.