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.

On defining a trend, interpreting volatility and when to go fishing

Jesse Livermore aboard the Anita Venetian

"Your definition of trend is the smoothing method you use. The methods you use to define trend are entirely up to you, so you get to define trend any way you wish; everyone may have a different idea of "the" trend." - Ed Seykota.

Some words of wisdom from David Druz

David Druz is a long-time trend follower who was the first mentee of Ed Seykota. He has run Tactical Investment Management since the early 1980's. Here are some of his nuggets of wisdom:

Current market volatility and staying the course

In the last couple of weeks we have seen an ever-increasing level of volatility within the context of a sharp drop in price in the major market averages.

We have also started to see intervention in the markets by governments and regulators - additional liquidity being provided and interest rate cuts, as well as market trading halts (up and down) being triggered and the introduction of short selling bans on certain stocks.

How do you define a trend?

The past has happened. The future doesn't exist.

Therefore, we can only react and respond to what is happening in the moment of now.

So, for traders the question is, what is price doing now?

The tricky bit is how you define "what is price doing now".

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.

Some thoughts on defining market states

When people talk about the four market states, typically they refer to these as trending, non-trending, stable (low volatility) and volatile.

However, what you need to consider is there is no definitive answer to how you identify each state, and the answer may differ from trader to trader.

Trading the line of least resistance

A lot of the people who were profitable in 2008 became unstuck the following year. They seemed to get in their head that, once the markets started rallying, they were anticipating a further, more pronounced price drop.

In the summer of 2009, they got their chance. There were numerous trading blogs of the day talking about a 'head and shoulders' pattern which had formed on the indices between May and June, and they were going to use this as a trigger to go short the market, and really make a killing.

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.

Developing your level of competence - which step are you on?

In trading, as in any walk of life, it takes plenty of experience to evolve from being unconsciously incompetent to unconsciously competent in what you are doing.

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.

Jesse Livermore, the Dow and the changing market state

Below we have the current daily chart of the Dow. This is a classic example of a 'tale of two market states'. Up to the beginning of February, we can see a stable (low volatility), trending state. And from the beginning of February to date, a volatile, non-trending state. This is highlighted by the rise in the readings of the volatility factor indicator and the 2ATR measurement.

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.

Volatility issues

Below I have shown a chart of the Dow which highlights the split personality of the markets in recent times.

Up until the end of January, we can see the market clearly in a trending, stable (i.e. low volatility) state. From there, the chart is a mess, and the Volatility Factor and 2ATR measurements clearly show the explosion in volatility.

Some thoughts on varying your position size

In my own trading, I use fixed fractional position sizing - that is, while the monetary value of risk per trade varies as my equity goes up or down, I risk the same amount in percentage terms.

A while back, a good trader friend of mine experimented with varying the percentage risk per trade based on a look back period of performance. 

Both methods have been used by successful traders and Market Wizards. Both have strengths and weaknesses.

Some of my beliefs about backtesting

When it comes to trading, I like to think differently. I'm not afraid of being a bit of a heretic when it comes to thinking about the markets. While I adopt and use 'classical' trend following and breakout principles, I also like to think for myself, outside the box.

As an example, lots of traders swear by running backtests and tuning their trading models based on the results of their testing and analysis. Certainly, in some cases with getting to grips with a basic concept, backtesting can be of some use.

A tale of two setups

Rather than talk about the recent market shenanigans, the chart of the Dow covering the last few months offer us a good chance to compare a low volatility setup against a higher volatility setup.

From theory to practice - marching to your own beat

Yesterday I was asked an interesting question by an aspiring trader based in India who I have corresponded with for several months. I know he has eagerly been collating a lot of knowledge and information from a number of traders and resources over this period of time. Now he was basically asking me:

"How can I put all my trading knowledge into practice?"

The answer to this is a simple step-by-step process, which can be used by anyone in a similar position:

If there is nothing to do, then do nothing

The last couple of weeks have been frustrating in that, while I have been able to identify plenty of interesting looking setups, they have either:

• continued to see price consolidate and are yet to trigger; 
• had earnings releases or trading updates; or 
• price has fallen away rendering the set up being no longer of interest. 

This has coincided with an uptick in volatility in the major market averages and a pullback from the recent highs.

Two Mice and a Maze

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