When To Get Out

December 19, 2011

Any time a strong asset class goes through a short-term period of underperformance the question always comes up, “Is the trend over?” This is generally when I pull out my crystal ball. In reality, every trend follower must decide the sell criteria for each trade. Will it be based on the trader’s discretion (not recommended), or based on some objective rule set? Using relative strength rank stops is a topic that is covered in the white paper Relative Strength And Asset Class Rotation by John Lewis. For the purposes of the white paper, relative strength ranks were used to determine when to get out of a given trade. One of the most revealing results for the study is just how much different the results are over time by using different relative strength look-back periods for portfolio formation. For example, if you use a 3-month look-back period for your relative strength factor, the results were very different over time than if you used a 6-, 9-, or 12-month look-back period. In fact, the white paper detailed the results of using 1-, 2-, 3-, 9-, 12-, 18-, and 24-month look-back periods for portfolio formation.

Please read the white paper to see the details of the Monte Carlo testing process used for this study. This simulation was done on a universe of ETFs from a variety of asset classes over an 11-year period of time (2000-2010). However, the cumulative mean results are as follows:

whitepaper121911 When To Get Out

What conclusion can be drawn? The best results over the 11-year period of time came from using a 6-month look-back relative strength factor. For the purposes of the white paper, percentile ranks were used to determine when to get out of a a given trade. Getting out of a position every time its relative strength has a bad month or even bad three months of price performance did not lead to as good of performance over time as using an intermediate relative strength ranking stop.

This underscores the importance of understanding how to thoroughly test a set of decision rules so that you can be best prepared to run those decision rules in real time and with real money! It is human nature to want to bail out of a position after it looks like the trend may be turning. In hindsight, we may well see that indeed we would have been better to get out much earlier. Of course, we may also see that the relative strength stabilized and then moved higher.

The goal with any trend following system is to capitalize on long-term trends. Relative strength is ideally suited to help you accomplish that goal. However, it won’t come without some discomfort along the way. Today, the question may be about gold, but tomorrow the same question will be asked about a different asset class. Relative strength provides a clear process for determining when to get in and when to get out.


Don’t Eat the Marshmallow!

December 19, 2011

It turns out that one of the best predictors of future success is the ability to manage “hot” emotional states and to learn self-control. Stanford psychologist Walter Mischel concocted an experiment involving 4-year olds and marshmallows to test self-control back in the 1960s, and only understood its significance much later. (The experiment has been repeated more recently by others. Here, for example, is a video of Columbian psychologist Joachim de Posada replicating the results. Watch only if your tolerance for adorable 4-year olds trying to resist a marshmallow is extremely high!) As Jonah Lehrer writes in The New Yorker:

For decades, psychologists have focussed on raw intelligence as the most important variable when it comes to predicting success in life. Mischel argues that intelligence is largely at the mercy of self-control: even the smartest kids still need to do their homework.

This is very true in financial markets. Temperament trumps brains when it comes to making money over the long run. You can have a great plan, but if you do not have the discipline to execute it, the plan is useless.

News flow in financial markets—much of it alarming, since scary new always gets better ratings-gives investors a multitude of opportunities to behave badly. The best strategy? Distract yourself.

At the time, psychologists assumed that children’s ability to wait depended on how badly they wanted the marshmallow. But it soon became obvious that every child craved the extra treat. What, then, determined self-control? Mischel’s conclusion, based on hundreds of hours of observation, was that the crucial skill was the “strategic allocation of attention.” Instead of getting obsessed with the marshmallow—the “hot stimulus”—the patient children distracted themselves by covering their eyes, pretending to play hide-and-seek underneath the desk, or singing songs from “Sesame Street.” Their desire wasn’t defeated—it was merely forgotten. “If you’re thinking about the marshmallow and how delicious it is, then you’re going to eat it,” Mischel says. “The key is to avoid thinking about it in the first place.”

According to Mischel, this view of will power also helps explain why the marshmallow task is such a powerfully predictive test. “If you can deal with hot emotions, then you can study for the S.A.T. instead of watching television,” Mischel says. “And you can save more money for retirement. It’s not just about marshmallows.”

As Mr. Mischel points out, it’s not just about marshmallows. When clients ask me what to do in volatile markets, I only half-jokingly suggest that they read the sports pages. Focusing on the business news is just going to make you more likely to react. The more impulsive you are, the more likely you are to make a poor decision.

Self-control is very important when using return factors, none of which offer smooth sailing. Whether you are implementing relative strength or deep value or whatever, the market is going to gyrate and test you—basically do everything possible to get you to abandon your plan. A systematic, rules-based approach can be very helpful in this regard. If you have chosen a successful long-term strategy, more than anything else, your results are going to be dictated by how well you can follow it over the long run.

Hands Off!

Source: www.instructables.com


Weekly RS Recap

December 19, 2011

The table below shows the performance of a universe of mid and large cap U.S. equities, broken down by relative strength decile and quartile and then compared to the universe return. Those at the top of the ranks are those stocks which have the best intermediate-term relative strength. Relative strength strategies buy securities that have strong intermediate-term relative strength and hold them as long as they remain strong.

Last week’s performance (12/12/11 – 12/16/11) is as follows:

It was an especially lousy week for the laggards last week.