Thursday, October 29, 2009

How Sister Mary Gertrude Used Naked Strategies with Second Graders


"Quickly people, keep to your right! No talking, quickly! No running!"

I remember it like it was yesterday. The fire drill. We would all assemble by the large oak tree, and Sister Mary Gertrude would count noses to make sure we were all there. Then, we'd wait for Sister Agnes to tell us we could go back to class.

School fires, blessedly, are very rare, but we practiced for them. Every student knows the rules. Should a fire break out, they know exactly what to do and where to go.

Bear markets are not rare. They happen every few years. Shouldn't we prepare for them by having bear market drills?

I am serious. Deciding on a rules based approach before the next bear market may very well be the best way to avoid a serious thinking error that can cause you to make the wrong decision. Chapter 9, How Thinking Errors Sabotage Your Investment Returns can give you more details.
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Wednesday, October 28, 2009

Can Watching Television Make You Rich?


The feature story title of the October 19th edition of Time magazine was "Why It's Time to Retire the 401(k)." One of the stories within the overall article centers on Dennis O'Neil, and it made me ill to read about his predicament.

Mr. O'Neil is a 63-year-old retiree who, according to the magazine, has $500,000 in a 401(k) plan and is drawing $75,000 per year to spend on living expenses. Mr. O'Neil realizes that at this rate of withdrawal, his money might not last the rest of his life. 

"Unless. . .he can make something happen in the stock market," the article says.

So to make something happen in the stock market, Mr. O'Neil "studies the market" by watching CNBC every day. "Right now, I want to know which part of the economy is going to recover first," he said.

In the preface to The Naked Portfolio Manager, I implore people to ask the question, "What evidence is there that a particular investment approach works?" So I respectfully but emphatically ask Mr. O'Neil, "What evidence is there that you can beat the market by watching television?"

To be a successful investor, you must learn to make good decisions. Chapters Four, Five and Six of The Naked Portfolio Manager explain the psychological reasons why it's so hard to make good investment decisions. Watching financial TV shows without a rules-based mechanical process in place makes you vulnerable for recency error, availability error, group think (discussed in Chapter Four) as well as a host of other thinking biases.

If you are reading this blog and you know Mr. O'Neil, would you please give him a copy of my book?
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Tuesday, October 27, 2009

Why Committees Suck at Decision-Making and What to Do About it



Have you ever been to a meeting like this? Ego wars, turf protection, even personal attacks are all part of the ugly, adversarial committee/office meeting scene. The boss never solicits the input of anyone in the room. He just makes an "Executive Decision."

Many years ago, Edward de Bono, a Rhodes Scholar who has written 70 books on thinking and decision-making, developed the concept of parallel thinking. The idea was to get everyone thinking about the same thing at the same time. His concept added structure and discipline to the thinking process, resulting in much more effective decision-making.

To make this abstract concept tangible, he developed six different colored thinking hats as a way to describe each way of thinking about a problem. His book, The Six Thinking Hats, has become an international bestseller and has been translated into over thirty languages. This simple tool can result in clearer thinking, better communications, and greater creativity. In September, I attended a four-day session to get certified on teaching this decision-making method. This training was nothing short of life-changing.

I'm teaching a series of free ninety-minute introductory courses starting November 5 at 5000 Monument Avenue in Richmond. If you would like more information, please contact Holly David at hdavid@togreatacclaim.com.

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Saturday, October 24, 2009

The Edge.

Who's more likely to win this game? If you guessed the "naked" player on the left, you're right!

In chess, statistical analysis shows that white trumps black 55% of the time, thus, giving white the edge. The same applies to "naked decision-makers" who have the odds, that being statistical prediction methods, on their side, thus giving them a small (and sometimes not so small!), but clear edge.

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Tuesday, October 20, 2009

Naked Strategies 4, Traditional Approach 0

I recently had a chance to talk to Dr. Richard Marston, the widely respected economics professor from The Wharton School, and what he told me will have major implications for investors considering "naked strategies."

Dr. Marston told me he had been hired by four family offices to oversee their investment managers. (A family office is a private investment company that manages the wealth of a single family.) Only the super-wealthy can afford family offices and gain access to this kind of investment advice. These four families clearly went the low-risk-taking, "belt-and-suspenders" route by hiring Dr. Marston to watch the people who they hired to watch their money.

You would think with all this money being spent on investment advice, the family office would have made some really top-notch investment decisions, wouldn't you? Well, it didn't work out that way.

Dr. Marston said he advised all the families earlier this February to rebalance their portfolios to their stated asset allocation. This would have meant adding money to equities. Not one of the families followed his advice. And as we all know, the market has advanced substantially since then.

While each of the families had spent a fortune on investment advice, they had not developed any "behavioral strategies" to deal with the emotional unease that comes with making investment decisions during a bear market.

These families just didn't realize that their decision-making stategies were fundmentally flawed. And they made the same thinking errors that thousands of less affluent investors make all the time that sabotage their investment results (See chapter 9 of The Naked Portfolio Manager for more information).

If those families had implemented "naked strategies" (rule-based, mechanical approaches to decision-making that are efficient, effective, and economical - you know the drill. . .), they could have avoided the types of emotionally-driven decision-making - or in this case, NON-decision-making - that even a brilliant MIT Ph.D. can't fix.
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Saturday, October 17, 2009

I Am No Moses

I was recently on "The Poppoff Show" with Mary Jane Popp and found it both an exhilerating and challenging experience! Mary Jane fired questions at me machine gun-style. Midway though the interview she said, "I just don't see the difference between 'naked strategies' and the traditional approach." Wow! I must have done a really bad job explaining it.

Naked strategies are, again, rules-based methods of coming to a decision based on predetermined criteria. Traditional methods, on the other hand, often have no framework for the manager to make a decision. The manager simply does the best he or she can based on the information available, including his or her training, education, and experience as well as his or her biases, prejudices, and idiosyncratic decision-making tendencies.

We need human judges for our society to function. We can't make all of our decisions based on rules/naked strategies. But there are times when rules simply are the best way to make decisions. The key is to pick the right decision-making method for the particular situation.

I explained to Mary Jane that using naked strategies was a very efficient, cost-effective method of coming to a decision - a method that is not used nearly enough on Wall Street.

The superiority of naked strategies versus human decision-making is well documented. Over fifty years ago, noted psychology professor Paul Meehl wrote a revolutionary book on naked decision-making (he referred to it as "statistical prediction") called Clinical vs. Statistical Prediction: A Theoretical Analysis and a Review of the Evidence, and since then, hundreds of studies have been done that validate the superiority of this method of making decisions. Yet Wall Street continues to ignore this important work.

After I got finished with the interview, I thought about the story of Moses. Remember when God asked him to lead the Isralites out of Egypt? He responded, " Not me Lord." But he became the messenger.

I don't know why the advantages of naked investing have been ignored for so long and why, with all the books written on investing, no one covered this important topic before. But I am going to make it my mission to educate the investing world about this topic. I am no Moses, but I have Twitter, Facebook, this blog, and its loyal readers. With your help, we can change the way people manage their money for the better, one investor at a time.

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Wednesday, October 14, 2009

How Many Variables Do You Need To Create A Good Naked Strategy?

As I wrote in one of my last blog posts, "naked strategies" are quite simply highly efficient, cost-effective methods of coming to a decision quickly. These methods help investors avoid many of the delays that are frequently part of the decision-making process, such as the delays that occur when human decision-makers apply their judgment.

Comparing naked portfolio managers to traditional portfolio managers, the latter often uses far more information than is used in the naked model. People assume that humans judges are more reliable and sometimes even more cost-effective in their investment decision-making because they use a lot more information. Yet ironically, naked strategies often outperform human managers despite using far less information.

There are many examples of this out side the area or portfolio managment. Orley Ashenfelter, a Princeton professor, developed a model for predicting the value of wine futures based on just two variables (rainfall and temperature). That model proved much more reliable than the decision-making of wine speculators, who had the same data available to them plus the benefit of using the old "swish and spit" method. Another example: The Goldman chest pain decision aide used to make triage decisions for patients uses just four variables, yet it made more reliable triage decisions than the cardiologists and emergency room doctors at Cook County Hospital in Chicago who had far more information. Greenblatt's Magic Formula, which I discuss in The Naked Portfolio Manager, uses just two inputs, yet has produced impressive results relative to market averages.

One would think that with more information, human judges would be able to out-predict models, but the evidence clearly indicates this is not the case. The problem that human judges have is that when you have lots of information, it's sometimes difficult to determine what data is extremely important and what is almost irrelevant. With naked decision-making strategies, on the other hand, the method's construction tells you what data is truly important.

Good models focus on only the most important criteria necessary for making the decision. Models with a huge number of factors often dilute the value of the most important variables by averaging them with inputs of lesser value.
Decision-Making Best Practice #20: If a model has a very large number of inputs, it usually means that the model's creator has not done a very good job of identifying the most important inputs. Be very skeptical of these models.

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Friday, October 9, 2009

Recency, Availability, and Confirmation Bias - How Obama Won The Nobel Prize.

The Nobel selection committee choice of Barack Obama exemplifies characteristic human thinking errors that lead to poor decisions. This year the committee had a record 205 nominations. While we won't know for 50 years who all the people were who were nominated (the committee seals the nomination list), we do know that by rule that nominations were closed on February 1 of this year. At that time Obama had been President for exactly ten days. Recency error is the tendency to weight recent events more heavily than past prior events, even if the prior events are more important. In the past the Nobel Prize has gone to people like Mother Theresa, Nelson Mandela, Jody Williams ( a Connecticut teacher who formed an international organization to ban land mines ) and Dr. Marin Luther King. All of these people had a life time of accomplishments. But let's remember what was on everyone's mind in late January of this year. The United States had just had the most spectacular inauguration ever that was watched world wide.

Since Obama did nothing before becoming President to justify the Nobel Prize, his nominators likely thought much more about the most recent events than the life time achievements of people like Sima Samar, an Afghan doctor who repeatedly risked her life to provide basic medical service to poor Afghans or Piedad Córdoba, a Colombian lawyer who brokered the peace agreement between the Government of Colombia and the FARC guerrilla group which also lead to the guerrilla groups release of hostages.

Still, even if you attribute Obama's nomination for the award to recency error, this can not explain his selection. To understand this you have to consider the human thinking error of confirmation bias. The Nobel Committee cited "his extraordinary efforts to strengthen international diplomacy and cooperation between peoples." The Nobel committee members must have searched very hard to reasons to justify their prior decisions since Obama did not negotiate any major nuclear nonproliferation treaties or end any wars. His accomplishments in this area pale in comparison to past winners like Henry Kissinger and F. W. de Klerk.

Another thinking error the committee made was availability. This is the mistake of considering facts that are easy to recall and ignoring or dismissing facts that are difficult to recall. With billions of people on this planet there are tens of thousands of people who are doing truly important work to eliminate human suffering. Many of those people are toiling in relative obscurity and could use the notoriety and prize money to further humanity. Our minds naturally think about people in the news, but it is the responsibility of the committee to seek out those deserving souls that are trying to save their piece of the world and give them due consideration. The committee clearly failed to do this.

Selecting Obama demonstrates how disorganized the thinking of even very important organizations can be. Instead of relying on committee members to nominate people, the committee should adopt a much more comprehensive rules based approach which would allow people like Sima Samar and Piedad Coroba to get due consideration.
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Wednesday, October 7, 2009

What Naked Strategies and Kentucky Fried Chicken Have in Common

You've heard of the "KFC," right? Colonel Harland Sanders is known for having developed the best recipe for fried chicken. Ever.

If you don't know the story, he was operating a service station in Corbin, Kentucky in the 1930's when he started preparing meals for travelers and serving them in a tiny dining room. He had been cooking up meals for his younger siblings since he was a boy, so by then his culinary skills were quite good. However it was at that small restaurant that he perfected his now famous secret recipe of eleven herbs and spices that went on to make history in the fast food industry.

So what does this have to do with naked strategies? Plenty. It took Colonel Sanders years to develop his recipe. He was constantly testing it by adding this ingredient and taking that one out, until he had it just right. This is actually very similar to the process that cardiologist Lee Goldman used when he developed his "recipe" for making decisions about patients who were experiencing chest pains. His decision aide became known as "Goldman's Criteria" and was used by hospitals to make triage decisions. (See Blink by Malcolm Gladwell for more info.) Back to Colonel Sanders. . . The Colonel had hundreds of herbs and spices to choose from, but he had to test and test again until he found the right ones to use in the right proportions. Likewise, Goldman had a huge amount of medical data that was available on heart attack patients. He had to determine what factors were most significant in diagnosing a heart attack so he could separate the patients that needed to be admitted to the cardiac unit from those who could be sent home with aspirin.

With naked investment strategies, an expert analyzes past pricing data to determine what factors were present in winning portfolios. He or she then uses this past data to construct rules for making decisions going forward. Several of these strategies are detailed in The Naked Portfolio Manager.

So the next time you eat a piece of KFC chicken, remember that you may not have the secret to the Colonel's eleven herbs and spices recipe, but there is no secret to how to make better investing decisions. . . if you use naked strategies.
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