The Power To Perform: mhj3.com Managing Investing Judgment Since 1989

Investing Fool's Tool # 7: Pie Charts
Form void of substance

Think about it: 'Past investment performance is not an indicator of future investment results' is a required, responsible, and absolutely true investing footnote, an investing fact that anyone who has spent more than a nanosecond in the financial markets would or should know, and an investing law designed to protect the investing naive, innocent, and unsuspecting.

Then why would one blindly place his/her trust in the present and his/her hope for the future in a mythical investing science — Modern Portfolio Theory and all of its illegitimate relatives such as Monte Carlo Analysis, Efficient Frontier Analysis, Beta, Brinson's Asset Allocation, Pie Charts, and a distant relative, Technical Analysis (worth a glance) that relies solely on past performance investment data to feed hypothetical and contrived investing algorithms in a misguided effort to predict future investment results?

All are just other ways to record and to illustrate investment history without valid analytical, interpretive, deductive, predictive, or directional investment value.

If this nonsense were valid, there would be no need for investing analytics, forecasting, or guidance of any kind — research, analysis, opinion, advisors — and one would simply select investments based on past performance without regard to suitability, quality, structure, or risk.

Explained another way, a thermometer measures temperatures in degrees as the weather changes.

A thermometer is a recording device not a forecasting one and, therefore, it cannot be used to predict future temperature levels.

Standard Deviation, Efficient Frontier, Beta, VaR, and Sharpe Ratio are much like a thermometer; merely means to measure past (contrived) relative investment performances between investment variables and neither the cause of nor the predictor of either.

Furthermore, if a thermometer also happened to store prior temperature readings on a daily basis, you certainly would not retrieve that information and use it to predict tomorrow's or next week's temperature readings.

As one would have to analyze the weather-changing causal variables that affect weather, such as humidity and barometric pressure, to predict future temperature levels.

The same holds true for historical Standard Deviation, Efficient Frontier, Beta, VaR, and Sharpe Ratio readings as a basis for predicting the investing future.

Future investment values and associated investment/investing risks can only be meaningfully understood and predicted based on one’s correct understanding and interpretation of the fundamental performance changing, causal investment performance variables that actually affect an equity’s behavior.

Keep in mind, there is no theory — modern or otherwise — that can be ordained, no computer that can be programmed, no software that can be designed, no investing tool that can be 'imagineered,' no technical analysis voodoo methodology that can be contrived, and no equation that can be divined to quantify, evaluate, and predict the primary forces that drive the sublime chaos of the financial markets and investment prices; human consensus, mood, and behavior; intelligent and not, knowledgeable and not, reasoned and not, rational and not, and logical and not.

Pie Charts

The investment industry has created a new investment language over the last too many years; pie chart.

Investment firms and their advisors find that this investment graffiti makes it easy to generate investment planning reports, to make recommendations, and to justify change based on colors.

Converting data to pie charts lends itself to the generation of a wide range of splendid graphic and data representations that obscure the issues, oversimplify investment planning, and subliminally suggest that past investment performance will be, in fact, future investment results.

Pie Charts and their relatives deaden the brain, suffocate rather than illuminate, obscure rather than clarify, trivialize the task at hand, and leave out the details.

  • Shakespeare did not write, "How do I love thee, let me show you this pie chart."

  • Michelangelo, at the Sistine Chapel, did not think, "I will paint them a pie chart."

  • Steven Hawking did not say, "The pie chart you see on the screen explains the issues of quantum physics and black holes."

What would happen if pie chart were translated and became the universal language of industry and the arts?

  • Your Accountant: "I prepared your tax return for you in a detailed pie chart format to give to the IRS."

  • Your Attorney: "You will save some money if I do a multicolored pie chart corporate restructuring for you."

  • Your Doctor: "Here are your pie chart physical results. The pie chart indicates that we should remove all of the yellow and add a little more red when we go into surgery and open you up in a few minutes. By the way, you are in luck because the sliver of black in the pie chart seems to indicate that anesthesia will not be necessary while you are being operated on."

  • Your Architect: "I show my designs in primitive pie chart rather than in the usual, more traditional blueprint format to create a more natural impression and to give you a better picture of what your new home may look like. Red represents brick and green is for the lawn. The gray indicates that we will be using a lot of nails. Oh yes, I almost forgot, the pie chart seems to indicate that the structure should hold."

Why would anyone use something rather ambiguous, like colors, to explain something that is quite clear, like numbers?

The reasons are to hide the numbers (not good), because the numbers are not understood (worse), because the numbers are not known (worse yet), or to keep the recipient from being too informed becasue the investment advisor is not well informed (the very worst).

Pie Chart Investment Planning

If you were building a home for your future, what would you think of an architect who, while competing for your business, gave you your floor plan in pie chart rather than as a blueprint?

If you were going to make decisions about your investment future, which illustration below would be a better starting point?

This?

 

 

Or This?


Examples were randomly selected, not related, and Gross Commissions were omitted.

For me and from my experiences, I enjoyed devouring pie chart (not) competition on a daily basis.

The Solution

If you are presently addicted to the primitive language of pie chart or if you are suffering from pie chart withdrawals, we can help.

If you are in denial of your affliction and continue to be satisfied with things as they are, obscure and superficial, may the force be with you.

How do I know about all of this? I was once suffered from this terrible, disabling malady.