Risk, Uncertainty, and the Unknowable


 by Wes McCain 

 Investing vs. Gambling

Risk, uncertainty and the unknowable are subjects that most investors ignore until they lose money; even then they may simply write it off to bad luck. Most investors think they “know” something about a potential investment when they make the initial purchase; gamblers, on the other hand would rarely state they “know” something, but they might tell you that they have a “hunch” or that the cards or dice are “hot.” Similarities between investing and gambling are mostly confined to how one manages the money or how one determines the bet size relative to the investment capital or stake. Investors and gamblers start out with an investable sum or a stack of chips.

The difference between investing and gambling lies in the nature of the risks involved.  Investable risks are risks that are inherent in the ownership of an economic asset like a stock, bond, bushel of wheat, or ounce of gold.  Risks that are taken at the casino do not exist independently of their creation but are created solely for the purpose of betting.

Let’s examine the risks inherent in owning an economic asset, like a bushel of wheat. Whoever owns the bushel of wheat also owns the risks associated with it, e.g. price risk and deterioration in its quality. These risks are not created for the purpose of betting on the future price change.  Instead, these risks are intrinsic and can be transferred to someone else, but the risks themselves cannot be eliminated by society as a whole.  Many commentators on commodity futures markets do not understand this principle of inherent risk or how modern futures markets work to transfer this inherent risk of ownership.  They frequently equate futures markets with gambling, which it most definitely is not.

Investing vs. Speculating

Free markets and exchanges are mechanisms which allow the efficient transfer of risks from those that do not wish to hold them to those that do (known as risk transference). These individuals and/or organizations are variously called speculators or investors. The difference is usually defined by the economic asset in question and the expected duration of the holding period.  Speculators may hold the risk for seconds, hours, days or even weeks.  Investors typically would hold these positions for months or years.  Speculators are frequently disparaged and blamed by the press or politicians whenever prices are “high” or “low.”  In fact, speculators are crucial participants in the process of risk transference.  Speculators hold the risk during the time period between Investor A’s decision to sell the economic asset and Investor B’s decision to purchase that same asset.  Without speculators markets would lose liquidity and price differences between trades would be larger, with greater bid-ask spreads. 

From the point of view of society as a whole, free markets and exchanges result in the minimum amount of capital invested in the process of price risk transference while, at the same time, this function is performed by those most skilled in the process. Less skilled speculators and investors lose money and either henceforth have a smaller economic influence or leave the business. Free-market mechanisms minimize the capital invested in transferring risk and remove poor decision makers. When no exchanges exist or the government socializes the risk, those mechanisms are dismantled. When the government rescues failing financial institutions they circumvent this invisible hand, leaving in place the bad decision makers.

Capital Allocation

One way of thinking about risk-taking is that you wish to ensure that you do not lose all your money, or so much of it that you no longer have enough money to invest or gamble again; this type of loss is called “permanent impairment of capital.” Capital allocation requires careful consideration if we are to avoid this catastrophe. Intuitively we know that making large investments, relative to our total capital, in a small number of stocks is risky. We might suspect that betting half our chips on the next throw of the dice or turn of the roulette wheel is also risky, assuming we wish to play the game many times in the future.

In gambling, many games of chance are designed so that each event is independent of the one preceding it and following it. These are true games of chance.  But this is not always the case. It is the author’s view that both blackjack and poker are games of skill because, among other things, the past cards played from the deck(s) affect the probable future outcomes and, therefore, the decision to take additional cards and the betting strategy to be employed.  It is possible to win at casino blackjack but it requires memorization of past cards played and a sophisticated betting strategy. The bettor must also have enough capital to stay in the game for hundreds of hands, retaining a seat at the table until the cards suggest a high probability of a win.  Professional poker demands even more skill than blackjack; it also requires enormous physical stamina to endure hours of continuous play.  In addition to keeping track of the cards, the player must combine his knowledge of probability, his assessment of the other players’ skill, and his betting strategy (to reduce the chances of permanent impairment of capital).  Thus, while both blackjack and poker risks are created for the purpose of betting, they are games that require skill to maximize return and minimize risk and are different than most casino games of chance.

Investing in economic assets is different from most gambling games in one important way: economic assets frequently are correlated with each other over time. Another way of thinking about this is that if two stocks are affected by the same third variable there is additional risk compared to the case if they were unrelated.  To minimize the risk of your investments being highly correlated with one another, invest in a diversified portfolio of hundreds, or even thousands, of stocks.  Investing in the entire world’s stock markets through an index fund or funds accomplishes the same thing in a very cost effective manner. This method of investing, assuming the investor has not borrowed against his portfolio, is sometimes referred to as long passive equity and short cash. While this approach minimizes the risks associated with specific stocks or industries, it is frequently criticized as only producing the “market return.”    

Returns are influenced, sometimes profoundly, by the date you enter the market. Investors often time the initial and sometimes subsequent investments in hopes of improving returns. Buying when assets are cheap is both very difficult and very rewarding. In the long run, most professionals are unsuccessful at timing the market, as are most individual investors.

The extreme other side of index fund or passive investing is called “stock picking” and might be described as “…put all your eggs in one basket, and watch the basket.”  This approach to investment management results in a less diversified portfolio and requires considerable skill and constant attention but does have the advantage of creating great wealth if done successfully.  Analysis of historical investment performance, net of fees, taxes and transaction costs, does not suggest that many investors are able to “…watch the basket” or perhaps even to select the right eggs for the basket.  This last point is far more significant than generally realized.  Consider that only one of the original 12 stocks in the Dow Jones Index (started May 26, 1896) remains; that company is General Electric. Nevertheless, GE was “…removed in 1898 and added back in 1899, removed in 1901 and finally added back for good in 1907.”[1] Remember Penn Central; or Polaroid and Kodak?  Do you recall Wang Computer and Digital Equipment?    A few years ago everyone in business carried Blackberries and the common folk carried Nokia phones; both companies lost enormous market share to Apple’s IPhone and to various phones using the Google Android operating system.  Look at what one company, Amazon, did to the great bookstores of America. Did you invest in Apple, Amazon or Google? If you study the returns to investing you will find that a substantial portion of the return comes from a short list of stocks. This is similar to our finding [2] that in an analysis of the daily returns in the market, most of the return comes from a small number of days and you had to be in the market for those days or your total return was minimal.

The evidence would seem to support two critical points: 1) own a lot of different stocks, hundreds or even thousands, and 2) hold them through thick and thin.  With the passive index approach to investing you will own Google, Apple, Facebook and Twitter alongside Penn Central, Kodak, Blackberry and Nokia.  In other words, you will own the winners, losers and everything in between. You will earn the market return; it can be done in a very cost effective manner with index funds. Alternatively, if you choose to put some or all your eggs in one basket, you need to be extremely skilled, disciplined and attentive to successfully outperform the overall stock market over a long period of time.

Conclusion

Risk, uncertainty and the unknowable can be overcome to a certain extent. While placing all your eggs in one basket or all your gambling money on one bet may make you rich, it also courts complete disaster and total loss due to one outlier of bad luck.  Bad luck happens just like good luck.  The overriding goal of investing is to try to avoid a permanent impairment of capital.

Therefore, the best way to manage uncertainty is to avoid big bets relative to your total capital and to rebalance or adjust your position periodically to maintain an asset allocation aligned with your risk tolerance. Investing based on predictions about the future direction of the financial markets may be tempting, but there is little evidence that anyone can accurately and consistently call turns in the financial markets or in the styles and asset classes that will be in favor or lose value. This is, unfortunately, unknowable. Our advice? Stay with a knowable, broadly diversified array of investments for the long term.

Endnotes

[1] http://www.fool.com/investing/general/2014/05/17/dow-39000.aspx
[2] http://stayingrich.net/r_market_timing.htm

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