Over the past couple of weeks I have had the pleasure of reading More Than You Know by Michael Mauboussin. Michael is currently Chief Investment Strategist of Legg Mason and has worked closely with famous Legg Mason Value Trust manager Bill Miller. He is known as a strong advocate of the latticework of mental models approach to investing made by famous by Charlie Munger. In this book of 30 short essays Michael draws upon several unconventional and diverse sources (ie: poker, horse racing, guppie love, Tiger Wood's golf swing, Tupperware Parties, etc) in order to develop investing strategies. I found the book to be very entertaining and useful as its true that some of the best investing knowledge comes from other sciences/disciplines rather than MBA classes or economic theory. Here are some of my favorite takeways/quotes from the book:
1) Investing is more about temprament than intelligence
2) It's important to distinguish between a company's fundamentals and the expectations embedded in the stock's price
3) Psychology is one of the most underrated parts of investing. By studying psychology you are able to learn about your biases and typical mistakes before you make them.
4) One commmon psychological error amongst investors is extrapolating the past into future projections of company performance
5) Alot of investment professionals try to jam problems through models they learned in economoics or business school classes. As the saying goes to the man with a hammer everything looks like a nail. Instead it would be much better for investors to take big ideas and models from several disciplines/sciences and utilize them for problem solving
6) Investment skill can only be determined over the long-term as there is too much randomness in short-term results
Favorite Quotes:
“First in any probabilistic field – investing, handicapping, or gambling – you’re better off focusing on the decision-making process than on the short-term outcome. You simply cannot judge results in a probabilistic system over the short-term because there is way too much randomness.”
“But investors often make the critical mistake of assuming that good outcomes are the result of a good process and that bad outcomes imply a bad process. In contrast, the best long-term performers in any probabilistic field – such as investing, sports-team management, and pari-mutuel betting – all emphasize process over outcome.”
“The frequency of correctness does not matter; it is the magnitude of correctness that matters. Say that you own four stocks, and that three of these stocks go down a bit but the fourth rises substantially. The portfolio will perform well even as the majority of stocks decline.”
“Stocks are sometimes priced for perfection. Even if the company makes or slightly exceeds its numbers the majority of the time (frequency), the price does not rise much. But if the company misses its numbers, the downside to the shares is dramatic. The satisfactory result has a high frequency, but the expected value is negative. Now consider the downtrodden stock. The majority of the time it disappoints, nudging the stock somewhat lower, but a positive result leads to a sharp upside move. Here the probability favors a poor result, but the expected value is favorable.”
“Of particular importance for money managers, stress encourages a short-term focus. Recent research shows that people (like other animals) often prefer small, immediate rewards to larger rewards in the future. Seeking short-term gains at the expense of more attractive long-term rewards is suboptimal for long-term investors.”
“Go to your doctor with the symptoms of stress and you’ll get a standard list of recommendations: seek support from social networks, exercise sufficiently, and make sure you have a healthy diet. How do you deal with the repercussions of stress in money management? The prescription is to work hard on maintaining an appropriate long-term focus.”
“Once an event has passed, we tend to believe that we had better knowledge of the outcome before the fact that we really did. Hindsight bias stands in the way of quality feedback----understanding how and why we made a particular decision. One antiodote to this bias is to keep notes of why you make decisions as you make them. These notes become a valuable source of objective feedback and can help sharpen future decision making.”
“But what really determines a price-earnings ratio? A company’s value is function of the market’s expectations for its growth rate and its economic returns. The fundamental concept explains why looking at growth in isolation can be so misleading. Growth can be good (when a company earns returns in excess of the cost of capital), bad (when returns are below the cost of capital), or neutral (when returns are equal the cost of capital.”
“Sustaining high returns is a huge potential source of wealth. Give two companies with the same initial returns and future growth rates, the business that can sustain above-cost-of-capital returns longer will be significantly more valuable and hence will trade at a much higher valuation multiple.
"A strategic assessment of a business earning high returns should reveal the source of the excess spread – typically either a consumer of production advantage – and provide some framework to consider the longevity of that advantage. Further, some businesses (especially those in network and knowledge businesses) enjoy increasing returns as they grow. A company’s strategic strengths, and the economics that result are essentially overlooked by a singular focus on growth.”
“Value investors often buy companies that are statistically inexpensive in the hope that economic returns improve. The classic value trap is buying a cheap company that deserves to be cheap based on poor economic returns. But buying a company that is cheap because of a temporary downturn is potentially very attractive if the market does not anticipate the turnaround.”
“Most stocks that are cheap are cheap for a reason, and the likelihood that a business earning poor returns resumes a long-term, above cost-of capital profile is slim. Yet the evidence that high-return persistence does occur (and the likelihood that markets misprice this persistence) suggest that investors with a strong grasp of competitive dynamics and a sufficient investment horizon have an opportunity to realize superior returns.”
“Diversity is the fuel for many natural and cognitive processes. Investors that have investment approaches, or information sources that are too narrow risk missing out on the power of diversity. The downside, of course, is that entertaining diverse ideas means sorting through lots of potentially useless inputs. But on balance diversity seems to enrich the investment performance – and the lives of – thoughtful investors.”