Legg Mason's Michael Mauboussin on Investment Strategies

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Jun 27, 2007
Turtles in Omaha: "The difference in [investment] return had nothing to do with knowledge and everything to do with emotional and psychological factors. We had all been taught the same thing, but my return . . . was three times that of the others."


• What separates good from great investors is not knowledge or raw smarts, but patterns of behavior.

• All investors should be alert to black swans—events that are outliers, have an extreme impact, and are explained only after the fact.

• Cognitive errors, including loss aversion, are often the source of suboptimal investment decisions.

• Investors tend to underestimate the role of randomness in results.


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