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An Investing Principles Checklist
-Risk – All investment evaluations should begin by measuring risk, especially reputational
- Incorporate an appropriate margin of safety
- Avoid dealing with people of questionable character
- Insist upon proper compensation for risk assumed
- Always beware of inflation and interest rate exposures
- Avoid big mistakes; shun permanent capital loss
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- Objectivity and rationality require independence of thought
- Remember that just because other people agree or disagree with you doesn’t make you right or wrong – the only thing that matters is the correctness of your analysis and judgment
- Mimicking the herd invites regression to the mean (merely average performance)
Preparation – “The only way to win is to work, work, work, work, and hope to have a few insights”
- Develop into a lifelong self-learner through voracious reading; cultivate curiosity and strive to become a little wiser every day
- More important than the will to win is the will to prepare
- Develop fluency in mental models from the major academic disciplines
- If you want to get smart, the question you have to keep asking is “why, why, why?”
-Intellectual humility – Acknowledging what you don’t know is the dawning of wisdom
- Stay within a well-defined circle of competence
- Identify and reconcile disconfirming evidence
- Resist the craving for false precision, false certainties, etc.
- Above all, never fool yourself, and remember that you are the easiest person to fool
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Analytic rigor – Use of the scientific method and effective checklists minimizes errors and omissions
- Determine value apart from price; progress apart from activity; wealth apart from size
- It is better to remember the obvious than to grasp the esoteric
- Be a business analyst, not a market, macroeconomic, or security analyst
- Consider totality of risk and effect; look always at potential second order and higher level impacts
- Think forwards and backwards – Invert, always invert
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- Remember that highest and best use is always measured by the next best use (opportunity cost)
- Good ideas are rare – when the odds are greatly in your favor, bet (allocate) heavily
- Don’t “fall in love” with an investment – be situation-dependent and opportunity-driven
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- “Compound interest is the eighth wonder of the world” (Einstein); never interrupt it unnecessarily
- Avoid unnecessary transactional taxes and frictional costs; never take action for its own sake
- Be alert for the arrival of luck
- Enjoy the process along with the proceeds, because the process is where you live
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- Be fearful when others are greedy, and greedy when others are fearful
- Opportunity doesn’t come often, so seize it when it comes
- Opportunity meeting the prepared mind; that’s the game
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- Recognize and adapt to the true nature of the world around you; don’t expect it to adapt to you
- Continually challenge and willingly amend your “best-loved ideas”
- Recognize reality even when you don’t like it – especially when you don’t like it
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- Remember that reputation and integrity are your most valuable assets – and can be lost in a heartbeat
- Guard against the effects of hubris and boredom
- Don’t overlook the obvious by drowning in minutiae
- Be careful to exclude unneeded information or slop: “A small leak can sink a great ship”
- Face your big troubles; don’t sweep them under the rug
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