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Big Mistakes

Big Mistakes

The Best Investors and Their Worst Investments
by Michael Batnick 2018 192 pages
3.70
1k+ ratings
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8 minutes
Listen to Summary (8 minutes)

Key Takeaways

1. Even the greatest investors make mistakes

"It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."

Humility is crucial. Even legendary investors like Benjamin Graham, Warren Buffett, and John Maynard Keynes have made significant errors in their careers. These mistakes often stem from overconfidence, straying from one's area of expertise, or failing to adapt to changing market conditions.

Learning from failures is essential. The most successful investors are those who can recognize their mistakes, learn from them, and adjust their strategies accordingly. This ability to be self-critical and adaptable is often what separates great investors from good ones.

Examples of notable mistakes:

  • Benjamin Graham's losses during the Great Depression
  • Warren Buffett's acquisition of Dexter Shoe Company
  • John Maynard Keynes' early failures in currency speculation

2. Overconfidence can lead to costly errors

"Ideas are part of who we are. They become like possessions. Especially publicly. I mean, flip flopping is a bad word. I love changing my mind!"

Cognitive biases affect everyone. Overconfidence is a particularly dangerous bias in investing, as it can lead to excessive risk-taking and an inability to recognize when one's strategy is flawed. Even highly intelligent and successful investors are susceptible to this bias.

Challenging your own assumptions is crucial. Regularly questioning your investment theses and being open to changing your mind are essential habits for successful long-term investing. This involves actively seeking out information that contradicts your views and being willing to admit when you're wrong.

Signs of overconfidence in investing:

  • Ignoring contradictory evidence
  • Excessive trading
  • Concentration in a single stock or sector
  • Reluctance to sell losing positions

3. Concentrated investing carries significant risks

"Concentrate to get rich, diversify to stay rich."

High risk, high reward. Concentrated investing can lead to exceptional returns, as demonstrated by investors like Warren Buffett and Charlie Munger. However, it also exposes investors to significant downside risk if their bets don't pan out.

Balance is key. While concentration can be a path to wealth creation, it's important to recognize the inherent risks and to diversify as one's wealth grows. This approach helps protect against catastrophic losses and ensures long-term financial stability.

Risks of concentrated investing:

  • Single-company risk
  • Sector-specific downturns
  • Regulatory changes
  • Technological disruption

4. The importance of staying within your circle of competence

"If you play games where other people have the aptitudes and you don't, you're going to lose."

Know your strengths. Successful investing often involves sticking to areas where you have a genuine understanding and competitive advantage. Venturing outside this circle of competence can lead to poor decision-making and significant losses.

Continuous learning expands opportunities. While it's important to stay within your circle of competence, actively working to expand that circle through study and experience can open up new investment opportunities over time.

Ways to define and expand your circle of competence:

  • Identify industries you understand well
  • Leverage professional experience
  • Read extensively about new sectors
  • Seek mentorship from experts in different fields

5. Recognizing and learning from investment failures

"If you get into anybody far enough, you've got yourself a partner."

Failure is inevitable. Every investor, no matter how successful, will experience failures and setbacks. The key is to approach these failures as learning opportunities rather than letting them derail your long-term strategy.

Conduct post-mortems. After each significant investment decision, whether successful or not, it's valuable to analyze what went right or wrong. This process helps refine your investment approach and avoid repeating mistakes.

Questions to ask when analyzing investment failures:

  • What assumptions were incorrect?
  • Was the initial thesis flawed?
  • Did external factors change?
  • How could the risk have been better managed?

6. The dangers of confusing brains with a bull market

"Genius is a rising market."

Market cycles create illusions. During bull markets, many investors mistake luck for skill, leading to overconfidence and excessive risk-taking. This can set them up for significant losses when market conditions inevitably change.

Maintain perspective. It's crucial to understand the broader market context when evaluating your investment performance. Outperforming in a bull market doesn't necessarily indicate superior skill, just as underperforming in a bear market doesn't always reflect poor decision-making.

Signs of confusing brains with a bull market:

  • Attributing all gains to personal skill
  • Ignoring broader market trends
  • Taking on increasing levels of risk
  • Dismissing cautionary advice

7. Managing emotions and avoiding regret in investing

"My intention was to minimize my future regret."

Emotions can derail strategies. Fear, greed, and regret are powerful emotions that can lead investors to make irrational decisions, such as selling at market bottoms or chasing overvalued assets.

Develop a disciplined approach. Creating and sticking to a well-thought-out investment plan can help mitigate emotional decision-making. This might involve setting clear entry and exit criteria, diversifying across asset classes, and regularly rebalancing your portfolio.

Strategies for managing emotions in investing:

  • Automate investment decisions where possible
  • Limit exposure to daily market noise
  • Practice mindfulness and emotional awareness
  • Seek objective advice from trusted sources

8. The challenge of repeating exceptional investment success

"You only need to win once."

Extraordinary returns are rare. While some investors achieve phenomenal success with a single investment or strategy, repeating such performance consistently is extremely difficult. The desire to replicate past successes can lead to excessive risk-taking and poor decision-making.

Focus on long-term consistency. Instead of chasing exceptional returns, aim for a consistent, disciplined approach that can generate solid returns over time. This approach is more likely to lead to sustained wealth creation and preservation.

Challenges in repeating investment success:

  • Changing market conditions
  • Increased competition
  • Larger asset base to manage
  • Psychological pressure to outperform

9. The value of patience and discipline in long-term investing

"If you're not willing to react with equanimity to a market price decline of 50 percent or more two or three times a century, you're not fit to be a common shareholder and you deserve the mediocre result you're going to get compared to the people who do have the temperament, who can be more philosophical about these market fluctuations."

Time is an investor's ally. The power of compounding works best over long periods, and the most successful investors are often those who can maintain a steady course through market volatility.

Develop mental fortitude. Building the ability to withstand market downturns without panic selling is crucial for long-term investment success. This involves understanding market cycles, having realistic expectations, and maintaining a diversified portfolio aligned with your risk tolerance.

Benefits of patient, disciplined investing:

  • Reduced transaction costs
  • Lower tax liabilities
  • Ability to benefit from long-term market trends
  • Reduced impact of short-term market noise

Last updated:

FAQ

What's "Big Mistakes: The Best Investors and Their Worst Investments" about?

  • Focus on Mistakes: The book by Michael Batnick explores the biggest mistakes made by some of the world's most successful investors, highlighting that even the best have faced significant failures.
  • Learning from Errors: It emphasizes the importance of learning from these errors to improve one's own investment strategies and decision-making processes.
  • Profiles of Investors: The book profiles various renowned investors, such as Warren Buffett, Jesse Livermore, and Benjamin Graham, detailing their investment blunders.
  • Human Element in Investing: It underscores the human emotions and psychological biases that often lead to these investment mistakes.

Why should I read "Big Mistakes: The Best Investors and Their Worst Investments"?

  • Gain Perspective: Reading the book provides insights into the challenges and setbacks faced by legendary investors, offering a realistic perspective on investing.
  • Learn from the Best: It allows readers to learn from the mistakes of successful investors, potentially avoiding similar pitfalls in their own investment journeys.
  • Understand Behavioral Finance: The book delves into behavioral finance, explaining how emotions and cognitive biases can impact investment decisions.
  • Improve Decision-Making: By understanding these mistakes, readers can enhance their decision-making skills and develop more robust investment strategies.

What are the key takeaways of "Big Mistakes: The Best Investors and Their Worst Investments"?

  • Mistakes Are Inevitable: Even the most successful investors make mistakes, and these errors are an integral part of the investment process.
  • Emotional Control: Managing emotions and avoiding cognitive biases are crucial for successful investing.
  • Long-Term Perspective: A long-term investment approach often helps in overcoming short-term setbacks and market volatility.
  • Continuous Learning: Investors should continuously learn from their experiences and those of others to refine their strategies.

What are the best quotes from "Big Mistakes: The Best Investors and Their Worst Investments" and what do they mean?

  • "Tell me where I'm going to die so I never go there." - Charlie Munger: This quote emphasizes the importance of understanding and avoiding potential pitfalls in investing.
  • "If a man is both wise and lucky, he will not make the same mistake twice." - Jesse Livermore: It highlights the value of learning from past mistakes to avoid repeating them.
  • "The most important thing successful investors have in common is worrying about what they can control." - Michael Batnick: This underscores the importance of focusing on controllable factors in investing rather than external uncertainties.
  • "It is better to be roughly right than precisely wrong." - Attributed to John Maynard Keynes: This suggests that having a general understanding of investment principles is more valuable than being overly precise but incorrect.

How does Michael Batnick define "value investing" in the book?

  • Margin of Safety: Value investing involves buying securities at a discount to their intrinsic value, providing a margin of safety.
  • Long-Term Focus: It emphasizes a long-term perspective, focusing on the underlying value of a business rather than short-term market fluctuations.
  • Avoiding Overvaluation: Value investors seek to avoid overvalued stocks, instead looking for undervalued opportunities with potential for growth.
  • Behavioral Discipline: Successful value investing requires discipline to avoid emotional reactions to market volatility and to stick to a well-defined strategy.

What lessons can be learned from Warren Buffett's mistakes as discussed in the book?

  • Overconfidence: Even Buffett has fallen prey to overconfidence, as seen in his costly investment in Dexter Shoes.
  • Importance of Moats: Buffett emphasizes the importance of investing in companies with strong competitive advantages or "moats."
  • Learning from Errors: Buffett is transparent about his mistakes, using them as learning opportunities to improve future investment decisions.
  • Focus on Fundamentals: Despite mistakes, Buffett's focus on fundamental analysis and long-term value has been key to his success.

How does the book explain the concept of "behavioral finance"?

  • Emotional Impact: Behavioral finance examines how emotions and psychological biases affect financial decision-making.
  • Cognitive Biases: The book discusses various cognitive biases, such as overconfidence and hindsight bias, that can lead to investment mistakes.
  • Market Behavior: It explores how collective investor behavior, driven by emotions, can lead to market inefficiencies and opportunities.
  • Practical Application: Understanding behavioral finance can help investors make more rational decisions and avoid common pitfalls.

What is the significance of "circle of competence" as mentioned in the book?

  • Understanding Limits: The concept emphasizes the importance of understanding one's own knowledge limits and investing within that area of expertise.
  • Avoiding Overreach: Investors are advised to avoid venturing into unfamiliar areas where they lack expertise, as this can lead to costly mistakes.
  • Focus on Strengths: By focusing on areas where they have a competitive advantage, investors can make more informed and confident decisions.
  • Buffett's Approach: Warren Buffett is a strong proponent of this concept, often attributing his success to staying within his circle of competence.

How does the book address the role of luck in investing?

  • Luck vs. Skill: The book acknowledges that luck plays a significant role in investing, alongside skill and strategy.
  • Recognizing Fortuity: Successful investors often recognize the role of luck in their achievements and remain humble about their successes.
  • Avoiding Overconfidence: By understanding the impact of luck, investors can avoid becoming overconfident and making reckless decisions.
  • Balancing Factors: The book suggests that a balanced approach, considering both skill and luck, is essential for long-term investment success.

What are some common investment mistakes highlighted in the book?

  • Overtrading: Frequent buying and selling can lead to high transaction costs and poor investment performance.
  • Emotional Reactions: Allowing emotions to drive investment decisions often results in buying high and selling low.
  • Ignoring Fundamentals: Focusing on short-term market trends rather than the underlying value of investments can lead to poor outcomes.
  • Lack of Diversification: Concentrating investments in a few assets increases risk and potential for significant losses.

How does "Big Mistakes" illustrate the importance of learning from past errors?

  • Case Studies: The book uses real-life examples of successful investors to show how they learned from their mistakes.
  • Continuous Improvement: It emphasizes the importance of continuous learning and adapting strategies based on past experiences.
  • Avoiding Repetition: By understanding the reasons behind past mistakes, investors can avoid repeating them in the future.
  • Growth Mindset: The book advocates for a growth mindset, where mistakes are seen as opportunities for development and improvement.

What advice does Michael Batnick offer for managing investment risk?

  • Diversification: Spreading investments across different asset classes and sectors to reduce risk.
  • Emotional Discipline: Maintaining emotional discipline to avoid impulsive decisions during market volatility.
  • Long-Term Focus: Adopting a long-term perspective to ride out short-term market fluctuations and focus on fundamental value.
  • Risk Assessment: Regularly assessing and adjusting risk exposure based on changing market conditions and personal circumstances.

Review Summary

3.70 out of 5
Average of 1k+ ratings from Goodreads and Amazon.

Big Mistakes: The Best Investors and Their Worst Investments receives mixed reviews. Some readers find it insightful, highlighting famous investors' errors and offering valuable lessons. Others criticize its superficiality and poor editing. The book is praised for its unique angle on investing, focusing on mistakes rather than successes. Many appreciate its brevity and accessibility for beginners. However, experienced investors may find the content familiar. The final chapter, detailing the author's personal journey, is frequently noted as the book's strongest section. Overall, it's considered a quick, enjoyable read with potential lessons for investors.

Your rating:

About the Author

Michael Batnick is the Director of Research at Ritholtz Wealth Management, where he leads internal research efforts and contributes to investment strategy and risk management for clients. A Chartered Financial Analyst (CFA), Batnick stays informed about industry trends and research. He authored "Big Mistakes: The Best Investors and Their Worst Investments" and co-hosts the Animal Spirits podcast. Batnick's career trajectory is notable, having progressed from being unemployed for two years to his current position by seizing opportunities and networking effectively. His work focuses on developing portfolio strategies and analyzing market trends for the firm's investment committee.

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