📖Charlie Munger

Power of Compounding

🌳 Advanced★★★★★

Understanding compound interest — and the difficulty of achieving it — is key to financial wisdom.

💬

Understanding both the power of compound interest and the difficulty of getting it is the heart and soul of understanding a lot of things.

— Poor Charlie's Almanack，2005

🏠 Everyday Analogy

Compound interest is like rolling a snowball—the larger the snowball and the longer the slope, the more astonishing the final result. It may start as just a small handful of snow, but if you keep rolling it, it will eventually grow into a massive snowball. The same is true for investing: even with a small starting point, given enough time and a stable rate of return, wealth can grow exponentially.

📖 Core Interpretation

Compound interest is the eighth wonder of the world. Understanding its power and the difficulty of harnessing it lies at the heart of investing.
💎 Key Insight：Compounding is simple in theory but hard in practice. The difficulty lies not in the math but in the behavior: staying invested through crashes, avoiding fees that erode returns, resisting the urge to trade, and being patient for decades. Munger emphasizes that most investors understand compounding but few have the temperament to actually harness it.

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❓ Why It Matters

Compounding requires time to accumulate, and the cost of interrupting it is exceptionally high.

🎯 How to Practice

Start early, remain patient, and avoid actions that disrupt the compounding process (such as frequent trading).

🎙️ Master's Voice

There is no better teacher than history in determining the future.
Munger studies business history obsessively. Understanding what worked and failed in the past illuminates the future.

⚔️ Practical Guide

✅ Decision Checklist

  • Have I studied the history of this business?
  • What does history suggest about the future?
  • Am I learning from past patterns?

📋 Action Steps

  1. Read business history extensively
  2. Study past industry cycles
  3. Apply historical patterns

🚨 Warning Signs

  • Ignoring history
  • Believing this time is different
  • No historical perspective

⚠️ Common Pitfalls

✕Don't underestimate the power of early-stage accumulation.
✕The principle of compounding also applies to negative factors, such as bad habits.

📚 Case Studies

1
Berkshire Hathaway Transformation (1965)
Munger and Buffett began acquiring Berkshire and reinvesting earnings into high‑return businesses like insurance and Coca‑Cola, allowing gains to compound over decades.
✨ Outcome：From 1965–2023, Berkshire’s per‑share market value compounded about 19.8% annually, massively outperforming the S&P 500.
2
Investment in See’s Candies (1973)
Munger pushed for buying See’s despite a high-looking price, valuing its durable brand and pricing power. Earnings were retained and reinvested at high returns for many years.
✨ Outcome：A $25 million purchase produced over $2 billion in pretax earnings, illustrating compounding from a great business held long term.

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