📖Jeremy Grantham
Master Your Emotions
Master your emotions to master the market.
The greatest enemy of the investor is himself. Fear, greed, regret, and pride cause more losses than any economic event. Master your emotions to master the market.
🏠 Everyday Analogy
📖 Core Interpretation
Jeremy Grantham highlights that many investment mistakes are psychological, not analytical. Managing behavior under stress is as important as finding ideas.
💎 Key Insight：Emotional control is the foundation of investment success.
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❓ Why It Matters
In volatile markets, fear and greed push investors to buy high and sell low. A behavioral framework reduces avoidable, self-inflicted errors.
🎯 How to Practice
Pre-write decision rules, slow down trades during stress, and separate market emotion from business facts before adjusting positions.
⚠️ Common Pitfalls
Following crowd emotion at extremes
Mistaking confidence for certainty
Forcing trades to quickly recover losses
📚 Case Studies
1
Avoiding the Tech Bubble (1999)
Grantham underweighted expensive tech stocks despite client pressure as valuations broke from historical norms.
✨ Outcome：Clients lagged during the final bubble phase but were largely spared the 2000–2002 crash, preserving capital and careers for patient managers.
2
Early Exit Before Global Financial Crisis (2007)
GMO reduced risk in equities and housing-related assets as Grantham warned of a major credit and housing bubble.
✨ Outcome：Some clients left due to short-term underperformance, but remaining investors suffered far smaller losses in 2008–2009, validating a risk-first approach.
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