📖Jeremy Grantham
Research Before Buying
Thorough research precedes every sound investment.
Never invest in anything you don't fully understand. Thorough research is the foundation of every sound investment decision.
🏠 Everyday Analogy
📖 Core Interpretation
Jeremy Grantham emphasizes durable business quality over short-term noise. A strong model, real competitive edge, and disciplined capital allocation matter more than quarterly excitement.
💎 Key Insight：Understanding prevents costly surprises.
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❓ Why It Matters
Without business-quality filters, investors drift toward stories rather than economics. Durable cash generation is what supports long-term valuation.
🎯 How to Practice
Use a checklist covering moat, management, unit economics, and capital allocation; track long-term cash generation instead of quarter-to-quarter noise.
⚠️ Common Pitfalls
Buying narratives instead of cash-generating economics
Overreacting to short-term operating noise
Ignoring management quality and capital allocation
📚 Case Studies
1
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.
2
Avoiding the Dot-Com Bubble (1999)
Grantham refused to chase tech and internet stocks despite underperforming peers during the late-1990s mania.
✨ Outcome：Clients owning quality, reasonably valued stocks avoided catastrophic losses when the bubble burst in 2000–2002.
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