📖Joel Greenblatt
Price vs Value Disconnect
Prices diverge from value short-term but converge long-term.
In the short run, the market is a voting machine; in the long run, it's a weighing machine. Prices can diverge wildly from value, but eventually converge.
🏠 Everyday Analogy
📖 Core Interpretation
In Price vs Value Disconnect, Joel Greenblatt focuses on the gap between price and value. Returns come from paying less than what a business is worth, not from guessing short-term market moves.
💎 Key Insight：The voting-to-weighing machine transition is inevitable.
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❓ Why It Matters
Ignoring valuation turns even good companies into poor investments. Overpaying compresses future returns and leaves little margin when assumptions are wrong.
🎯 How to Practice
Estimate intrinsic value with conservative assumptions, set clear buy ranges, and act only when price offers a meaningful discount with acceptable downside.
⚠️ Common Pitfalls
Confusing a low price with true cheapness
Using one metric without business context
Overly optimistic assumptions that erase margin of safety
📚 Case Studies
1
American Express Recovery (2002)
Magic Formula ranked American Express highly after the tech bust when it was out of favor and trading at a low earnings yield.
✨ Outcome：Within several years, the stock delivered strong double‑digit annual returns as credit trends improved and valuation normalized.
2
Microsoft Post-Crisis Re-Rating (2009)
After the 2008 crisis, Microsoft screened well on return on capital and earnings yield, yet was viewed as a ‘value trap’ with slow growth.
✨ Outcome：Over the next five years, valuation multiples expanded and earnings grew, producing substantial outperformance versus the broader market.
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