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Overconfidence, Under-Reaction, and Warren Buffett’s Investments

This Week in Intelligent Investing

CHAPTER

The Problem With Applying Fama French Models to Explain Buffett

The authors of a recent paper on Berkshire Hathaway say the company is under-diversified. They argue that this gives Buffett an information advantage, but it's limited to his circle of competence. John MacIntosh: There are some really interesting takeaways, but there's a fundamental problem with applying Fama French models to try to explain Buffett.MacIntosh: The academic style paper trying to pound a square peg into a round hole was bizarre.

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