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Roni Israelov – High Frequency Factors, the Volatility Risk Premium, and Re-Thinking Financial Planning (S6E4)

Flirting with Models

CHAPTER

How Many Stocks Should You Own?

You recently published a piece titled, How Many Stocks Should You Own? It was a pushback on the common idea that the marginal benefit of diversification rapidly decays after 20 or 30 stocks. Once you get beyond that portfolio volatility tends to die down,. Your pushback in this piece was that those numbers are too low and potentially off by an entire order of magnitude.

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