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We introduce Implied Volatility Duration (IVD) as a new measure for the timing of uncertainty resolution, with a high IVD corresponding to late resolution. Portfolio sorts on a large cross-section of stocks indicate that investors demand on average more than five percent return per year as a compensation for a late resolution of uncertainty. In a general equilibrium model, we show that 'late' stocks can only have higher expected returns than 'early' stocks, if the investor exhibits a preference for early resolution of uncertainty. Our empirical analysis thus provides a purely market-based assessment of the timing preferences of the marginal investor.

I document a new stylized fact: The higher the degree of institutional ownership (IO) in a portfolio, the more time-varying expected returns rather than changes in expected cash flows drive changes in its valuation. Empirical evidence suggests that institutions’ time-varying sensitivity to the risk of holding stocks translates into time-varying expected returns on high-IO stocks. In my model, imperfect risk sharing between different types of investors generates cross-sectional differences in return predictability based on ownership, even among a priori identical stocks. My findings suggest an economic rationale for weak return predictability of small stocks and predictability reversals of stocks and real estate investment trusts.

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