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Implications of Anticipated Regret and Endogenous Beliefs for Equilibrium Asset Prices: A Theoretical Framework

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    Abstract

    This paper builds upon Suryanarayanan (2006a) and further investigates the implications of the model of Anticipated Regret and endogenous beliefs based on the Savage (1951) Minmax Regret Criterion for equilibrium asset pricing. A decision maker chooses an action with state contingent consequences but cannot precisely assess the true probability distribution of the state. She distrusts her prior about the true distribution and surrounds it with a set of alternative but plausible probability distributions. The decision maker minimizes the worst expected regret over all plausible probability distributions and alternative actions, where regret is the loss experienced when the decision maker compares an action to a counterfactual feasible alternative for a given realization of the state. We first study the Merton portfolio problem and illustrate the effects of anticipated regret on the sensitivity of portfolio rules to asset returns.We then embed the model in a version of the Lucas (1978) economy. We characterize asset prices with distorted Euler equations and analyze the implications for the volatility puzzles and Euler pricing errors puzzles.

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    Bibliographic Info

    Paper provided by Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy in its series CSEF Working Papers with number 162.

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    Date of creation: 01 Sep 2006
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    Handle: RePEc:sef:csefwp:162

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