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Ambiguity, Risk, and Asset Returns in Continuous Time

Author

Listed:
  • Zengjing Chen

    () (Shandong University, Jinan, China)

  • Larry Epstein

    () (University of Rochester, Rochester, NY U.S.A)

Abstract

Models of utility in stochastic continuous-time settings typically assume that beliefs are represented by a probability measure, hence ruling out a priori any concern with ambiguity. This paper formulates a continuous-time intertemporal version of multiple-priors utility, where aversion to ambiguity is admissible. In a representative agent asset market setting, the model delivers restrictions on excess returns that admit interpretations reflecting a premium for risk and a separate premium for ambiguity. Copyright The Econometric Society 2002.

Suggested Citation

  • Zengjing Chen & Larry Epstein, 2002. "Ambiguity, Risk, and Asset Returns in Continuous Time," Econometrica, Econometric Society, vol. 70(4), pages 1403-1443, July.
  • Handle: RePEc:ecm:emetrp:v:70:y:2002:i:4:p:1403-1443
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    JEL classification:

    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty
    • D9 - Microeconomics - - Micro-Based Behavioral Economics
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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