This paper examines a continuous-time intertemporal consumption and portfolio choice problem foran ambiguity-averse investor with multiple priors when the expected return of a risky asset isunobservable and follows a hidden Markov chain. The investor’s beliefs over investmentopportunities are...

This paper examines a continuous-time intertemporal consumption and portfoliochoice problem for an investor with Duffie and Epstein (1992a)’s recursive preferenceswho worries about model misspecification (model uncertainty) and wants toseek robust decision rules. The expected excess return of...