This paper explicitly solves, in closed form, the optimal consumption and portfolio choice for an ambiguity averse … martingale method to solve the dynamic optimization problem in continuous time. I find that ambiguity can decrease the optimal … of hedging demand in the optimal portfolio allocation. In addition, ambiguity also increases riskless savings. …

to assess if this continues to be true in the presence of ambiguity. Adopting robust control and perturbation theory … techniques, we study the problem of a long-horizon investor with recursive preferences that faces ambiguity about the stochastic … processes that generate the investment opportunity set. We find that ambiguity impacts portfolio choice, with the relevant …

only possible if all discounted net trades of the equilibrium allocation are mean ambiguity-free. …

-Debreu equilibria only if the values of net trades are ambiguity-free in the mean. Without aggregate uncertainty, inefficiencies arise …

We develop a theory of optimal stopping problems under ambiguity in continuous time. Using results from (backward … from the agent's ambiguity aversion. We show how to use these general results for search problems and American Options. …

We consider optimal stopping problems for ambiguity averse decision makers with multiple priors. In general, backward …

This paper examines a continuous-time intertemporal consumption and portfolio choice problem foran ambiguity …

We develop a theory of optimal stopping problems under ambiguity in continuous time. Using results from (backward … from the agent's ambiguity aversion. We show how to use these general results for search problems and American Options. …