-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 …

with two regimes, and where households have generalized recursive smooth ambiguity preferences. The adopted class of … preferences permits a three-way separation of risk aversion, ambiguity aversion, and the attitude toward intertemporal … substitution. Ambiguity averse agents are ambiguous about the probability distribution of productivity growth. We show that in the …

This paper explicitly solves, in closed form, the optimal consumption and port folio 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. …

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 …

models featuring smooth ambiguity preferences. We rely on semi-nonparametric estimation of a flexible auxiliary model in our … pricing models with smooth ambiguity. Statistical model comparison shows that models with ambiguity, learning and time …