We analyze the impact of risk and ambiguity aversion using a lifecycle recursive utility model. Both risk and ambiguity aversion are shown to reduce annuity demand and enhance bond holdings. We obtain this result using an intertemporal framework in which we can vary both risk and ambiguity...

This letter applies Siniscalchi (2009)’s Vector Expected Utility to introduce ambiguity aversion into factor models for assets’ returns. The resulting criterion is tractable and its adjustment for ambiguity vanishes as initial wealth increases. Finally, it can be related to shrinkage...