A prominent approach to modelling ambiguity about stock return distribution is to assume that investors have multiple priors about the distribution and these priors are distributed according to a certain second-order distribution. Realistically, investors may also have multiple priors about the...

Ambiguity-seeking behavior is universally disregarded in a large theoretical finance literature with smooth ambiguity preferences. This paper questions the three rationales for this practice. First, smooth ambiguity models are not ill-defined under ambiguity-seeking. Second, a representative...