We analyze the effect of ambiguous loss probabilities on competitive insurance markets with asymmetric information. We characterize equilibria under actuarially fair pricing with preferences that are second-order ambiguity averse (have smooth indifference curves). We also show existence of...

The detection of unbiased abnormal returns in the classic event study depends on the validity of the assumption that the parameters of the return generating process remain constant throughout the sample period. However, given the substantial amount of evidence to support the fact that the market...