The study constructs a measure indicator to examine the association between the fad investing behavior and the performance of IPOs. Our results show that, although hot issue IPOs have higher initial returns, those stocks suffer long-term underperfrmances. In contrast, IPOs with negative investing sentiments may turn to be profitable for long-term holding. We further explore the reason why IPOs are subject to fads in early aftermarket trading and find that market timing and allotment rate have significant effect on investors fad behavior. In addition, excessive information asymmetry in IPOs market may also result in overvaluation and lead to fad behavior.