We provide experimental evidence that relaxing margin restrictions to allow more short selling can exacerbate overpricing, even though it reduces equilibrium price levels. This is because smart-money traders initially profit more by front-running optimistic investor sentiment than by...

We report the results of three experiments based on the model of <link rid="b14">Hong and Stein (1999)</link>. Consistent with the model, the results show that when informed traders do not observe prices, uninformed traders generate long-term price reversals by engaging in momentum trade. However, when informed...