Pervasive herding may cause homogenous trading patterns, both within and across stocks and thus may impact upon an important aspect of the market microstructure – liquidity. Potentially, herding could simultaneously affect the liquidity of both individual stocks and that of the market. For...

We investigate the role of retail traders in comovement in return and liquidity. We use the Robinhood data to compute a proxy of retail trading activity. Results show that retail trading activity is associated with a decrease in both comovements in return and liquidity. The effects on comovement...

Using the split-share structure reform in China as a quasi-natural experiment, we examine the effect of stock liquidity on investment efficiency. Consistent with feedback and incentive theories, investment efficiency increases after the reform but only for under-investing firms. Higher stock...

We show that option-implied jump tail risk estimated prior to earnings announcements strongly predicts post-earnings risk-adjusted abnormal stock returns. The predictive power of implied jump tail risk is particularly strong on extreme abnormal stock returns whose absolute values exceed 10%. The...

We study the role of firm ambiguity on stock price reaction to earnings announcements. By using the firm's variance risk premium (VRP) prior to earnings news arrivals as a proxy for firm-level information ambiguity, we provide evidence that this “micro” form of ambiguity has a significant...

Employing a broad sample of US firms over the period 1962 to 2009, we provide evidence of a liquidity risk impact on the fundamental earnings-returns relation. Specifically, we document that current liquidity risk has a positive moderating effect on the relation between current returns and next...

We investigate the role of retail traders in comovement in return and liquidity. We use the Robinhood data to compute a proxy of retail trading activity. Our results show that retail trading activity is associated with a decrease in both comovements in return and liquidity. The effects on...

This paper examines the equity market reaction to consumer sentiment in the context of the sentiment index issued by the Melbourne Institute of Applied Economics and Social Research. Unlike the Michigan index in the US, which is announced in phases, this index is announced once per month, which...

We argue that arbitrageurs will strategically limit their initial investment in an arbitrage opportunity in anticipation of further mispricing caused by the deepening of noise traders' misperceptions. Such ‘noise momentum' is an important determinant of the overall arbitrage process. We design...