Prior studies on algorithmic trading (AT) have mostly focused on a single exchange. The authors use a public dataset provided by the Securities and Exchange Commission (SEC) covering all major U.S. exchanges to study the impact of AT and its fragmentation on market liquidity. Using a proxy of AT...

We examine short sellers' after-hours trading (AHT) following quarterly earnings announcements released outside of the normal trading hours. Our innovation is to use the actual short trades immediately after the announcements. We find that on these earnings announcement days, there is...

We examine the impact of the corporate information environment on short selling by testing the relationship between short interest and accounting conservatism. Short interest, the total number of shares shorted and not yet covered, is a widely used measure of short selling activity. Accounting...