We study the effect of algorithmic trading (AT) on market quality between 2001 and 2011 in 42 equity markets around the world. We use exchange co-location service that increases AT as an exogenous instrument to draw causal inferences of AT on market quality. On average, AT improves liquidity and...

Theoretical models of limit order books populated with liquidity traders suggest a link between order aggressiveness, spreads and the cost of waiting for order execution. We directly test these models using an experimental setting where waiting time is important for traders, namely the...

This paper considers short sellers' activities when equity analysts are over-optimistic about a stock's future performance. We use a novel dataset of daily aggregated stock lending information for stocks short sold on the Australian Security Exchange (ASX) during the period of October 2005 to...