The well-documented negative association between idiosyncratic volatility (IV) and stock returns is puzzling if investors are risk-averse. We show that this anomaly is also prominent in the Chinese stock market. We attempt to explain the IV anomaly by using the key theories suggested by the...

This study examines the impact of corporate earnings announcements on trading activity and speed of price adjustment, analyzing algorithmic and non–algorithmic trades during the immediate period pre– and post– corporate earnings announcements. We confirm that algorithms react faster and...

The findings in this paper confirm that there is an economic and statistic negative association between High Frequency Trading [HFT] activity and price volatility. In the ultra-high frequency intervals around HFT there is a slight increase in volatility. This paper also confirms that large high...

This paper aims to investigate if derivatives instruments act as a substitute for short sales during periods of restriction imposed on short selling in the cash market for stocks. Contrasting the trading activity in derivative instruments to the underlying stocks, we find no evidence of a...

We study the intra-day impact of algorithmic trading on the futures market to increase our understanding of algorithmic trading and its role in the price formation process. First, we find that algorithmic trading provides liquidity when the spread is wide and that algorithms enter the market at...