We propose a non-parametric procedure for estimating systemic co-jumps and independent idiosyncratic jumps, and study associated news reported in Factiva and Bloomberg for thirty five stock markets from 1988 to 2014. Our results suggest that it is important to distinguish between systemic...

We analyse all Mini Flash Crashes (or Flash Equity Failures) in the US equity markets in the four most volatile months during 2006-2011. In contrast to previous studies, we find that Mini Flash Crashes are the result of regulation framework and market fragmentation, in particular due to the...

We analyse all Mini Flash Crashes (or Flash Equity Failures) in the US equity markets in the four most volatile months during 2006-2011. In contrast to previous studies, we find that Mini Flash Crashes are the result of regulation framework and market fragmentation, in particular due to the...

This study documents a positive relationship between the option-implied risk-neutral skewness (RNS) of individual stock returns' distribution and future realized stock returns during the period 1996-2012. A strategy that is long the quintile portfolio with the highest RNS stocks and short the...