The link between informed trading and the bid-ask spread has been the focus of abundant literature and some authors … feared that a large amount of informed trading might lead to shutdown of markets. We explore this issue using data from the … Czech Republic. Our estimates confirm that the share of informed trading and its variability is indeed high relative to …

The link between informed trading and the bid-ask spread has been the focus of abundant literature and some authors … feared that a large amount of informed trading might lead to shutdown of markets. We explore this issue using data from the … Czech Republic. Our estimates confirm that the share of informed trading and its variability is indeed high relative to …

This appendix extends the empirical results in Chesney, Crameri, and Mancini (2011). Informed trading activities on put … of Bear Stearns Corporation and public announcements of large losses/writedowns are preceded by informed trading …

We develop statistical methods to detect informed trading in options markets. We apply these methods to 31 companies … from various sectors over 14 years analyzing approximately 9.6 million option prices. We find that option informed trading …