This article analyzes intraday stock price and trading volume reactions to directors' dealings announcements in Germany and the United Kingdom from January 2007 to June 2010. The main findings show that prompt public disclosure of directors' dealings, as mandated by the EU Transparency...

Manipulation in the VIX settlement can cause significant losses to investors. Analysing high-frequency data, we present indications of VIX manipulation accelerating since 2017. Deviations have an upward direction and average at around 6%. Specific effects accompany settlement days. The put/call...