A game theory model of regulatory response to insider trading

Continuous-Time Model of Insider Trading

Informed Options Trading prior to M&A Announcements: Insider Trading?∗

We investigate informed trading activity in equity options prior to the announcement of corporate mergers and acquisitions (M&A). For the target companies, we document pervasive directional options activity, consistent with strategies that would yield abnormal returns to investors with private information. This is demonstrated by positive abnormal trading volumes, excess implied volatility and ...

Strategic Insider Trading Equilibrium: A Filter Theory Approach

The continuous-time version of Kyle’s (1985) model of asset pricing with asymmetric information is studied, and generalized in various directions, i.e., by allowing time-varying liquidity trading, and by having weaker a priori assumptions on the model. This extension is made possible by the use of filtering theory. We derive the optimal trade for an insider and the corresponding price of the ri...

Insider Trading and Innovation

This paper assesses whether the enforcement of insider trading laws increases or decreases patent-based measures of technological innovation. Based on about 75,000 industry-countryyear observations across 94 economies from 1976 to 2006, we find evidence consistent with the view that enforcing insider trading laws spurs innovation—as measured by patent intensity, scope, impact, generality, and o...

Opportunistic insider trading☆

Article history: Received 22 June 2011 Accepted 23 July 2012 Available online 31 July 2012 This study proposes a simple framework to disentangle insiders' opportunistic trade from liquidity trade. An opportunistic trade occurswhen the probability of informed trading and the speed of convergence to market efficiency increase in a month of an insider transaction. Using Thailand Securities Exchang...