The term “inside information” is key to both the EU insider trading prohibition and the European continuous disclosure requirement. Artt. 2-4 Market Abuse Directive (MAD) prevent market participants from trading on, disclosing, and making investment recommendations on the basis of inside...

The information content of stock prices is analysed without imposing strong restrictions on traders' preferences and the distribution of dividends. Noise in the information contained in equilibrium prices arises from endogenous asset supply, which offsets price movements due to informed trading....

The single auction equilibrium of Kyle's (1985) is studied, in which market makers are not fiduciaries. They have some market power which they utilize to set the price to their advantage, resulting in positive expected profits. This has several implications for the equilibrium, the most...

We study how the presence of short sellers affects the incentives of the insiders to trade on negative information. We show it induces insiders to sell more (shares from their existing stakes) and trade faster to preempt the potential competition from short sellers. An experiment and...

We examine corporate insider transactions around Sarbanes-Oxley §403 (SOX) regulatory regimes and subsequent Wall Street Journal (WSJ) media postings — and provide new evidence on the benefit/cost trade-off tension between private information transfer and stock trading costs. SOX increased...

We propose the Volume Coefficient of Variation (VCV), the ratio of the standard deviation to the mean of trading volume, as a new and easily computable measure of information asymmetry in security markets. We use a simple microstructure model to demonstrate that VCV is strictly increasing in the...

Many researchers have conducted experiments to study different aspects of insider trading. Experimental laboratory asset markets allow the researcher to control parameters that are impossible to control or even measure in empirical data (e.g., fundamental value of the asset, quality and quantity...

Short sellers actively exploit trading opportunities from insider sales. We argue that, in response to concern about potential order flow information leakage, insiders strategically disguise their order flows to escape trading competition. Our model predicts that, when short sellers are...