We consider Kyle's market order model of insider trading with multiple informed traders and show: if a linear equilibrium exists for two different numbers of informed traders, asset payoff and noise trading are independent and have finite second moments, then these random variables are normally...

We examine the welfare costs of informed trade in a new sequential trade model with elastic uninformed traders. Welfare losses occur when the liquidity costs of executing a trade exceed the potential gains from the trade. With long-lived private information, more informed traders lead to better...

This paper examines how the probability of informed trading (PIN), a measure of information-based trading risk developed by Easley et al (1996), affects the speed at which stock prices adjust to market-wide information. We find that in all but the least active stock portfolios, prices of low PIN...

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 a new approach to measuring informed trading in individual securities based on a portfolio optimization model for investors facing information and liquidity shocks. These shocks induce speculative and liquidity-motivated order flow, taking into account the price impact of trading. The...

This dissertation consists of three essays examining the behavior of informed traders in financial markets and how they affect asset pricing. It examines informed traders' role in shaping securities prices in three ways. It examines whether on a macro and micro basis insider traders move prices...

We train a machine learning method on a class of informed trades to develop a new measure of informed trading, the Informed Trading Intensity (``ITI''). ITI increases before earnings, M&A, and news announcements, and has implications for return reversal and asset pricing. ITI is effective...

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....