This study examines short selling in stocks of firms that reveal partial earnings-related information prior to their eventual earnings announcements (EA). By decomposing short selling into two components where the first corresponds to the final partial earnings disclosure and the second captures...

The properties of information, including "information uncertainty", can be understood only Bayesianly. Common formulations that define information uncertainty in terms of just statistical "precision" (i.e. sampling variance), or any one estimator characteristic (e.g. bias), are inadequate for...

During financial crises, financial market regulators often restrict short-selling to support prices and curb volatility. However, evidence suggests that short-selling bans during the turmoil in financial markets in 2007--2009 failed to achieve regulators' goals. We analyze a model of costly...

We develop a model of optimal dissemination of private information by a short- sighted raider within a market for a risky asset. Because the raider is risk-averse and atomistic, her trades cannot directly affect prices. In addition, because she is short- sighted she needs to liquidate her...

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...

Sudden big price changes are followed by periods of high and persistent volatility. I develop a tractable dynamic rational expectations model consistent with this observation. An infinity of agents possess dispersed information about future dividends and trade in centralized markets. Information...

In a multi-asset market where agents have both payoff and supply signals, the rational expectations equilibria with partially revealing prices are characterized by an algebraic Riccati equation. The equation states that asset prices’ payoff informativeness equals the aggregation of...