"I study battles between short sellers and firms. Firms use a variety of methods to impede short selling, including legal threats, investigations, lawsuits, and various technical actions intended to create a short squeeze. These actions create short sale constraints. Consistent with the...

On average, stock prices rise around scheduled earnings announcement dates. We show that this earnings announcement premium is large, robust, and strongly related to the fact that volume surges around announcement dates. Stocks with high past announcement period volume earn the highest...

We test whether the impact of financial constraints on firm value is observable in assetquot; returns. We form portfolios of firms based on observable characteristics related to financialquot; constraints, and test for common covariation in the stock returns of these firms. Using severalquot;...