Building on recent developments in behavioral asset pricing, we develop a model in which an increase in the dispersion of investor beliefs under short-selling constraints predicts a "bubble," or a rise in a stock's price above its fundamental value. Our model predicts that managers respond to...

Using data from bank holding company regulatory reports, we examine the relationshipbetween stock repurchases and financial performance for a large sample of bank holding companies over the years 1987 to 1998. The primary result is that higher levels of repurchases in one year are associated...

Does the presence of arbitrageurs decrease equilibrium asset price volatility? I study an economy with arbitrageurs, informed investors, and noise traders. Arbitrageurs face a trade-off between arbitrage and inference: they would like to buy assets in response to temporary price declines (the...