Does borrowing diversity (i.e., borrowing via a larger number of debt types) affect how firms respond to an exogenous credit supply shock? To answer this question I use the recent 2007-2009 credit crisis as a negative exogenous credit supply shock to U.S. non-financial companies. Applying a...

A short squeeze is triggered if there is pressure on short sellers to cover their positions because of a sharp price increase or a recall of borrowed shares. This drives short sellers to close their positions early. We find that stock-day short-squeeze events are rare and short-lived. However,...

Black and Scholes (1973) implied volatilities tend to be systematically related to the option's exercise price and time to expiration. Derman and Kani (1994), Dupire (1994), and Rubinstein (1994) attribute this behavior to the fact that the Black-Scholes constant volatility assumption is...