The academic literature generally concludes that the Black-Scholes model overstates the value of employee stock options (ESOs). In particular, because ESOs cannot be traded, employee risk aversion often elicits premature exercise. As a result, the ESO is less valuable than a traded option. An...

We examine the riskless box spread trading strategy before and after the 1987 Market Crash using intraday data for Samp;P 500 Index (SPX) options. We find that the Crash had a significant impact on trading profitability. Before the Crash, apparently profitable trading opportunities were rare and...

In the United States, the lowest interest rate cap on small-dollar installment loans 17 percent is in Arkansas. No small-dollar installment lenders operate within Arkansas, while they do in all six states bordering Arkansas providing a natural experiment to examine the effects of a binding...

Hallerbach (2004) derives an approximation formula to compute a Black-Scholes implied volatility. This formula is equivalent to equation (7) in Corrado and Miller (1996a), with the substitution of a geometric average of stock and strike prices in place of an arithmetic average. Ceteris paribus...

This case is based on actual events from one of the author’s experiences as a U.S. Air Force Lieutenant, deployed to Kuwait in support of Operation ENDURING FREEDOM (Afghanistan Theater) and IRAQI FREEDOM (Iraq Theater). This case is about an ontological approach to leadership development....