“…Following Guay (1999) and Guay (1999, 2002), we use the sensitivity of CEO's stock and option values to changes in stock price (delta) and the sensitivity of CEO's stock and option values to changes in stock return volatility (vega) as measures for incentives provided by managerial compensation and ownership. Based on these measures, Coles, Daniel and Naveen (2006) find that higher vega leads to more risk-taking activities by management, such as lower investment in property, plant, and equipment, higher book leverage, and market leverage. In contrast, higher delta leads to less risky financial policies such as a decrease in leverage and an increase in capital expenditures.…”