The Effect of Age on Portfolio Choices: Evidence Form an Italian Pension Fund

Abstract

Optimal Portfolio Theory prescribes that investors reduce their exposure to financial market risk as they get near to retirement. To assess the effect of ageing on portfolio choices, we study the case of an Italian defined contribution pension fund during the period 2002-08. We find that on average the willingness to hold risky assets does indeed significantly decrease with age, but we also document that inertial behaviour is quite widespread, and can be very costly.