The characterization of the American put option price is still an open issue. From the beginning of the nineties there exists a non-closed formula for this price but nontrivial numerical computations are required to solve it. Strong efforts have been made to propose computational efficient...

In this paper we address a problem arising in risk management; namely the study of price variations of different contingent claims in the Black-Scholes model due to anticipating future events. The method we propose to use is an extension of the classical Vega index, i.e. the price derivative...

In this paper we extend Merton's (1975) classic stochastic version of the Ramsey model by allowing the government to control the expected growth rate of the labor supply. We characterize the solution to this control problem for general time-separable preferences, and derive an analytical...