Optimal investment and consumption in a Black.Scholes market with Lévy-driven stochastic coefficients

Citation
Delong, .ukasz et Klüppelberg, Claudia, Optimal investment and consumption in a Black.Scholes market with Lévy-driven stochastic coefficients, Annals of applied probability , 18(3), 2008, pp. 879-908
ISSN journal
10505164
Volume
18
Issue
3
Year of publication
2008
Pages
879 - 908
Database
ACNP
SICI code
Abstract
n this paper, we investigate an optimal investment and consumption problem for an investor who trades in a Black.Scholes financial market with stochastic coefficients driven by a non-Gaussian Ornstein.Uhlenbeck process. We assume that an agent makes investment and consumption decisions based on a power utility function. By applying the usual separation method in the variables, we are faced with the problem of solving a nonlinear (semilinear) first-order partial integro-differential equation. A candidate solution is derived via the Feynman.Kac representation. By using the properties of an operator defined in a suitable function space, we prove uniqueness and smoothness of the solution. Optimality is verified by applying a classical verification theorem.