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arXiv: 1102.1186

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v1 (2011-02-06)

v2 (2011-12-09)

Optimal consumption and investment for markets with random coefficients.

Berdjane Belkacem 1, Serguei Pergamenchtchikov 2

(2011-01-30)

We consider an optimal investment and consumption problem for a Black-Scholes financial market with stochastic coefficients driven by a diffusion process. We assume that an agent makes consumption and investment decisions based on CRRA utility functions. The dynamical programming approach leads to an investigation of the Hamilton Jacobi Bellman (HJB) equation which is a highly non linear partial differential equation (PDE) of the second oder. By using the Feynman - Kac representation we prove uniqueness and smoothness of the solution. Moreover, we study the optimal convergence rate of the iterative numerical schemes for both the value function and the optimal portfolio. We show, that in this case, the optimal convergence rate is super geometrical, i.e. is more rapid than any geometrical one. We apply our results to a stochastic volatility financial market.

1:	department of mathematics, University of Mouloud Mammeri
	University of Mouloud Mammeri
2:	Laboratoire de Mathématiques Raphaël Salem (LMRS)
	CNRS : UMR6085 – Université de Rouen

Subject

:

Mathematics/Probability

Keyword(s): Black-Scholes market – Stochastic volatility – Optimal consumption and Investment – Hamilton-Jacobi-Bellman equation – Banach fixed point theorem – Feynman - Kac formula.

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From: Serguei Pergamenchtchikov <>

Submitted on: Sunday, 6 February 2011 19:12:49

Updated on: Wednesday, 16 November 2011 17:08:06