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Special Semester on Stochastics with Emphasis on Finance
Linz, September 2008 - December 2008
Presentation: Optimal consumption investment strategy under drawdown constraint

Workshop: Optimization and Optimal Control

Time: Thu, October 23, 2008, 10:50-11:40

Speaker: Romuald Elie

Abstract

We consider the optimal consumption-investment problem under the drawdown constraint, i. e. the wealth process never falls below a fixed fraction of its running maximum. We assume that the risky asset is driven by the constant coefficients Black and Scholes model. For a general class of utility functions and infinite horizon, we provide the value function in explicit form, and we derive closed-form expressions for the optimal consumption and investment strategy. On a finite time horizon, we provide a viscosity characterization of the solution. Part of this presentation is a joint work with Nizar Touzi.

Presentation slides (pdf, 998 KB)

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