Stochastic Control for Imperfect Market Models

I. Kharroubi

The objective of this course is to present the study of some stochastic control problems that model market imperfections.

The first chapter deals with the study of investment problems under portfolio constraints. A duality approach is then used to solve this problem.

The second chapter focuses on sequential control problems (switching and impulse control). This class of models is important since it allows us to represent the phenomena related to liquidity problems on the markets. An example of an explicit solution is given in dimension 1 for optimal switching.

Finally, the last chapter presents the singular stochastic control problem. An application is then given for the optimal investment problem in the presence of transaction costs and for the optimal dividend distribution problem.


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