A maximum principle for relaxed stochastic control of linear SDEs with application to bond portfolio optimization

A maximum principle for relaxed stochastic control of linear SDEs with application to bond portfolio optimization

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Article ID: iaor20107710
Volume: 72
Issue: 2
Start Page Number: 273
End Page Number: 310
Publication Date: Oct 2010
Journal: Mathematical Methods of Operations Research
Authors: ,
Keywords: financial
Abstract:

We study relaxed stochastic control problems where the state equation is a one dimensional linear stochastic differential equation with random and unbounded coefficients. The two main results are existence of an optimal relaxed control and necessary conditions for optimality in the form of a relaxed maximum principle. The main motivation is an optimal bond portfolio problem in a market where there exists a continuum of bonds and the portfolio weights are modeled as measure-valued processes on the set of times to maturity.

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