Optimal Consumption and Investment for Exponential Utility Function

We investigate an optimal consumption and investment problem for Black-Scholes type financial market on the whole investment interval [0, T]. We formulate various utility maximization problem, which can be solved explicitly. The method of solution uses the convex dual function (Legendre transform) of the utility function. Related to this concept, we introduce and study the convex dual of the value function for our problem.

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  • [1] Karatzas, I. and Shreve, S.E., Methods of Mathematical Finance. Springer, Berlin, 1998.
  • [2] Korn, R., Optimal portfolios. World Scientific, Singapore, 1997.
  • [3] Kluppelberg, C. and Pergamenchtchikov, S., Optimal consumption and investment with bounded downside risk for power utility functions. Optimality and Risk - Modern Trends in Mathematical Finance. (2010), 133-170.
  • [4] Rockafellar, R.T., Convex Analysis. Princeton University Press, Princeton, NJ 1970.
  • [5] Ekeland, I. and Temam, R., Convex Analysis and Variational Problems. North Holland, Amsterdam and American Elsevier, New York (1976).
  • [6] Xu, G.L., A duality method for optimal consumption and investment under short-selling prohibition. Doctoral dissertation, Department of Mathematics, Carnegie-Mellon University, 1990.