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On Convergence to the Exponential Utility Problem with Jumps 

Author: Christina R. Niethammer a
Affiliation:   a Department of Mathematics and Statistics, University of Konstanz, Konstanz, Germany
DOI: 10.1080/07362990701673146
Publication Frequency: 6 issues per year
Published in: journal Stochastic Analysis and Applications, Volume 26, Issue 1 January 2008 , pages 169 - 196
Formats available: HTML (English) : PDF (English)
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Abstract

We derive an explicit portfolio for the exponential utility maximization problem via an approximation approach for exponential Leacutevy processes (mainly discussing - e-x (exponential problem) and LSAA_A_267164_O_XML_IMAGES\LSAA_A_267164_O_ILM0001.gif (2m-th problem)). A result by Jeanblanc et al. (Annals of Applied Probability, 2007) is applied: The convergence of q-optimal martingale measures to the minimal entropy martingale measure. Except for conditions on the existence of the q-optimal measures, we replace technical assumptions by minor integrability conditions. We obtain convergence of the portfolios of the 2m-th to the exponential problem. The influence of jump intensity and jump size distribution upon the portfolio, in comparison to the continuous case, is discussed.
Keywords: Exponential utility function; Leacutevy processes; Minimal entropy martingale measure; q-Optimal martingale measure; Stochastic duality
2000 Mathematics Subject Classification: 91B28; 60H10; 91B16; 60G51; 60J75
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