Correspondence between Lifetime Minimum Wealth and Utility of Consumption
Optimization and Control
2008-12-02 v1 Probability
General Finance
Abstract
We establish when the two problems of minimizing a function of lifetime minimum wealth and of maximizing utility of lifetime consumption result in the same optimal investment strategy on a given open interval in wealth space. To answer this question, we equate the two investment strategies and show that if the individual consumes at the same rate in both problems -- the consumption rate is a control in the problem of maximizing utility -- then the investment strategies are equal only when the consumption function is linear in wealth on , a rather surprising result. It, then, follows that the corresponding investment strategy is also linear in wealth and the implied utility function exhibits hyperbolic absolute risk aversion.
Keywords
Cite
@article{arxiv.math/0703820,
title = {Correspondence between Lifetime Minimum Wealth and Utility of Consumption},
author = {Erhan Bayraktar and Virginia R. Young},
journal= {arXiv preprint arXiv:math/0703820},
year = {2008}
}