Economy – Quantitative Finance – Portfolio Management
Scientific paper
2009-12-09
Math. Financ. Econ., 3(3):139-159, 2010
Economy
Quantitative Finance
Portfolio Management
24 pages, forthcoming in 'Mathematics and Financial Economics'
Scientific paper
10.1007/s11579-010-0031-0
We study the utility maximization problem for power utility random fields in a semimartingale financial market, with and without intermediate consumption. The notion of an opportunity process is introduced as a reduced form of the value process of the resulting stochastic control problem. We show how the opportunity process describes the key objects: optimal strategy, value function, and dual problem. The results are applied to obtain monotonicity properties of the optimal consumption.
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