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LIQUIDATION OF AN INDIVISIBLE ASSET WITH INDEPENDENT INVESTMENT
Author(s) -
Fabre Emilie,
Royer Guillaume,
Touzi Nizar
Publication year - 2018
Publication title -
mathematical finance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.98
H-Index - 81
eISSN - 1467-9965
pISSN - 0960-1627
DOI - 10.1111/mafi.12127
Subject(s) - bellman equation , optimal stopping , martingale (probability theory) , stochastic control , mathematical economics , investment strategy , economics , dynamic programming , asset (computer security) , investment (military) , stochastic differential equation , optimal control , mathematical optimization , mathematics , microeconomics , computer science , profit (economics) , computer security , politics , political science , law
We provide an extension of the explicit solution of a mixed optimal stopping–optimal stochastic control problem introduced by Henderson and Hobson. The problem examines whether the optimal investment problem on a local martingale financial market is affected by the optimal liquidation of an independent indivisible asset. The indivisible asset process is defined by a homogeneous scalar stochastic differential equation, and the investor's preferences are defined by a general expected utility function. The value function is obtained in explicit form, and we prove the existence of an optimal stopping–investment strategy characterized as the limit of an explicit maximizing strategy. Our approach is based on the standard dynamic programming approach.