Portfolio Optimization under Correlation Constraint
19 Pages Posted: 13 Jan 2020
Date Written: December 23, 2019
Abstract
We consider the problem of portfolio optimization with a correlation constraint. The frame- work is the multiperiod stochastic financial market setting with one tradable stock, stochastic income and a non-tradable index. The correlation constraint is imposed on the portfolio and the non-tradable index at some benchmark time horizon. The goal is to maximize portofolio’s expected exponential utility subject to the correlation constraint. Two types of optimal portfolio strategies are considered: the subgame perfect and the precommitment ones. We find analytical expressions for the constrained subgame perfect (CSGP) and the constrained precommitment (CPC) portfolio strategies. Both these portfolio strategies yield significantly lower risk when compared to the unconstrained setting, at the cost of a small utility loss. The performance of the CSGP and CPC portfolio strategies is similar.
Keywords: portfolio optimization, correlation constraints
JEL Classification: C02, C63
Suggested Citation: Suggested Citation