Time-Varying Margin Requirements and Optimal Portfolio Choice
47 Pages Posted: 15 Mar 2012 Last revised: 16 Dec 2016
Date Written: January 29, 2014
Abstract
This paper studies the optimal consumption and portfolio problem of an investor with recursive preferences who is subject to time-varying margin requirements. The level of the requirements at each moment is determined by contemporaneous volatility of returns, which is stochastic and may have jumps. I show that nonstandard hedging demand produced by margin requirements increases with their persistence and volatility. However, for realistic values of parameters the hedging demand is small even in the presence of jumps and contemporaneous jumps in prices have a much stronger effect on optimal portfolio than jumps in constraints.
Keywords: portfolio problem, margin requirements, hedging demand, jumps
JEL Classification: G11, G12
Suggested Citation: Suggested Citation
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