期刊
COMMUNICATIONS IN MATHEMATICAL SCIENCES
卷 14, 期 7, 页码 1947-1962出版社
INT PRESS BOSTON, INC
DOI: 10.4310/CMS.2016.v14.n7.a8
关键词
Option replication; inhomogeneous rebalancing; liquidity risk; illiquidity
We introduce a model of liquidity risk through a stochastic supply curve for price taking traders. The supply curve gives the actual execution cost investors face in trading assets. We use the solutions to the modified Black-Scholes type PDE and obtain the delta-hedging strategies. We then show the replicating portfolio including liquidity costs converges to the payoff of the option. We demonstrate the replication error of discrete-time trading strategy decreases with inhomogeneous rebalancing times, and investigate an optimal positioning of them.
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