FINITE DIFFERENCE APPROXIMATION FOR PRICING THE AMERICAN LOOKBACK OPTION

• 来源期刊: 计算数学（英文版）
• 关键词: American lookback options Finite difference approximation Stability and convergence Error estimates
• 年，卷（期）: 2009,（4）
• 页码范围: 484-494
• 页数: 11页
• 语种: 英文
• DOI: 10.4208/jcm.2009.27.4.015

摘要

In this paper we are concerned with the pricing of lookback options with American type constrains. Based on the differential linear complementary formula associated with the pricing problem, an implicit difference scheme is constructed and analyzed. We show that there exists a unique difference solution which is unconditionally stable. Using the notion of viscosity solutions, we also prove that the finite difference solution converges uniformly to the viscosity solution of the continuous problem. Furthermore, by means of the variational inequality analysis method, the (O)(△t+△x2)-order error estimate is derived in the discrete L2-norm provided that the continuous problem is sufficiently regular. In addition, a numerical example is provided to illustrate the theoretical results.Mathematics subject classification: 65M12, 65M06, 91B28.