arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0710.0850math.PRstat.AP
收藏

多资产路径相关期权定价的蒙特卡罗方法和路径生成技术

Monte Carlo Methods and Path-Generation techniques for Pricing Multi-asset Path-dependent Options

Piergiacomo Sabino

摘要:

本文利用模拟方法研究了一篮子标的资产上路径依赖期权的定价问题。作为一个例子,我们使用亚式期权开展我们的研究。亚式期权是一种衍生品合约,其基础变量是在一段时间内抽样的给定资产的平均价格。由于这种结构,亚洲期权表现出较低的波动性,因此比标准的欧洲期权便宜。本文综述了近年来在Black-Scholes模型下用蒙特卡罗模拟方法对亚式期权进行定价时为提高效率所做的一些改进。我们分析了标的资产收益率波动率为常数和随时间变化的动态变化。本文比较了标准蒙特卡罗方法(MC)和分层拉丁超立方抽样(LHS)的精度。特别是,我们讨论了使用低差异序列,也被称为拟蒙特卡罗方法(QMC),这些序列的随机化版本,被称为随机拟蒙特卡罗方法(RQMC)。后者已被证明是一个有用的方差减少技术的问题,高达20个维度和非常高的维度。此外,我们提出并测试了一种新的路径生成方法的基础上克罗内克积近似(KPA)的情况下,随时间变化的挥发。事实证明,KPA是一种快速生成技术,可以降低仿真过程的计算成本。

英文摘要:

We consider the problem of pricing path-dependent options on a basket of underlying assets using simulations. As an example we develop our studies using Asian options. Asian options are derivative contracts in which the underlying variable is the average price of given assets sampled over a period of time. Due to this structure, Asian options display a lower volatility and are therefore cheaper than their standard European counterparts. This paper is a survey of some recent enhancements to improve efficiency when pricing Asian options by Monte Carlo simulation in the Black-Scholes model. We analyze the dynamics with constant and time-dependent volatilities of the underlying asset returns. We present a comparison between the precision of the standard Monte Carlo method (MC) and the stratified Latin Hypercube Sampling (LHS). In particular, we discuss the use of low-discrepancy sequences, also known as Quasi-Monte Carlo method (QMC), and a randomized version of these sequences, known as Randomized Quasi Monte Carlo (RQMC). The latter has proven to be a useful variance reduction technique for both problems of up to 20 dimensions and for very high dimensions. Moreover, we present and test a new path generation approach based on a Kronecker product approximation (KPA) in the case of time-dependent volatilities. KPA proves to be a fast generation technique and reduces the computational cost of the simulation procedure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑