运用Matlab基于LSM方法对羹式期权定价的新探究

传统期权定价方法是通过主观假定初始价格、执行价格、期限、波动率、无风险利率等条件来对期权进行定价,很少联系实际的期权市场报价对期权进行定价。本文根据股票期权市场报价,通过Matlab快速方便地求解出隐含的波动率和无风险利率,并在此基础上运用Matlab基于最／bZ．乘蒙特卡洛模拟（LSM）方法对该股票的美式期权进行定价。本文揭示了如何根据期权市场报价实现隐含波动率和无风险利率的求解,进而结合LSM方法对美式期权进行定价的一种新方法。此外,本文对LSM方法的改进技术也进行了探讨。     

对美式期权定价的蒙特卡洛模拟方法的研究

针对美式期权的定价问题,把蒙特卡洛模拟法与二叉树法、有限差分法二种数值方法进行比较,得出它的优缺点;介绍蒙特卡洛模拟法的基本思想,并以单个标的资产美式看跌期权为例说明其具体算法步骤。     

基于三叉树模型的美式期权定价问题研究

本文对三叉树模型的推导及美式期权进行了详细介绍,相对于二叉树模型而言,三叉树模型用更多的状态分布来逼近标的物价格走势的连续分布,相比与二叉树而言,其准确性会更高。后半部分运用数值计算方法对于具体案例运用三叉树模型进行定价,得出相关结果。     

论有限元法定价永久美式看跌期权

金融衍生证券价格计算通常有两种方法:1)通过Monte Carlo模拟,产生原生资产在风险中性测度下的路径,然后估计贴现支付的风险中性期望值;2)数值方法,求解偏微分方程。本研究采用第二种方法。对基于Heston模型的永久美式看跌期权进行定价,在使用有限元方法时,引入惩罚项将变分不等式转换为等式,设计了逐次迭代法求出数值解,并以Numerix Across Asset Package作为基准进行校验。     

多维美式勒式期权定价研究

本文运用最小二乘蒙特卡洛模拟方法,对多维美式勒式期权的定价问题进行了研究,并得到了在二维情况下美式勒式期权最优执行边界的示意图。从期权定价的领域来看,本文既是对多维期权研究的补充,也是对一维美式勒式期权研究的扩展。     

上证综指美式期权定价实证研究

Fischer Black、Myron Scholes和Robert Merton在1973年建立了Black-Scholes模型,该模型为股票期权定价提供了理论依据.本文在该模型的基础上,运用连续时间美式期权定价模型为上证综指美式期权进行定价实证研究.     

美式看涨期权蒙特卡洛模拟定价和二叉树定价方法的比较

本文以Microsoft发行的股票期权作为样本,使用Matlab和Excel作为实现手段,运用了二叉树方法以及蒙特卡洛模拟法对股票期权进行了理论定价并将两种方法的定价结果同实际的期权价格进行了比较.     

基于受约束正则方法的奇异期权定价

本文研究一种对奇异期权定价的非参数方法,避开了传统期权定价方法对资产价格分布假设和波动率假设等难题,并且不同于其他非参数方法从期权历史交易价格出发为新期权定价,本文直接用标的资产的价格为期权定价。因此,即使在期权市场不完善,期权价格不可靠、不可得,甚至不存在的情况下,也能为期权有效定价。此外,本文将正则定价方法和隐含二叉树方法有效结合,扩展到为奇异期权的定价问题上,并在传统的正则定价方法中加入了价格敏感因素作为约束条件,以提高该方法的定价精度。     

一个外汇期权定价模型

期权定价及其避险策略是金融工程学的一个重要组成部分，并且成为近年来金融数学的一个研究热点，考虑到国与国在连续时段上的相应经济状部钵文对以往的外汇期权定价模型进行了改进，导出并研究了封闭型下的外汇期权定价模型，不仅使外汇期权定价直观准确，更使定价具有实用性；分析了套期经弦和套期保值策略。     

美式期权的Monte Carlo模拟法定价理论及应用

近年来随着计算机技术的飞速发展,美式期权的Monte Carlo模拟法定价取得了实质性的突破。本文分析介绍了美式期权的Monte Carlo模拟法定价理论及在此基础上推导出的线性回归MonteCarlo模拟法定价公式及其在实际的应用。     

On the Robustness of Least-Squares Monte Carlo (LSM) for Pricing American Derivatives

This paper analyses the robustness of Least-Squares Monte Carlo, a technique proposed by Longstaff and Schwartz (2001) for pricing American options. This method is based on least-squares regressions in which the explanatory variables are certain polynomial functions. We analyze the impact of different basis functions on option prices. Numerical results for American put options show that this approach is quite robust to the choice of basis functions. For more complex derivatives, this choice can slightly affect option prices. This revised version was published online in June 2006 with corrections to the Cover Date.     

基于分数维随机利率的分数跳-扩散外汇期权定价

假设利率为分数维随机利率,外汇汇率服从分数跳一扩散过程,并且波动率为常数,期望收益率为时间的非随机函数,本文利用保险精算方法,得出了看涨、看跌外汇欧武期权的一般定价公式,并建立了平价公式。     

多资产大宗商品期权定价研究

基于大宗商品收益率与便利收益服从均值回复过程的假设,建立带协整效应的多资产大宗商品期权定价模型,求解多资产大宗商品期权价格的解析解,将大宗商品期权定价推广到更一般情况.结果表明:标的资产收益率增加,期权价格上升,替代品期权价格下降;标的资产的便利收益增加,期权价格下降,相应替代品的期权价格上升.     

Option Profit and Loss Attribution and Pricing: A New Framework

This paper develops a new top-down valuation framework that links the pricing of an option investment to its daily profit and loss attribution. The framework uses the Black-Merton-Scholes option pricing formula to attribute the short-term option investment risk to variation in the underlying security price and the option's implied volatility. Taking risk-neutral expectation and demanding no dynamic arbitrage result in a pricing relation that links an option's fair implied volatility level to the underlying volatility level with corrections for the implied volatility's own expected direction of movement, its variance, and its covariance with the underlying security return.     

Specification Analysis of Option Pricing Models Based on Time-Changed Lévy Processes

We analyze the specifications of option pricing models based on time-changed Lévy processes. We classify option pricing models based on the structure of the jump component in the underlying return process, the source of stochastic volatility, and the specification of the volatility process itself. Our estimation of a variety of model specifications indicates that to better capture the behavior of the S&P 500 index options, we need to incorporate a high frequency jump component in the return process and generate stochastic volatilities from two different sources, the jump component and the diffusion component.     

基于B-S期权定价模型的可转换债券定价实证分析

可转换债券是一种混合金融衍生工具,它把相应的股票看涨期权内嵌在传统的公司债券之中,具有债券和股票的双重性质,因而可转债的定价问题逐渐为企业和投资者所关注。本文借助Black—Scholes定价模型研究定价理论,对Black-Scholes定价模型进行修正,体现了红利发放对可转换债券定价的影响。     

Option Pricing on Stocks in Mergers and Acquisitions

We develop an arbitrage‐free and complete framework to price options on the stocks of firms involved in a merger or acquisition deal allowing for the possibility that the deal might be called off at an intermediate time, creating discontinuous impacts on the stock prices. Our model can be a normative tool for market makers to quote prices for options on stocks involved in such deals and also for traders to control risks associated with such deals using traded options. The results of tests indicate that the model performs significantly better than the Black–Scholes model in explaining observed option prices.     

An Empirical Portfolio Perspective on Option Pricing Anomalies

We empirically study the economic benefits of giving investorsaccess to index options in the standard portfolio problem, analyzingboth expected-utility and nonexpected-utility investors in orderto understand who optimally buys and sells options. Using dataon S&P 500 index options, CRRA investors find it alwaysoptimal to short out-of-the-money puts and at-the-money straddles.The option positions are economically and statistically significantand robust to corrections for transaction costs, margin requirements,and Peso problems. Loss-averse and disappointment-averse investorsalso optimally hold short option positions. Only with highlydistorted probability assessments can we obtain positive portfolioweights for puts (cumulative prospect theory and anticipatedutility) and straddles (anticipated utility).     

存款保险定价研究:期权定价法和预期损失定价法的进展

合理的存款保险定价可有效减少道德风险和逆向选择问题。本文梳理了国内外关于存款保险定价的两种主要方法——期权定价法和预期损失定价法及其最新发展情况。期权定价法的核心是将存款保险看作存款保险机构以银行资产为标的发行的一份看跌期权,之后学者从股利发放、监管宽容、系统性风险等多个角度进行拓展。预期损失定价法主要根据边际损失与边际保费收入相等来进行保费厘定,以探寻如何通过更科学的方法更精确地测量银行的预期损失。此外,本文讨论了存款保险定价方法对我国的启示。