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期权是现代金融风险管理的重要工具之一,确定的执行价格以及特殊的损益是期权最大的特点。美式期权可以在期权到期日之前的任何时间行权,封顶确定了市场价格和执行价格之间的间距,看涨期权具有损失有限收益无限的特点。自1973年Fischer Black和Myron Scholes提出了著名的期权定价公式,Black-Scholes的研究框架成为期权定价研究的主流。标准的美式封顶看涨期权定价是自由边界问题,本文从美式封顶看涨期权性质研究开始,继而建立自由边界模型和变分不等方程两种模型对美式封顶看涨期权的定价进行分析。 相似文献
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外汇期权属于期权家族中的一种,它与其他种类的期权有共同点,也有不同点,外汇期权涉及的是两种货币,牵扯到两种货币利率的问题。这里我们针对美式期权的定价做一探讨:以一个USDCall/JPYPut美式外汇期权为例,说明如何利用二项式模型为美式外汇期权定价。 相似文献
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外汇期权属于期权家族中的一种,它与其他种类的期权有共同点,也有不同点,外汇期权涉及的是两种货币,牵扯到两种货币利率的问题。这里我们针对美式期权的定价做一探讨:以一个USDCall/JPYPut美式外汇期权为例,说明如何利用二项式模型为美式外汇期权定价。 相似文献
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2月16日,国家外汇管理局发布通知,批准中国外汇交易中心在银行间外汇市场组织开展人民币对外汇期权交易,自2011年4月1日起施行。这个通知可以看作我国金融文件上的里程碑。因为它有利于完善国内外汇市场人民币对外汇衍生产品体系,丰富了衍生产品种类,便利企业、银行等市场主体规避汇率风险。《通知》主要包括以下几方面的内容:一是产品类型明确为普通欧式期权。二是交易原则,规定客户办理期权业务应 相似文献
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著名的布莱克-舒尔斯期权定价模型成功为期权这一最复杂的衍生金融工具定价,他的提出最早可追溯到1973年,由美国芝加哥大学教授费雪·布莱克和梅隆·舒尔斯合作发表的《期权与公司负债定价》一文,这一难题的攻克引起了强烈的反响。随着期权理论的逐步发展,人们意识到生活中很多事物或者交易可以被转换为期权的思想。本文即将公司股票和债券视为基于公司资产的期权,从而利用B-S模型为公司股票和债券定价。 相似文献
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本着把期权思想应用于公司价值评估,分别运用二叉树模型和Black-Scholes模型计算公司价值,并对这一方法的应用价值及局限性进行一定的探讨。 相似文献
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存款保险的期权定价模型构造及实证研究 总被引:4,自引:0,他引:4
存款保险定价是存款保险制度建设中的核心内容,保险定价效率直接影响制度的功效。碍于现金流贴现估价模型的局限性,从期权的角度阐述了存款保险与期权的关系,指出存款保险合同实质上就是一份看跌期权,从理论和实证两方面论述了如何运用Black-Schole期权定价模型确定存款保险价格的问题,对实践中存款保险的合理定价和制度建设具有重要的指导意义。 相似文献
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Ken Palmer 《Mathematical Finance》2001,11(3):357-363
Working in a binomial framework, Boyle and Vorst (1992) derived self-financing strategies perfectly replicating the final payoffs to long positions in European call and put options, assuming proportional transactions costs on trades in the stocks. The initial cost of such a strategy yields, by an arbitrage argument, an upper bound for the option price. A lower bound for the option price is obtained by replicating a short position. However, for short positions, Boyle and Vorst had to impose three additional conditions. Our aim in this paper is to remove Boyle and Vorst's conditions for the replication of short calls and puts. 相似文献
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An Asymptotic Analysis of an Optimal Hedging Model for Option Pricing with Transaction Costs 总被引:5,自引:0,他引:5
Davis, Panas, and Zariphopoulou (1993) and Hodges and Neuberger (1989) have presented a very appealing model for pricing European options in the presence of rehedging transaction costs. In their papers the 'maximization of utility' leads to a hedging strategy and an option value. The latter is different from the Black–Scholes fair value and is given by the solution of a three–dimensional free boundary problem. This problem is computationally very time–consuming. In this paper we analyze this problem in the realistic case of small transaction costs, applying simple ideas of asymptotic analysis. The problem is then reduced to an inhomogeneous diffusion equation in only two independent variables, the asset price and time. The advantages of this approach are to increase the speed at which the optimal hedging strategy is calculated and to add insight generally. Indeed, we find a very simple analytical expression for the hedging strategy involving the option's gamma. 相似文献
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This paper investigates the statistical properties of the Black–Scholes option price, considered as a random variable. The option is conditioned on the current price and/or the estimated volatility of the underlying security. In both cases, some exact results for the distribution functions of the true option price and the predicted option price are derived. Extensions to puts and American contracts are considered. Numerical results are presented for option prices based on parameters appropriate for the FTSE 100 Index. 相似文献
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并购能够为企业带来诸如规模经济、资源配置、组合协同效应。但是并购的各个环节都有风险,笔者由于定价不准确而导致的并购结果的不确定性,从而使主并企业蒙受损失的可能性定义为并购定价风险,用风险价值VaR来度量。利用期权博弈理论的思想与建模方法确定并购成交价格,在此基础上建立并购定价风险(VaR)的数学模型,并进行实证分析。 相似文献
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Stochastic volatility models of the Ornstein-Uhlenbeck type possess authentic capability of capturing some stylized features of financial time series. In this work we investigate this class of models from the viewpoint of derivative asset analysis. We discuss topics related to the incompleteness of this type of markets. In particular, for structure preserving martingale measures, we derive the price of simple European-style contracts in closed form. Furthermore, the range of viable prices is determined and an empirical application is presented. 相似文献
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论传统股票期权激励模式的缺陷及其改进 总被引:1,自引:0,他引:1
牛春巧 《商业经济(哈尔滨)》2005,(3):47-49
国际上普遍采用的股票期权激励制度系单边激励,将市场影响与经营者主观努力混为一谈,对经营者构成一定的财务负担,导致内部分配不公。我国应实行具有激励与约束有机结合,能体现经营者主观努力程度,使激励更具科学性、公平性、持续性的业绩———指数化股票期权激励模式,进而真正达到对管理层激励的目的 相似文献
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We present a novel method for extracting the risk-neutral probability of default (PD) of a firm from American put option prices. Building on the idea of a default corridor proposed by Carr and Wu, we derive a parsimonious closed-form formula for American put option prices from which the PD can be inferred. The method is easy to implement. Our empirical results based on seven large US firms for the period 2002–2010 show that, in some cases, our option-implied PD can provide a more accurate estimate of default probability than the estimates implied from credit default swaps. 相似文献