混合分数布朗运动环境下欧式期权定价

假设股票价格变化过程服从混合分数布朗运动,建立了混合分数布朗环境下支付连续红利的欧式股票期权的定价模型.利用混合分数布朗运动的It-公式,将支付连续红利的欧式股票期权的定价问题转化为一个偏微分方程,通过偏微分方程求解获得了混合分数布朗运动环境下支付连续红利的欧式股票看涨期权的定价公式.     

支付离散红利的交换期权定价

在标的资产支付离散红利的情形下,对交换期权定价问题进行了讨论,并采用Dai和Lyuu（2008）的股票支付离散红利的期权定价方法,给出了支付离散红利的交换期权的闭式解。     

具有连续红利的幂型欧式期权定价

在等价鞅测度框架下,讨论了在期权到期时刻具有连续红利支付的幂型股票欧式期权的定价公式.这里我们假设市场无风险利率,股票预期收益率,股价波动率以及股票红利率都是时间的确定性函数.     

债券受布朗运动驱动时幂型支付重置期权的定价

考虑完全的无套利市场环境下,基础股票支付连续红利,债券价格满足由布朗运动驱动的随机微分方程,对具有幂型支付的一种创新重置期权,以鞅论和随机分析为工具,得到了期权的定价公式.     

漂移项和扩散项具有时滞的股票期权定价

股票价格在漂移项和扩散项具有时滞,且股票在期权有效期内支付连续红利时,利用鞅表示定理和Girsanov定理得到了期权价格的闭式解.研究表明,股票价格在漂移项和扩散项具有时滞时,股票支付红利时对期权价格有一个调整.     

基于跳-分形模型的美式看涨期权定价

假设股票变化过程服从跳一分形布朗运动,根据风险中性定价原理对股票发生跳跃次数的收益求条件期望现值推导出M次离散支付红利的美式看涨期权解析定价方程,并使用外推加速法求出当M趋于无穷时方程的二重、三重正态积分多项式表达,依此计算连续支付红利美式看涨期权价值.数值模拟表明通常仅需二重正态积分多项式能产生精确价值,而在极实值状态下则需三重正态积分多项式才能满足,结合两种多项式可以编出有效数字程序评价支付红利的美式看涨期权.     

Hull-White利率下有红利支付的O-U过程的幂型期权定价

考虑到标的资产(股票)价格和利率的随机性及均值回复特征,采用Hull-White模型刻画利率的变化规律,指数Ornstein-Uhlenbeck(O-U)过程刻画有红利支付的股票价格变化.利用计价单位转换的方法研究了基于以上模型且有连续支付红利情况下的一类幂型欧式期权定价问题,并得到了其定价公式.     

期权定价公式的注

根据建立在连续支付红利且利率变动的股票上的期权的到期特点,利用两个数字式期权构造的投资组合收益来复制期权从而导出欧氏看跌期权的定价公式,避开了通过求解B-S方程来得到期权价格的困难.运用同样的方法也获得了期货期权公式.     

随机支付红利的跳-扩散模型的期权定价

假设股票随机支付红利,且红利的大小与支付红利时刻及股票价格有关,并假设股票价格过程服从跳—扩散模型(其中跳跃过程为Poisson过程)的条件下,建立了股票价格行为模型,应用保险精算法给出了欧式看涨和看跌期权的定价公式,推广了Merton关于期权定价的结果。     

连续支付红利的跳—扩散模型交换期权定价

在假设股票连续支付红利,且股票价格过程服从Poisson跳—扩散过程的条件下,建立了股票价格行为模型,应用保险精算法给出了欧式交换期权的定价公式,推广了Merton关于期权定价的结果.     

Option pricing under joint dynamics of interest rates, dividends, and stock prices

This paper proposes a unified framework for option pricing, which integrates the stochastic dynamics of interest rates, dividends, and stock prices under the transversality condition. Using the Vasicek model for the spot rate dynamics, I compare the framework with two existing option pricing models. The main implication is that the stochastic spot rate affects options not only directly but also via an endogenously determined dividend yield and return volatility; consequently, call prices can be decreasing with respect to interest rates.     

连续红利支付在跳扩散模型下的再装期权的定价

本文在连续时间支付红利,且股票价格服从Poisson跳-扩散过程的假设下,建立股票价格模型,并应用保险精算法给出一类奇异期权—再装期权再装一次情况下的定价公式.     

A Markov-modulated model for stocks paying discrete dividends

We extend the model in [Korn, R., Rogers, L.C.G., 2005. Stock paying discrete dividends: modelling and option pricing. Journal of Derivatives 13, 44–49] for (discrete) dividend processes to incorporate the dependence of assets on the market mode or the state of the economy, where the latter is modeled by a hidden finite-state Markov chain. We then derive the resulting dynamics of the stock price and various option-pricing formulae. It turns out that the stock price jumps not only at the time of the dividend payment, but also when the underlying Markov chain jumps.     

离散分红下障碍期权的间接级数展开定价方法

人们投资股票市场的最大动力,除了从股票本身的升值中获利,还包括收益分红.提出了带有离散分红的障碍期权的一种新型的近似方法,以向上敲出看涨障碍期权为例,固定分红的次数,通过泰勒级数展开得到关于关键变量的仿射函数,给出了一个只带有一维积分的定价公式,提高了计算速度.该方法还可以用于回望期权等其它衍生品的定价,对在市场上进行期权交易有一定指导意义.     

A BLACK－SCHOLES FORMULA FOR OPTIONPRICINGWITHDIVIDENDS

ＡＢＬＡＣＫ－ＳＣＨＯＬＥＳＦＯＲＭＵＬＡＦＯＲＯＰＴＩＯＮＰＲＩＣＩＮＧＷＩＴＨＤＩＶＩＤＥＮＤＳ＊ＸＵＷＥＮＳＨＥＮＧＡＮＤＷＵＺＨＥＮＡｂｓｔｒａｃｔ．ＷｅｏｂｔａｉｎａＢｌａｃｋ－Ｓｃｈｏｌｅｓｆｏｒｍｕｌａｆｏｒｔｈｅａｒｂｉｔｒａｇｅ－ｆ...     

A BLACK-SCHOLES FORMULA FOR OPTION PRICING WITH DIVIDENDS

Abstract. We obtain a Black-Scholes formula for the arbitrage-free pricing of Eu-ropean Call options with constant coefficients when the underlylng stock generatesdividends. To hedge the Call option, we will always borrow money from bank. We seethe influence of the dividend term on the option pricing via the comparison theoremof BSDE(backward stochastic di~erential equation [5], [7]). We also consider the option pricing problem in terms of the borrowing rate R whichis not equal to the interest rate r. The corresponding Black-Sdxoles formula is given.We notice that it is in fact the borrowing rate that plays the role in the pricing formula.     

A Delayed Black and Scholes Formula

Abstract

In this article we develop an explicit formula for pricing European options when the underlying stock price follows nonlinear stochastic functional differential equations with fixed and variable delays. We believe that the proposed models are sufficiently flexible to fit real market data, and yet simple enough to allow for a closed-form representation of the option price. Furthermore, the models maintain the no-arbitrage property and the completeness of the market. The derivation of the option-pricing formula is based on an equivalent local martingale measure.     

OPTIMAL PROPORTIONAL REINSURANCE WITH CONSTANT DIVIDEND BARRIER

In this article, we consider an optimal proportional reinsurance with constant dividend barrier. First, we derive the Hamilton-Jacobi-Bellman equation satisfied by the expected discounted dividend payment, and then get the optimal stochastic control and the optimal constant barrier. Secondly, under the optimal constant dividend barrier strategy, we consider the moments of the discounted dividend payment and their explicit expressions are given. Finally, we discuss the Laplace transform of the time of ruin and its explicit expression is also given.