《Mean-variance hedging based on an incomplete market with external risk
factors of non-Gaussian OU processes》
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作者:
Wanyang Dai
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最新提交年份:
2015
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英文摘要:
In this paper, we prove the global risk optimality of the hedging strategy of contingent claim, which is explicitly (or called semi-explicitly) constructed for an incomplete financial market with external risk factors of non-Gaussian Ornstein-Uhlenbeck (NGOU) processes. Analytical and numerical examples are both presented to illustrate the effectiveness of our optimal strategy. Our study establishes the connection between our financial system and existing general semimartingale based discussions by justifying required conditions. More precisely, there are three steps involved. First, we firmly prove the no-arbitrage condition to be true for our financial market, which is used as an assumption in existing discussions. In doing so, we explicitly construct the square-integrable density process of the variance-optimal martingale measure (VOMM). Second, we derive a backward stochastic differential equation (BSDE) with jumps for the mean-value process of a given contingent claim. The unique existence of adapted strong solution to the BSDE is proved under suitable terminal conditions including both European call and put options as special cases. Third, by combining the solution of the BSDE and the VOMM, we reach the justification of the global risk optimality for our hedging strategy.
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中文摘要:
在本文中,我们证明了对于具有非高斯Ornstein-Uhlenbeck(NGOU)过程外部风险因素的不完备金融市场,显式(或半显式)构造的未定权益套期保值策略的全局风险最优性。通过分析和数值算例说明了优化策略的有效性。我们的研究通过证明必要条件,建立了我们的金融体系和现有基于一般半鞅的讨论之间的联系。更准确地说,这涉及三个步骤。首先,我们坚定地证明了无套利条件对我们的金融市场是正确的,这在现有的讨论中被用作一个假设。在此过程中,我们明确地构造了方差最优鞅测度(VOMM)的平方可积密度过程。其次,我们推导了一个具有跳跃的倒向随机微分方程(BSDE),用于给定未定权益的均值过程。在适当的终端条件下,证明了BSDE的自适应强解的唯一存在性,包括欧式看涨期权和看跌期权作为特例。第三,通过结合BSDE和VOMM的解,我们得出了套期保值策略的全局风险最优性的合理性。
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分类信息:
一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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一级分类:Mathematics 数学
二级分类:Optimization and Control 优化与控制
分类描述:Operations research, linear programming, control theory, systems theory, optimal control, game theory
运筹学,线性规划,控制论,系统论,最优控制,博弈论
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一级分类:Quantitative Finance 数量金融学
二级分类:Pricing of Securities 证券定价
分类描述:Valuation and hedging of financial securities, their derivatives, and structured products
金融证券及其衍生产品和结构化产品的估值和套期保值
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