英文标题:
《Pricing and Hedging GMWB in the Heston and in the Black-Scholes with
Stochastic Interest Rate Models》
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作者:
Ludovic Gouden\\`ege, Andrea Molent and Antonino Zanette
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最新提交年份:
2016
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英文摘要:
Valuing Guaranteed Minimum Withdrawal Benefit (GMWB) has attracted significant attention from both the academic field and real world financial markets. As remarked by Yang and Dai, the Black and Scholes framework seems to be inappropriate for such a long maturity products. Also Chen Vetzal and Forsyth in showed that the price of these products is very sensitive to interest rate and volatility parameters. We propose here to use a stochastic volatility model (Heston model) and a Black Scholes model with stochastic interest rate (Hull White model). For this purpose we present four numerical methods for pricing GMWB variables annuities: a hybrid tree-finite difference method and a Hybrid Monte Carlo method, an ADI finite difference scheme, and a Standard Monte Carlo method. These methods are used to determine the no-arbitrage fee for the most popular versions of the GMWB contract, and to calculate the Greeks used in hedging. Both constant withdrawal, optimal surrender and optimal withdrawal strategies are considered. Numerical results are presented which demonstrate the sensitivity of the no-arbitrage fee to economic, contractual and longevity assumptions.
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中文摘要:
对保证最低支取福利(GMWB)的估值已引起学术界和现实世界金融市场的极大关注。正如杨和戴所说,Black和Scholes框架似乎不适合这样一个长期成熟的产品。Chen Vetzal和Forsyth in还表明,这些产品的价格对利率和波动参数非常敏感。我们建议使用随机波动率模型(赫斯顿模型)和随机利率的布莱克-斯科尔斯模型(赫尔-怀特模型)。为此,我们提出了四种GMWB变量年金定价的数值方法:混合树有限差分法和混合蒙特卡罗法、ADI有限差分格式和标准蒙特卡罗方法。这些方法用于确定最流行的GMWB合同版本的无套利费用,并计算套期保值中使用的金额。考虑了持续撤退、最优投降和最优撤退策略。数值结果显示了无套利费用对经济、合同和寿命假设的敏感性。
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分类信息:
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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一级分类:Quantitative Finance 数量金融学
二级分类:Computational Finance 计算金融学
分类描述:Computational methods, including Monte Carlo, PDE, lattice and other numerical methods with applications to financial modeling
计算方法,包括蒙特卡罗,偏微分方程,格子和其他数值方法,并应用于金融建模
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