英文标题:
《Unit-linked life insurance policies: optimal hedging in partially
  observable market models》
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作者:
Claudia Ceci, Katia Colaneri, Alessandra Cretarola
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最新提交年份:
2016
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英文摘要:
  In this paper we investigate the hedging problem of a unit-linked life insurance contract via the local risk-minimization approach, when the insurer has a restricted information on the market. In particular, we consider an endowment insurance contract, that is a combination of a term insurance policy and a pure endowment, whose final value depends on the trend of a stock market where the premia the policyholder pays are invested. We assume that the stock price process dynamics depends on an exogenous unobservable stochastic factor that also influences the mortality rate of the policyholder. To allow for mutual dependence between the financial and the insurance markets, we use the progressive enlargement of filtration approach. We characterize the optimal hedging strategy in terms of the integrand in the Galtchouk-Kunita-Watanabe decomposition of the insurance claim with respect to the minimal martingale measure and the available information flow. We provide an explicit formula by means of predictable projection of the corresponding hedging strategy under full information with respect to the natural filtration of the risky asset price and the minimal martingale measure. Finally, we discuss applications in a Markovian setting via filtering. 
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中文摘要:
本文利用局部风险最小化方法研究了当保险人在市场上拥有受限信息时,单位关联寿险合同的套期保值问题。特别是,我们考虑养老保险合同,即定期保单和纯养老保险的组合,其最终价值取决于股票市场的趋势,其中保单持有人支付的保费是投资的。我们假设股票价格过程动力学依赖于一个外生的不可观测随机因素,该因素也会影响投保人的死亡率。为了让金融市场和保险市场相互依赖,我们采用了逐步扩大过滤的方法。我们根据保险索赔的Galtchouk Kunita Watanabe分解中的被积函数,在最小鞅测度和可用信息流方面,刻画了最优套期保值策略。在充分信息条件下,通过对相应套期保值策略的可预测投影,我们给出了一个关于风险资产价格自然过滤和最小鞅测度的显式公式。最后,我们讨论了通过过滤在马尔可夫环境中的应用。
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分类信息:
一级分类:Quantitative Finance        数量金融学
二级分类:Mathematical Finance        数学金融学
分类描述:Mathematical and analytical methods of finance, including stochastic, probabilistic and functional analysis, algebraic, geometric and other methods
金融的数学和分析方法,包括随机、概率和泛函分析、代数、几何和其他方法
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