《Equitable retirement income tontines: Mixing cohorts without
discriminating》
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作者:
M.A. Milevsky and T.S. Salisbury
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最新提交年份:
2016
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英文摘要:
There is growing interest in the design of pension annuities that insure against idiosyncratic longevity risk while pooling and sharing systematic risk. This is partially motivated by the desire to reduce capital and reserve requirements while retaining the value of mortality credits; see for example Piggott, Valdez and Detzel (2005) or Donnelly, Guillen and Nielsen (2014). In this paper we generalize the natural retirement income tontine introduced by Milevsky and Salisbury (2015) by combining heterogeneous cohorts into one pool. We engineer this scheme by allocating tontine shares at either a premium or a discount to par based on both the age of the investor and the amount they invest. For example, a 55 year-old allocating $\\$10,000$ to the tontine might be told to pay $\\$$200 per share and receive 50 shares, while a 75 year-old allocating $\\$8,000$ might pay $\\$$40 per share and receive 200 shares. They would all be mixed together into the same tontine pool and each tontine share would have equal income rights. The current paper addresses existence and uniqueness issues and discusses the conditions under which this scheme can be constructed equitably -- which is distinct from fairly -- even though it isn\'t optimal for any cohort. As such, this also gives us the opportunity to compare and contrast various pooling schemes that have been proposed in the literature and to differentiate between arrangements that are socially equitable, vs. actuarially fair vs. economically optimal.
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中文摘要:
人们对养老金的设计越来越感兴趣,这种养老金能够在汇集和分担系统风险的同时,防范特殊的长寿风险。部分原因是希望降低资本和准备金要求,同时保留死亡率信贷的价值;例如,见Piggott、Valdez和Detzel(2005)或Donnelly、Guillen和Nielsen(2014)。在本文中,我们将Milevsky和Salisbury(2015)引入的自然退休收入tontine进行了概括,将异质队列组合到一个池中。我们通过根据投资者的年龄和投资金额,以面值溢价或折价的方式分配tontine股票来设计这一方案。例如,一个55岁的分配10000美元给tontine的人可能会被告知支付200美元每股,然后获得50股,而一个分配8000美元的75岁的人可能支付40美元每股,然后获得200股。他们将全部混合在同一个tontine池中,每个tontine股份将拥有平等的收入权。当前的论文讨论了存在性和唯一性问题,并讨论了该方案可以公平构建的条件,这与公平不同,即使它对于任何队列都不是最优的。因此,这也让我们有机会比较和对比文献中提出的各种集合计划,并区分社会公平、精算公平和经济最优的安排。
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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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一级分类:Quantitative Finance 数量金融学
二级分类:General Finance 一般财务
分类描述:Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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Equitable_retirement_income_tontines:_Mixing_cohorts_without_discriminating.pdf
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