在金融市场充满不确定因素且保险公司对金融市场表现出模糊厌恶态度的背景下,采用损失依赖保费原则进行保费收取,深入探讨了鲁棒最优再保险-投资问题。假设风险资产价格过程遵循(constant elasticity of variance,CEV)模型,以最大化保...在金融市场充满不确定因素且保险公司对金融市场表现出模糊厌恶态度的背景下,采用损失依赖保费原则进行保费收取,深入探讨了鲁棒最优再保险-投资问题。假设风险资产价格过程遵循(constant elasticity of variance,CEV)模型,以最大化保险公司终端财富的期望效用为目标,构建了相应的值函数满足(Hamilton-Jacobi-Bellman,HJB)方程。通过运用动态规划原理,成功获得了稳健最优再保险-投资策略的显式解。此外,借助数值算例,详细分析了模型参数对最优再保险-投资策略的具体影响。展开更多
The constant elasticity of variance(CEV) model was constructed to study a defined contribution pension plan where benefits were paid by annuity. It also presents the process that the Legendre transform and dual theo...The constant elasticity of variance(CEV) model was constructed to study a defined contribution pension plan where benefits were paid by annuity. It also presents the process that the Legendre transform and dual theory can be applied to find an optimal investment policy during a participant's whole life in the pension plan. Finally, two explicit solutions to exponential utility function in the two different periods (before and after retirement) are revealed. Hence, the optimal investment strategies in the two periods are obtained.展开更多
权证定价无论在业界和学界都是一个十分重要的问题。利用沪市2006年发行备兑认购权证的六支股票作为标的,实证分析股票价格行为。结果表明CEV(Constant Elasticity of Variance,常方差弹性)模型比对数正态假定能够更好地描述股票价格。...权证定价无论在业界和学界都是一个十分重要的问题。利用沪市2006年发行备兑认购权证的六支股票作为标的,实证分析股票价格行为。结果表明CEV(Constant Elasticity of Variance,常方差弹性)模型比对数正态假定能够更好地描述股票价格。在此基础上,利用模拟分析对权证进行了定价,并将定价结果和B-S公式进行了比较。最后给出了对策和建议。展开更多
利用投资组合选择理论和随机控制理论研究了基于常弹性方差(Constant elasticity of variance,CEV)模型下的一类资产负债管理问题.金融市场由一种无风险资产和一种风险资产组成,其中风险资产的价格过程服从CEV模型,负债过程除了受风险...利用投资组合选择理论和随机控制理论研究了基于常弹性方差(Constant elasticity of variance,CEV)模型下的一类资产负债管理问题.金融市场由一种无风险资产和一种风险资产组成,其中风险资产的价格过程服从CEV模型,负债过程除了受风险资产价格的影响外,还会受到其它因素的影响.利用随机动态规划原理和函数变换法得到了最优投资策略和值函数的显式表达式.在显式表达式的基础上,对所得结果进行灵敏度分析及在经济上给出了合理的解释,为实际环境下存有负债的投资者投资提供一定的理论依据.展开更多
文摘在金融市场充满不确定因素且保险公司对金融市场表现出模糊厌恶态度的背景下,采用损失依赖保费原则进行保费收取,深入探讨了鲁棒最优再保险-投资问题。假设风险资产价格过程遵循(constant elasticity of variance,CEV)模型,以最大化保险公司终端财富的期望效用为目标,构建了相应的值函数满足(Hamilton-Jacobi-Bellman,HJB)方程。通过运用动态规划原理,成功获得了稳健最优再保险-投资策略的显式解。此外,借助数值算例,详细分析了模型参数对最优再保险-投资策略的具体影响。
基金The Humanities and Social Science Research Youth Foundation of Ministry of Education(11YJC790006)the Higher School Science and Technology Development Foundation of Tianjin(20100821)
基金Supported by the Program of Natural Science Research of Jiangsu Higher Education Institutions of China(13KJD110006,2KJB110011)the National Natural Science Foundation of China(61304065)
基金Project supported by the Science Foundation of Central South University of Forestry and Technology (No.06010A).
文摘The constant elasticity of variance(CEV) model was constructed to study a defined contribution pension plan where benefits were paid by annuity. It also presents the process that the Legendre transform and dual theory can be applied to find an optimal investment policy during a participant's whole life in the pension plan. Finally, two explicit solutions to exponential utility function in the two different periods (before and after retirement) are revealed. Hence, the optimal investment strategies in the two periods are obtained.
文摘权证定价无论在业界和学界都是一个十分重要的问题。利用沪市2006年发行备兑认购权证的六支股票作为标的,实证分析股票价格行为。结果表明CEV(Constant Elasticity of Variance,常方差弹性)模型比对数正态假定能够更好地描述股票价格。在此基础上,利用模拟分析对权证进行了定价,并将定价结果和B-S公式进行了比较。最后给出了对策和建议。
文摘利用投资组合选择理论和随机控制理论研究了基于常弹性方差(Constant elasticity of variance,CEV)模型下的一类资产负债管理问题.金融市场由一种无风险资产和一种风险资产组成,其中风险资产的价格过程服从CEV模型,负债过程除了受风险资产价格的影响外,还会受到其它因素的影响.利用随机动态规划原理和函数变换法得到了最优投资策略和值函数的显式表达式.在显式表达式的基础上,对所得结果进行灵敏度分析及在经济上给出了合理的解释,为实际环境下存有负债的投资者投资提供一定的理论依据.