A stochastic volatility model and optimal portfolio selection

A stochastic volatility model and optimal portfolio selection
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DOI:
10.1080/14697688.2012.740568
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发表时间:
2012-03
影响因子:
1.3
通讯作者:
Xudong Zeng;M. Taksar
Xudong Zeng;M. Taksar
中科院分区:
经济学3区
文献类型:
--
作者:
Xudong Zeng;M. Taksar

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在本文中,我们首先研究了一个随机波动率市场模型,并得到了其终端财富效用函数最大化问题的一个显式候选解。应用这一结果,我们给出了赫斯顿模型的一个完全解,这是一般模型的一个特例。给出了赫斯顿模型的验证结果和解的鞅表示。最后,用同样的方法研究了一个随机利率模型,给出了一个爆炸增长的充要条件。
In this paper, first we study a stochastic volatility market model for which an explicit candidate solution to the problem of maximizing the utility function of terminal wealth is obtained. Applying this result, we present a complete solution for the Heston model, which is a particular case of the general model. A verification result and a martingale representation of the solution are provided for the Heston model. Finally, the same techniques are used to study a stochastic interest rate model and a necessary and sufficient condition for exploding growth is presented.