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arXiv 0706.0474q-fin.PMmath.OCmath.PR
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不完全市场中效用最大化的稳定性

Stability of utility-maximization in incomplete markets

Kasper Larsen, Gordan Zitkovic

摘要:

投资组合管理的效用最大化技术的有效性依赖于我们正确估计基础金融资产动态参数的能力。在完整或不完整的金融市场的设置,我们调查是否小扰动的市场系数过程导致小的变化,代理人的最佳行为来自相关的效用最大化问题的解决方案。具体地说,我们确定的拓扑结构的参数过程空间和解空间下,效用最大化是一个连续的操作,我们提供了一个反例表明,我们的结果是最好的可能,在一定意义上。作为中心定理证明的一个分支,建立了一个关于连续半鞅模型下的效用最大化问题解的结构的新结果。

英文摘要:

The effectiveness of utility-maximization techniques for portfolio management relies on our ability to estimate correctly the parameters of the dynamics of the underlying financial assets. In the setting of complete or incomplete financial markets, we investigate whether small perturbations of the market coefficient processes lead to small changes in the agent's optimal behavior derived from the solution of the related utility-maximization problems. Specifically, we identify the topologies on the parameter process space and the solution space under which utility-maximization is a continuous operation, and we provide a counterexample showing that our results are best possible, in a certain sense. A novel result about the structure of the solution of the utility-maximization problem where prices are modeled by continuous semimartingales is established as an offshoot of the proof of our central theorem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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