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arXiv 1901.03030q-fin.PMmath.OCmath.PR
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部分信息下具有漂移不确定性的均值-方差投资组合选择

Mean-variance portfolio selection under partial information with drift uncertainty

Jie Xiong, Zuo quan Xu, Jiayu Zheng

摘要:

本文研究了部分信息下具有漂移不确定性的均值-方差投资组合选择问题。首先,我们表明,即使在这种情况下,市场模型是完全的,而信息是不完全的,漂移是不确定的。在此基础上,推导出了基于部分信息的最优策略,并将其归结为求解一个相关的倒向随机微分方程(Boundary)。最后,我们提出了一个有效的数值格式来近似的最优投资组合,即上述的解决方案。Malliavin演算和粒子表示在这个方案中起着重要的作用。

英文摘要:

In this paper, we study the mean-variance portfolio selection problem under partial information with drift uncertainty. First we show that the market model is complete even in this case while the information is not complete and the drift is uncertain. Then, the optimal strategy based on partial information is derived, which reduces to solving a related backward stochastic differential equation (BSDE). Finally, we propose an efficient numerical scheme to approximate the optimal portfolio that is the solution of the BSDE mentioned above. Malliavin calculus and the particle representation play important roles in this scheme.

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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