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arXiv 1506.02789q-fin.TRmath.OC
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具有不确定市场冲击的最优执行问题的理论与数值分析

Theoretical and Numerical Analysis of an Optimal Execution Problem with Uncertain Market Impact

Kensuke Ishitani, Takashi Kato

摘要:

本文是Ishitani和Kato(2015)的延续,其中我们导出了一个连续时间价值函数,对应于不确定市场冲击的最优执行问题,作为离散时间价值函数的极限。在这里,我们研究了导值函数的一些性质。特别地,我们证明了该函数是连续的并且具有半群性质,这与Hamilton-Jacobi-Bellman拟变分不等式密切相关。此外,我们表明,噪音在市场冲击导致风险中性评估低估的影响成本。我们还研究了典型的例子下的对数线性/二次市场冲击函数与伽玛分布噪声。

英文摘要:

This paper is a continuation of Ishitani and Kato (2015), in which we derived a continuous-time value function corresponding to an optimal execution problem with uncertain market impact as the limit of a discrete-time value function. Here, we investigate some properties of the derived value function. In particular, we show that the function is continuous and has the semigroup property, which is strongly related to the Hamilton-Jacobi-Bellman quasi-variational inequality. Moreover, we show that noise in market impact causes risk-neutral assessment to underestimate the impact cost. We also study typical examples under a log-linear/quadratic market impact function with Gamma-distributed noise.

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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