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arXiv 1301.6485q-fin.TRmath.PR
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具有不确定市场冲击的最优执行问题的数学表述

Mathematical Formulation of an Optimal Execution Problem with Uncertain Market Impact

Kensuke Ishitani, Takashi Kato

摘要:

研究了具有不确定市场冲击的最优执行问题,得到了一个更符合实际的市场模型。我们构造了一个离散时间模型作为最优执行的价值函数。市场冲击被表示为随执行量增加的确定性部分和正的随机噪声部分的乘积。然后,我们推导出一个连续时间模型作为离散时间值函数的极限。我们发现,连续时间的价值函数的特点是一个随机控制问题的Levy过程。

英文摘要:

We study an optimal execution problem with uncertain market impact to derive a more realistic market model. We construct a discrete-time model as a value function for optimal execution. Market impact is formulated as the product of a deterministic part increasing with execution volume and a positive stochastic noise part. Then, we derive a continuous-time model as a limit of a discrete-time value function. We find that the continuous-time value function is characterized by a stochastic control problem with a Levy process.

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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