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arXiv 1412.0141q-fin.TR
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非线性市场冲击的完全一致的最小模型

A fully consistent, minimal model for non-linear market impact

Jonathan Donier, Julius Bonart, Iacopo Mastromatteo, Jean-Philippe Bouchaud

摘要:

我们提出了一个最小的非线性价格影响理论的基础上的线性(潜在的)订单簿近似,灵感来自扩散反应模型和一般参数。我们的框架允许一个计算平均价格轨迹的元订单的存在下,一贯概括以前提出的传播模型。我们考虑到普遍观察到的平方根影响定律,并预测交易中断或逆转时的非平凡轨迹。我们证明了我们的框架是免费的价格操纵,价格可以扩散(尽管有一个通用的短期均值回复的贡献)。我们的模型表明,价格可以分解为一个短暂的“机械”的影响组件和一个永久的“信息”组件。

英文摘要:

We propose a minimal theory of non-linear price impact based on a linear (latent) order book approximation, inspired by diffusion-reaction models and general arguments. Our framework allows one to compute the average price trajectory in the presence of a meta-order, that consistently generalizes previously proposed propagator models. We account for the universally observed square-root impact law, and predict non-trivial trajectories when trading is interrupted or reversed. We prove that our framework is free of price manipulation, and that prices can be made diffusive (albeit with a generic short-term mean-reverting contribution). Our model suggests that prices can be decomposed into a transient "mechanical" impact component and a permanent "informational" component.

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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