arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.10632q-fin.TRq-fin.MF
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流动性波动下的订单簿动态:极限定理和大偏差

Order book dynamics with liquidity fluctuations: limit theorems and large deviations

Helder Rojas, Artem Logachov, Anatoly Yambartsev

摘要:

建立了一类具有不同流动性的限价订单簿动态的随机模型。在这类模型中,我们研究了一个传播均匀减少的模型,属于一类被称为具有均匀灾难的人口过程的过程。证明了具有一致灾变的模型的大数定律、中心极限定理和大偏差定理。我们的研究结果使我们能够满意地解释价格的波动性和局部趋势,以及在这类市场中观察到的相关经验特征。此外,它向我们展示了这些局部趋势和波动性是如何由买卖价差的典型值决定的。此外,我们使用我们的模型来显示价差和价格发生多大的偏差,例如在闪电崩盘中观察到的偏差。

英文摘要:

We propose a class of stochastic models for a dynamics of limit order book with different type of liquidities. Within this class of models we study the one where a spread decreases uniformly, belonging to the class of processes known as a population processes with uniform catastrophes. The law of large numbers (LLN), central limit theorem (CLT) and large deviations (LD) are proved for our model with uniform catastrophes. Our results allow us to satisfactorily explain the volatility and local trends in the prices, relevant empirical characteristics that are observed in this type of markets. Furthermore, it shows us how these local trends and volatility are determined by the typical values of the bid-ask spread. In addition, we use our model to show how large deviations occur in the spread and prices, such as those observed in flash crashes.

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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