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arXiv 1104.4596q-fin.TRq-fin.ST
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马尔可夫限价订单市场的价格动力学

Price dynamics in a Markovian limit order market

Rama Cont, Adrien De Larrard

摘要:

本文提出并研究了一个简单的限价订单簿动态随机模型,其中市价订单、限价订单和撤单取消都用马尔可夫模型描述。通过其分析的易处理性,该模型允许获得各种利益量的分析表达式,例如价格变化之间的持续时间的分布,价格变化的分布和自相关性,以及价格向上移动的概率,{ \it条件}取决于订单簿的状态。我们研究了价格过程的扩散极限,并用描述买卖订单和取消订单到达率的参数来表示价格变化的波动性。这些分析结果提供了一些洞察订单流和价格动态之间的关系在订单驱动市场。

英文摘要:

We propose and study a simple stochastic model for the dynamics of a limit order book, in which arrivals of market order, limit orders and order cancellations are described in terms of a Markovian queueing system. Through its analytical tractability, the model allows to obtain analytical expressions for various quantities of interest such as the distribution of the duration between price changes, the distribution and autocorrelation of price changes, and the probability of an upward move in the price, {\it conditional} on the state of the order book. We study the diffusion limit of the price process and express the volatility of price changes in terms of parameters describing the arrival rates of buy and sell orders and cancelations. These analytical results provide some insight into the relation between order flow and price dynamics in order-driven markets.

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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