《Endogeneous Dynamics of Intraday Liquidity》
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作者:
Miko{\\l}aj Bi\\\'nkowski and Charles-Albert Lehalle
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最新提交年份:
2018
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英文摘要:
In this paper we investigate the endogenous information contained in four liquidity variables at a five minutes time scale on equity markets around the world: the traded volume, the bid-ask spread, the volatility and the volume at first limits of the orderbook. In the spirit of Granger causality, we measure the level of information by the level of accuracy of linear autoregressive models. This empirical study is carried out on a dataset of more than 300 stocks from four different markets (US, UK, Japan and Hong Kong) from a period of over five years. We discuss the obtained performances of autoregressive (AR) models on stationarized versions of the variables, focusing on explaining the observed differences between stocks. Since empirical studies are often conducted at this time scale, we believe it is of paramount importance to document endogenous dynamics in a simple framework with no addition of supplemental information. Our study can hence be used as a benchmark to identify exogenous effects. On the other hand, most optimal trading frameworks (like the celebrated Almgren and Chriss one), focus on computing an optimal trading speed at a frequency close to the one we consider. Such frameworks very often take i.i.d. assumptions on liquidity variables; this paper document the auto-correlations emerging from real data, opening the door to new developments in optimal trading.
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中文摘要:
在本文中,我们以五分钟的时间尺度研究了全球股票市场上四个流动性变量所包含的内生信息:交易量、买卖价差、波动性和订单第一限额的交易量。本着格兰杰因果关系的精神,我们通过线性自回归模型的精度来衡量信息水平。这项实证研究是在五年多的时间里对四个不同市场(美国、英国、日本和香港)的300多只股票进行的。我们讨论了自回归(AR)模型在变量的平稳化版本上获得的性能,重点是解释观察到的股票之间的差异。由于实证研究通常是在这个时间尺度上进行的,我们认为在一个简单的框架中记录内生动力学是至关重要的,不需要添加补充信息。因此,我们的研究可以作为识别外源效应的基准。另一方面,最理想的交易框架(如著名的Almgren和Chriss框架)侧重于以接近我们所考虑的频率计算最佳交易速度。此类框架通常对流动性变量进行i.i.d.假设;本文记录了真实数据中出现的自相关性,为最优交易的新发展打开了大门。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Trading and Market Microstructure 交易与市场微观结构
分类描述:Market microstructure, liquidity, exchange and auction design, automated trading, agent-based modeling and market-making
市场微观结构,流动性,交易和拍卖设计,自动化交易,基于代理的建模和做市
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Endogeneous_Dynamics_of_Intraday_Liquidity.pdf
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