《Continuous time analysis of fleeting discrete price moves》
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作者:
Neil Shephard and Justin J. Yang
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最新提交年份:
2015
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英文摘要:
This paper proposes a novel model of financial prices where: (i) prices are discrete; (ii) prices change in continuous time; (iii) a high proportion of price changes are reversed in a fraction of a second. Our model is analytically tractable and directly formulated in terms of the calendar time and price impact curve. The resulting c\\`{a}dl\\`{a}g price process is a piecewise constant semimartingale with finite activity, finite variation and no Brownian motion component. We use moment-based estimations to fit four high frequency futures data sets and demonstrate the descriptive power of our proposed model. This model is able to describe the observed dynamics of price changes over three different orders of magnitude of time intervals.
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中文摘要:
本文提出了一种新的金融价格模型,其中:(i)价格是离散的;(二)价格连续变动;(iii)很大一部分价格变化会在几分之一秒内逆转。我们的模型在分析上易于处理,并根据日历时间和价格影响曲线直接制定。由此得到的c\\`a}dl\\`a}g价格过程是一个具有有限活动、有限变差且无布朗运动分量的分段常数半鞅。我们使用基于矩的估计来拟合四个高频期货数据集,并证明了我们提出的模型的描述能力。该模型能够描述在三个不同数量级的时间间隔内观察到的价格变化动态。
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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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一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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