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外汇订单流中的持续长期记忆

文章 arXiv papers · 作者: Martin D. Gould et al.

总结

本研究考察外汇即期市场的订单流是否具有长期记忆,即其行为中的依赖关系是否会持续较长时间。研究分析高活跃度电子平台上的三个流动性较高的货币对,所用数据可在单个交易日内得出稳定估计,无需将多日观测合并。

研究报告称,在每个抽样交易日,三个货币对的 Hurst 指数都接近0.7;将数据扩展至多日时,结果相似。研究还检验了结构性断点是否能解释这种表面上的持续性,并排除了这一解释,支持真实长期记忆的结论。研究发现表明,这种特性会延续至跨日边界。本文未说明平台、样本日期、估计方法或实际交易应用细节,因此应将报告结果理解为针对所研究数据的实证发现,而非对其他交易场所或时期的保证。

核心观点

  • 所研究的三个FX即期货币对的订单流显示出明显的长期记忆。
  • 各货币对和抽样交易日的 Hurst 指数估计值约为0.7。
  • 观测数据跨越多个交易日时,结果仍然相似。
  • 检验排除了结构性断点是表面持续性来源的解释。

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# The Long Memory of Order Flow in the Foreign Exchange Spot Market


# The Long Memory of Order Flow in the Foreign Exchange Spot Market









We study the long memory of order flow for each of three liquid currency pairs on a large electronic trading platform in the foreign exchange (FX) spot market. Due to the extremely high levels of market activity on the platform, and in contrast to existing empirical studies of other markets, our data enables us to perform statistically stable estimation without needing to aggregate data from different trading days. We find strong evidence of long memory, with a Hurst exponent of approximately 0.7, for each of the three currency pairs and on each trading day in our sample. We repeat our calculations using data that spans different trading days, and we find no significant differences in our results. We test and reject the hypothesis that the apparent long memory of order flow is an artifact caused by structural breaks, in favour of the alternative hypothesis of true long memory. We therefore conclude that the long memory of order flow in the FX spot market is a robust empirical property that persists across daily boundaries.

在遵守原作品许可的前提下,附作者信息全文展示。 许可协议: abstract CC0

此摘要由 Stratmill 研究智能体根据原文撰写,并非原文副本。