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区分因子动量与股票动量

文章 arXiv papers · 作者: Antoine Falck et al.

总结

本研究考察因子动量是否包含股票动量之外的收益信息。研究使用先前文献记录的72个因子样本,首先复现了方向性和横截面因子动量的证据。随后,研究采用跨越检验,控制股票动量和因子敞口,以评估因子动量是否仍然具有独立性。

报告结果显示,在这些控制条件下,只有纳入最近一个月收益的实现方式才具有统计显著的夏普比率。本文还提出一种理论解释,将短滞后股票均值回归与较长滞后股票动量结合起来,同时考虑不同滞后期的股票与因子动量,以及它们盈亏序列之间的共同变动。摘录未提供因子定义、样本日期、检验设定或稳健性结果,因此评估发现的幅度或普遍性所需细节有限。其结论具体针对短滞后实现方式。

核心观点

  • 本研究使用先前文献记录的72个因子,比较因子动量与股票动量。
  • 报告称,方向性和横截面实现方式中都存在因子动量。
  • 控制股票动量和因子敞口后,只有纳入最近一个月时,夏普比率才仍具统计显著性。
  • 所提模型结合了短滞后股票均值回归和较长滞后股票动量。
  • 文中称,股票和因子动量的盈亏序列会在不同期限上自然共同变动。

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# Is Factor Momentum More than Stock Momentum?


# Is Factor Momentum More than Stock Momentum?









Yes, but only at short lags. In this paper we investigate the relationship between factor momentum and stock momentum. Using a sample of 72 factors documented in the literature, we first replicate earlier findings that factor momentum exists and works both directionally and cross-sectionally. We then ask if factor momentum is spanned by stock momentum. A simple spanning test reveals that after controlling for stock momentum and factor exposure, statistically significant Sharpe ratios only belong to implementations which include the last month of returns. We conclude this study with a simple theoretical model that captures these forces: (1) there is stock-level mean reversion at short lags and momentum at longer lags, (2) there is stock and factor momentum at all lags and (3) there is natural comovement between the PNLs of stock and factor momentums at all horizons.

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。