客户动量及其被发现后的衰减
文章 arXiv papers · 作者: Mykola Pinchuk
总结
本文研究客户动量这一收益模式,即一家公司的表现与其客户此前的表现呈正相关。文中指出,这种效应不同于传统的价格动量和盈利动量,但部分与小盘股和大盘股之间的领先滞后效应有关。
报告的检验发现,在原始样本中,多空投资组合收益在统计和经济意义上均显著。在该效应为人所知之后,其幅度有所减小,且不再具有统计显著性。这一模式与投资者利用该机会导致其缩小的解释相符,但摘要并未证实利用行为导致了这种衰减。证据基于历史投资组合和因子模型分析;所提供的描述未给出样本日期、实施成本,也未提供评估该策略在交易摩擦后是否仍可用所需的细节。
核心观点
- 客户动量将一家公司的收益与其客户过去的收益联系起来。
- 论文报告称,价格动量或盈利动量无法解释客户动量。
- 小盘股与大盘股之间的领先滞后效应可以解释这种模式的部分成因。
- 报告的效应在被发现后减弱,并失去统计显著性。
- 发现后的衰减与投资者利用该效应的解释相符,但并不能证明这一解释。
标签
全文
# Customer Momentum # Customer Momentum This paper examines customer momentum, defined as a positive relationship between a firm's returns and past returns of its customers. I confirm previous evidence (Cohen and Frazzini 2008) that customer momentum is both statistically and economically significant. Long-short equally-weighted (value-weighted) decile portfolio generates a monthly return of 122 (106) basis points and a t-statistic above 4 (2.8) with respect to Fama-French factor models. The paper reports that customer momentum neither explains nor is explained by price momentum and earnings momentum. Customer momentum is partially driven by the lead-lag relationship between small and large stocks. I find that in the post-discovery sample, customer momentum has a smaller magnitude and loses statistical significance. The results are consistent with the hypothesis that after its discovery, customer momentum decreased due to exploitation by investors.
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