Retail Short Selling and Stock Prices

• 成果类型: Article
• 署名作者: Kelley, Eric K.; Tetlock, Paul C.
• 署名单位: University of Tennessee System; University of Tennessee Knoxville; Columbia University
• 刊物名称: REVIEW OF FINANCIAL STUDIES
• ISSN/ISSBN: 0893-9454
• DOI: 10.1093/rfs/hhw089
• 发表日期: 2017
• 页码: 801
• 关键词: MUTUAL FUND FLOWS; cross-section; Media coverage; return; performance; RISK; restrictions; winners; ORDERS; biases

摘要

Using proprietary data on millions of trades by retail investors, we provide the first large-scale evidence that retail short selling predicts negative stock returns. Aportfolio that mimics weekly retail shorting earns an annualized risk-adjusted return of 9%. The predictive ability of retail short selling lasts for one year and is not subsumed by institutional short selling. In contrast to institutional shorting, retail shorting best predicts returns in small stocks and those that are heavily bought by other retail investors. Our findings are consistent with retail short sellers having unique insights into the retail investor community and small firms' fundamentals.