Why Don't We Agree? Evidence from a Social Network of Investors

• 成果类型: Article
• 署名作者: Cookson, J. Anthony; Niessner, Marina
• 署名单位: University of Colorado System; University of Colorado Boulder
• 刊物名称: JOURNAL OF FINANCE
• ISSN/ISSBN: 0022-1082
• DOI: 10.1111/jofi.12852
• 发表日期: 2020
• 页码: 173-228
• 关键词: cross-section; SHORT-SALES; INFORMATION; opinion; overconfidence; DISAGREEMENT; attention; volume; TRADE; RISK

摘要

We study sources of investor disagreement using sentiment of investors from a social media investing platform, combined with information on the users' investment approaches (e.g., technical, fundamental). We examine how much of overall disagreement is driven by different information sets versus differential interpretation of information by studying disagreement within and across investment approaches. Overall disagreement is evenly split between both sources of disagreement, but within-group disagreement is more tightly related to trading volume than cross-group disagreement. Although both sources of disagreement are important, our findings suggest that information differences are more important for trading than differences across market approaches.