Oh What a Beautiful Morning! Diurnal InfIuences on Executives and Analysts: Evidence from Conference Calls

• 成果类型: Article
• 署名作者: Chen, Jing; Demers, Elizabeth; Lev, Baruch
• 署名单位: State University of New York (SUNY) System; University at Buffalo, SUNY; University of Lausanne; New York University
• 刊物名称: MANAGEMENT SCIENCE
• ISSN/ISSBN: 0025-1909
• DOI: 10.1287/mnsc.2017.2888
• 发表日期: 2018
• 页码: 5899-5924
• 关键词: CONFERENCE CALLS; Textual analysis; management communication; investor relations; circadian rhythms; diurnal variations; Abnormal returns; behavioral economics

摘要

This study provides novel evidence that expert economic agents' work-related activities are systematically influenced by the time of day. We use archival data derived from time-stamped quarterly earnings conference calls together with linguistic algorithms to measure and track the moods of executives and analysts at different times of the day. The evidence indicates that the tone of conference call discussions deteriorates markedly over the course of the trading day, with both analysts' and executives' moods becoming more negative as the day wears on. Capital market pricing tests reveal that the time-of-day-induced negative tone leads to temporary stock mispricings. Our findings are relevant because the diurnal variations in behavior documented in the context of quarterly earnings calls are likely to extend across other important corporate communication, decision making, and performance situations, leading to potentially significant economic consequences.