可预测性
收益
库存(枪支)
计量经济学
金融经济学
经济
度量(数据仓库)
收益反应系数
业务
会计
计算机科学
数学
工程类
统计
数据挖掘
机械工程
作者
Paul C. Tetlock,Maytal Saar‐Tsechansky,Sofus A. Macskassy
标识
DOI:10.1111/j.1540-6261.2008.01362.x
摘要
ABSTRACT We examine whether a simple quantitative measure of language can be used to predict individual firms' accounting earnings and stock returns. Our three main findings are: (1) the fraction of negative words in firm‐specific news stories forecasts low firm earnings; (2) firms' stock prices briefly underreact to the information embedded in negative words; and (3) the earnings and return predictability from negative words is largest for the stories that focus on fundamentals. Together these findings suggest that linguistic media content captures otherwise hard‐to‐quantify aspects of firms' fundamentals, which investors quickly incorporate into stock prices.
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