{"title":"When can the market identify old news?","authors":"Anastassia Fedyk , James Hodson","doi":"10.1016/j.jfineco.2023.04.008","DOIUrl":null,"url":null,"abstract":"<div><p>What drives the puzzle of market reactions to old news? Motivated by theories of correlation neglect, we conduct an experiment on finance professionals and show that even sophisticated investors have difficulty identifying old information that <em>recombines</em> content from multiple sources. We evaluate the market implications of this mechanism using a unique dataset of 17 million news articles from the Bloomberg terminal. Recombination of old information prompts larger price moves and subsequent reversals than direct reprints. This effect persists across news sentiment, ambiguity, and investor attention. Furthermore, while overall reactions to old information decline over time, differential reactions to recombinations increase.</p></div>","PeriodicalId":51346,"journal":{"name":"Journal of Financial Economics","volume":"149 1","pages":"Pages 92-113"},"PeriodicalIF":10.4000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Financial Economics","FirstCategoryId":"96","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304405X23000685","RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BUSINESS, FINANCE","Score":null,"Total":0}
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Abstract
What drives the puzzle of market reactions to old news? Motivated by theories of correlation neglect, we conduct an experiment on finance professionals and show that even sophisticated investors have difficulty identifying old information that recombines content from multiple sources. We evaluate the market implications of this mechanism using a unique dataset of 17 million news articles from the Bloomberg terminal. Recombination of old information prompts larger price moves and subsequent reversals than direct reprints. This effect persists across news sentiment, ambiguity, and investor attention. Furthermore, while overall reactions to old information decline over time, differential reactions to recombinations increase.
期刊介绍：
The Journal of Financial Economics provides a specialized forum for the publication of research in the area of financial economics and the theory of the firm, placing primary emphasis on the highest quality analytical, empirical, and clinical contributions in the following major areas: capital markets, financial institutions, corporate finance, corporate governance, and the economics of organizations.
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