Initial Investigations of Intra-Day News Flow of S&P500 Constituents

Risks

Jim Kyung-Soo Liew¹ 

[1] Finance Department, The Johns Hopkins Carey Business School Baltimore, MD 21202, USA

关键词: TRNA;    news sentiments;    intra-day prices;    S&P500;   

DOI  :  10.3390/risks2020089

来源: mdpi

【 摘 要 】

In this work, we examine Thomas Reuters News Analytics (TRNA) data. We found several fascinating discoveries. First, we document the phenomenon that we label “Jam-the-Close”: The last half hour of trading (15:30 to 16:00 EST) contains a substantial and statistically significant amount of news sentiment releases. This finding is robust across years and months of the year. Next, upon further investigations we found that the “novelty” score is on average 0.67 in this period vs. 2.09 prior to midday. This indicates that “new” news is flowing at a rapid pace prior to the close. Finally, we discuss the implication of such phenomena in the context of existing financial literature.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.