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Econometrics 2018, 6(1), 5; https://doi.org/10.3390/econometrics6010005

Assessing News Contagion in Finance

Department of Economics and Management Science, University of Pavia, Pavia, 27100 Lombardy, Italy
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Received: 29 May 2017 / Revised: 18 December 2017 / Accepted: 25 January 2018 / Published: 3 February 2018
(This article belongs to the Special Issue Big Data in Economics and Finance)
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Abstract

The analysis of news in the financial context has gained a prominent interest in the last years. This is because of the possible predictive power of such content especially in terms of associated sentiment/mood. In this paper, we focus on a specific aspect of financial news analysis: how the covered topics modify according to space and time dimensions. To this purpose, we employ a modified version of topic model LDA, the so-called Structural Topic Model (STM), that takes into account covariates as well. Our aim is to study the possible evolution of topics extracted from two well known news archive—Reuters and Bloomberg—and to investigate a causal effect in the diffusion of the news by means of a Granger causality test. Our results show that both the temporal dynamics and the spatial differentiation matter in the news contagion. View Full-Text
Keywords: behavioural finance; financial news; structural topic model; granger causality behavioural finance; financial news; structural topic model; granger causality
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Cerchiello, P.; Nicola, G. Assessing News Contagion in Finance. Econometrics 2018, 6, 5.

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