This paper evaluates the role of a corporate network in spreading news and in particular shows how it affects prices. We build daily corporate news network using companies of the STOXX 50 index as nodes; the weights of the edges are the number of news items sharing common topics between...

We explored in this study the impact of social media on the viewership of mass media news in the stock market. We argue that the popularity of a topic on social media can affect the viewership of news articles the next day on this same topic. Moreover, the detailed characteristics of how social...

While investors in financial markets have access to information from both mass media and social media, trading platforms that curate and provide this information have little to go by in terms of understanding their relative value. This research note compares social media with mass media in the...

This paper analyzes the relationship between assets return, volatility and the centrality indicators of a corporate news network. We build a sequence of daily corporate news network for the period 2005-2011 using companies of the STOXX 50 index as nodes; the weights of the edges are the sum of...