This paper introduces a new information density indicator to provide a more comprehensive understanding of price reactions to news and, more specifically, to the sources of jumps in financial markets. Our information density indicator, which measures the abnormal amount of noisy “ticker”...

Material news events can be potentially important sources of jumps in stock returns. We collect 21 million news articles associated with more than 9,000 publicly-traded companies and use textual analyses to derive measures to summarize the news. We find that stock return jumps (including...

This paper investigates the direction of information flow between world stock markets during the recent financial crisis by conducting Granger causality tests in a three variables system. We employ daily rates of return for three representative stock market indices: S&P 500 for the US, BET-C for...