The tremendous rise of artificial intelligence and the use of ChatGPT enables the unprecedented rapid spread of various messages. The fundamental problem at present is the spread of false, unverified news and information known as fake news. This great challenge of the modern world causes...

We study the effect on stock volatility and turnover of coverage by traditional news media and social media. We find that coverage by traditional news media predicts decreases in subsequent volatility and turnover, but coverage by social media predicts increases in volatility and turnover. These...

Public information arrivals and their immediate incorporation in asset price is a key component of semi-strong form of the Efficient Market Hypothesis. In this study, we explore the impact of public information arrivals on cryptocurrency market via Twitter posts. The empirical analysis was...