At the end of January 2021, a group of stocks listed on US stock exchanges experienced sudden surges in their stock prices, which - coupled with high short interest – led to brief short squeeze episodes. We argue that these short squeezes were the result of coordinated trading by retail...

Microblogging forums have become a vibrant online platform to exchange trading ideas and other stock-related information. Using methods from computational linguistics, we analyze roughly 250,000 stock-related microblogging messages, so-called tweets, on a daily basis. We find the sentiment...

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...

This research investigates the predictive capability of sentiment extrapolated from three dictionaries; financial, social media and mood states. Our findings show 1) through the Fama-Macbeth regression method, social media based sentiment measures can be used as risk factors in an asset pricing...

This paper evaluates if sentiment extracted from social media and options volume anticipates future asset return. Using both textual based data and a particular market data derived call-put ratio, between July 2009 and September 2012, this research shows that: 1) features derived from market...

We examine the long-term relationship between signals derived from nine years of unstructured social media microblog text data and financial market developments in five major economic regions. Employing statistical language modeling techniques we construct directional sentiment metrics and link...

Companies have increasingly advocated social media technologies to transform businesses and improve organizational performance. This study scrutinizes the predictive relationships between social media and firm equity value, the relative effects of social media metrics compared with conventional...

This research analyses the link between fundamental information, social media sentiment, and stock returns from 2010 to 2018. We are interested in whether social media sentiment provides additional information to already published fundamental information, such as financial information and...

This study attempts to examine the impact of social media attention and sentiment on IPO pricing. Specifically, by using social media sentiment as a proxy for retail investors’ valuation, I attempt to examine the theoretical predictions in prior studies (Ljungqvist, Nanda and Sigh (2006),...