With the rise of social media, investors have a new tool to measure sentiment in real time. However, the nature of these sources of data raises serious questions about its quality. Since anyone on social media can participate in a conversation about markets -- whether they are informed or not --...

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 study aims to investigate the effect of macroeconomic factors on Palestine and Amman Stock Exchange returns. Also, the study handles the political events in the area and their impact on Palestine and Amman stock markets returns. This study appliedthe macro-econometric model based on...

In this paper we examine the impact of the breakout of the conflict between Russia and Ukraine on the G20 and other selected stock markets using the event study approach. The analysis of the abnormal returns (AR) before and after the launch of the ‘special military operation’ by Russian...

Do equity investors care about pay dispersion and income inequality? We address this question by examining equity markets' reaction and investors' portfolio rebalancing in response to the first-time disclosure by U.S. public companies of the ratio of CEO to median worker pay in 2018. We find...

Market efficiency is examined in three forms: weak form, semi-strong form and strong form and each one deals with a different source of information. 1. Weak form efficient market - the prices of securities fully reflect all historical information and no excess returns can be earned by utilising...

This paper examines stock market reaction to the earnings announcements by taking December 2001 quarter earnings announcement as an event. The study is based on 152 companies having minimum 20 percent foreign holdings. The companies are divided into, good news, bad news and overall portfolios....

We empirically investigate how retail and institutional investor attention is related to the way stock markets process information. With a focus on 360 US stocks in the S&P 500 universe, our results show that higher retail investors' attention around news releases increases the post-announcement...

We analyze, theoretically and empirically, the effect of investor attention on the stock market reaction to innovation announcements and suggest how market-based measures of the economic value of patents can be enhanced. We develop a dynamic model with limited investor attention to show that,...

This study examines the relationship between price movements of target firms' stocks and behaviors of local individual, local institutional, and foreign investors in trading target firms' stocks around mergers and acquisitions announcements in Korea. Results reveal that the average abnormal...