We analyze methods for selecting topics in news articles to explain stock returns. We find, through empirical and theoretical results, that supervised Latent Dirichlet Allocation (sLDA) implemented through Gibbs sampling in a stochastic EM algorithm will often overfit returns to the detriment of...

This paper studies the interplay between environmental performance and financial valuation of firms in Latin America and the Caribbean. We provide insights into how environmental considerations are integrated into financial decision-making and investor behavior by analyzing the stock market...

This paper studies the interplay between environmental performance and financial valuation of firms in Latin America and the Caribbean. We provide insights into how environmental considerations are integrated into financial decision-making and investor behavior by analyzing the stock market...

Under the influence of the western world, the solar New Year celebration seems to have fascinated everyone in Taiwan with the lunar New Year festivity showing much less vigor. This paper examines the impact of the solar and lunar New Years on the stock market of Taiwan, showing that the lunar...

We analyze the earnings information and stock prices of S&P500 firms and find that investors following S&P500 stocks (i) respond more to pro forma earnings than to GAAP earnings, (ii) respond to an emphasis on pro forma earnings, and (iii) are fixated on pro forma earnings. We provide the first...

By means of Event Study, Panel Data Regression and Feasible Generalized Least Squares, we discuss the influence of uncertainty of information on the Post-Earnings Announcement Drift. We find that there are not significant differences between the H-share financial statements and the A-share...

Using a score provided by Thomson Reuters to measure the tone of news articles, I construct a weekly measure of qualitative information. The measure predicts future returns over the next 13 weeks and mitigates short-term reversal in the weekly momentum strategy. A portfolio that takes a long...

Efficient Market Hypothesis states that financial markets react instantaneous and unbiased to new information. However, in the last decades empirical researches revealed some anomalies in investors reactions to the events that caused shocks on the financial markets. There are two main hypotheses...

This study investigates the relationship between the news effect and the abnormal returns. The content analysis is applied to quantify the public news related to the listed stocks in the Taiwan Stock Market. By Referring to Demers and Vega (2011), this study constructs the net optimism of public...