TY - EJOU AU - Juan, J. Piñeiro-Chousa AU - Ángeles, Á. López-Cabarcos M AU - Ada M, A. Pérez-Pico AU - Marcos, M. Vizcaíno-González TI - Analyzing Microblogging Activity and Stock Market Behavior through Artificial Neural Networks T2 - Journal of Business Accounting and Finance Perspectives PY - 2020 VL - 2 IS - 2 SN - 2603-7475 AB - This paper attempts to analyze the relationship between social network activity (message sentiment) and stock market (trading volume and risk premium). We used Artificial Neural Networks to analyze 87,511 stock-related microblogging messages related to S&P500 Index posted between October 2009 and October 2014. The results obtained suggest that there is a direct relationship between trading volume and negative sentiment, and between risk premium and negative sentiment. The paper concludes with several directions for future research. KW - microblog sentiment KW - S&P500 KW - multi-layer perceptron neural network KW - Stanford CoreNLP Natural Language Processing KW - financial markets DO - 10.35995/jbafp2020010