AR RASYID, M. A. F. Post-Event Analysis of The Influence of President Donald Trump’s Tweet Sentiment on the Abnormal Returns, Trading Volume Activity, and Volatility of S&P 500 Companies. International Journal of Economics Development Research (IJEDR), [S. l.], v. 6, n. 6, p. 3106–3129, 2025. DOI: 10.37385/ijedr.v6i6.8273. Disponível em: https://journal.yrpipku.com/index.php/ijedr/article/view/8273. Acesso em: 28 sep. 2025.