Semi-Strong Market Efficiency and Post-COVID Investor Reactions to Dividend Announcements: Evidence from Developed Markets. Advance Journal of Econometrics and Finance, [S. l.], v. 4, n. 1, p. 555–574, 2026. DOI: 10.63075/ws00zy48. Disponível em: https://www.ajeaf.com/index.php/Journal/article/view/235. Acesso em: 9 may. 2026.