AI INVESTOR ATTENTION, INFORMATION SHOCKS, AND EQUITY RETURN DYNAMICS: FIRM-LEVEL EVIDENCE FROM THE ARTIFICIAL INTELLIGENCE ECOSYSTEM. Oeconomia Copernicana, [S. l.], v. 17, n. 1, p. 216–239, 2026. Disponível em: https://oeconomiacopernicana.com/index.php/OECO/article/view/135.. Acesso em: 27 sep. 2026.