ZHANG, Xiaoxuan. Portfolio theory in investment decision making: Evidence from NVIDIA and Costco. Highlights in Business, Economics and Management, [S. l.], v. 39, p. 186–194, 2024. DOI: 10.54097/9htb3441. Disponível em: https://drpress.org/ojs/index.php/HBEM/article/view/23483. Acesso em: 26 aug. 2026.