Optimal Portfolio Construction Using Modern Portfolio Theory and Sharpe’s Single Index Model: Evidence from NSE Listed Companies. International Journal of Economics and Business Management Research, [S. l.], v. 2, n. 1, p. 48–53, 2026. DOI: 10.64137/31079423/IJEBMR-V2I1P106. Disponível em: https://internationaljournalssrp.org/index.php/ijebmr/article/view/246. Acesso em: 30 apr. 2026.