BUILD AN EFFICIENT INVESTMENT PORTFOLIO USING THE WILLIAM RATIO (EMPIRICAL STUDY) IN IRAQ STOCK EXCHANGE: BUILD AN EFFICIENT INVESTMENT PORTFOLIO USING THE WILLIAM RATIO (EMPIRICAL STUDY) IN IRAQ STOCK EXCHANGE. Iraqi Journal of Market Research and Consumer Protection, [S. l.], v. 12, n. 1, p. 1–13, 2020. Disponível em: https://jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/184.. Acesso em: 3 may. 2024.