Hardiyanti SE, Widyaningsih IU. COMPARATIVE ANALYSIS OF STOCK PORTFOLIOS PERFORMANCE IN INDONESIA, MALAYSIA, AND SINGAPORE. MSR [Internet]. 2026 May 30 [cited 2026 Jun. 9];5(2):70-89. Available from: https://www.managementscienceresearchjournal.com/index.php/msr/article/view/219