Muhammad Habibullah Nur Ihsan, Muhammad Silmy Amjad, Bima Andhika Fernanda and Mohamad Bastomi 2023. Stock Investment Analysis Skills And Understanding Efficient Portfolio. International Journal of Economic Research and Financial Accounting. 1, 2 (Jan. 2023). DOI:https://doi.org/10.55227/ijerfa.v1i2.29.