Maitham Rabie Hadi and Zainab Shallal Eakaar 2024. The Estimation risk and its impact in building the optimal portfolio of stock market model framework: Analytical study in the Iraq Stock Exchange. Iraqi Journal for Administrative Sciences. 12, 49 (Nov. 2024), 122–65. DOI:https://doi.org/10.71207/ijas.v12i49.2662.