Qadir, A.B.E.-D. et al. 2022. Comparing portfolios built according to the cutting edge model with portfolios built according to linear programming, an applied study in some companies listed in the DAX30 index. Al-Ghary Journal of Economic and Administrative Sciences. 18, 00 (Nov. 2022), 1961–1984. DOI:https://doi.org/10.36325/ghjec.v18i00.15175.