10.51847/8yhe4jwTAN
Kaveh Mehrani, Amirmehdi Mirshahvalad, Ebrahim Abbasi · Time to knit · 2000
The aim of this research is optimization portfolio by using black hole algorithm in Tehran security exchange and comparing with Markowitz. In this research, the semi variance approach is used due to its ability in measuring downside risk and it is tried to reduce the appropriate portfolio risk. This research is conducted in the period 2012 to 2017.