Propounding a Model for Portfolio Selection in Stock Exchange by Using of MCDM (Case Study: 50 Better Companies)

Document Type : Original Article


1 Associate Professor, Shahid Beheshti University.

2 PhD student, Tehran University.


 Decision making about the selection of shares for buying and selling for more return acquisition is the most important subject for investors in stock exchange market. Many of investors buy shares based on market gossips and informal news.As each of the existing models such as technical method, fundamental method, Markowitz model, sharp model and arbitrage model has it's own problem in use, this research gives a model for choosing portfolio regarding effective indices on investors decision making by composing the TOPSIS and GAHP techniques. A questionnaire was prepared by using Delphi method and was distributed to 30 persons of the experts of stock exchange market to identify significant indices for investors. Economical indices for choosing the industry including selling growth, profit margin growth, average return, currency rate, basic metals price volatility, industrial competitive advantages, economical growth and recession and economical indices for share selection contain EPS, DPS, P/E, share price, share return, operating profit ratio, corporation management, corporation size, capital volume and technology were achieved.Necessary information and relevant amounts to each of indices were gathered from archive unit and internet site of securities and exchange organization and financial statement of companies. Then by TOPSIS technique and weighting by Shannon entropy and group AHP techniques in changing qualitative to quantitative indices (which is one of the most advantages of this method) decision matrix was composed and the priority of industry and share identified. Five superior industries were Banking, Credit and other money institutes, Investment brokers, Foods and Beverages products except candy  and sugar, coal extraction and Other Nonmetallic mineral products.


1. Eslami Bidgoli, Gholamreza-Talangi, Ahmad (1999). "Ideal Planning Models in Optimal Portfolio Selection" Financial Research.
2. Eslami Bidgoli, Gholamreza-Heibati, Farshad (1995). "Portfolio Management Using the Index Model" Financial Research.
3. Asgharpour, Mohammad Javad (2004). "Multi-criteria Decision Making", University of Tehran Press, Third Edition.
4. Bagherzadeh Saeed (2005). "Factors Influencing Stock Returns in Tehran Stock Exchange" Financial Research, No. 19.
5. Jannani, Mohammad Hassan (2000). "Investigation of the Cohesive Relationship between Total Stock Price Index in Tehran Stock Exchange and Macroeconomic Variables". Islamic Azad University, Science Research Branch.
6. Raei, Reza-Chavoshi, Kazem (2003). "Forecasting Stock Returns in Tehran Stock Exchange" Journal of Financial Research, No. 15.
7. Clock, Thomas (1999). "Decision Making for Managers", Translated by: Dr. Tawfiq, Publications of Industrial Management Organization.
8. Ghodsipour, Seyed Hassan (2005). "The Analytical Hierarchy Process", Amirkabir University of Technology Publications, Fourth Edition.
9. Mohammadi, Shapour (2004). "Technical Analysis in Tehran Stock Exchange", Journal of Financial Research.
10. Momeni, Mansour (2006). "A New Topic in Operations Research", University of Tehran Management School Press
11. Mehregan, Mohammad Reza (2004). "Advanced Operational Research", University Book Publishing.
12. Deng Hepu, Chung-Hsing Yeh, Robert J. Willis (2000), "Inter-company comparison using modified TOPSIS with objective weights", Computers and Operations Research, 27, 963-973.
13. Hwang, Ching-Lai, yoon, Kworgsun, (1980), Multiple attribute decision making methods and applications. A state of the Art Survey. Springer Verlag, Berlin.
14. Lee, Sang M. and Lerro A.J. (1973), "Optimizing the Portfolio Selection for Mutual Funds", The Journal of Finance
15. Miller, Merton H. (1999) The History of Finance The Journal of Portfolio Management
16. Mulvey, John M., Rosenbaum, Daniel P. and Shetty Bata., (1997), "Strategic Financial Risk Management and Operations Research", European Journal of Operations Research.
17. Sarant Marshall and Levy, Haim, (1984), "portfolio and investment selection: theory and practice", Prantic-Hall
18. Schwager, Jack D (1996) Schwager on Futures: Technical Analysis, Published by John Wiley and Sons
19. Sharp, Wiliam F. (1978), "Invesments", Prantice - Hall, Englewood Cliffs.
20. Spronk, Jaap. And Hallerbach, Winfried. (1997) "Financial Modeling: Where to Go? With an Illustration for Portfolio Management" European Journal of Operational Research.