Equality investment strategy evaluation during the financial crisis: Using TOPSIS approach

During the financial crisis time, fear has taken over the mood of investors. There are so many uncertainties during a crisis. This time, the financial crisis came with a credit crunch. At such time, the contrarian investors were looking for better investment objectives which may increase profits in the future by mean reversion effect. But how can they be confident that the chosen investment objectives can survive the credit crunch or the crisis. The study addressed a case of a Taiwanese bank selecting an appropriate combination of equalities by Markowitzʹs Mean-Variance Method in portfolio management to deal with market risk in the crisis. The Technique for order preference by similarity to ideal solution method (TOPSIS) was also used to deal with credit risk during the credit crunch in this financial crisis. In setting the criteria weight setting and selecting the best strategy, the opinions of experts were fully considered - from bank counselors in academia and the members of the bank asset and liability management committee who are management from the Loan, Business, and Risk management departments, who are all experienced in their professional fields. This study proved that financial institutions could use TOPSIS in-group decision in the investment sector.