Every day new research comes into the research arena with the application of fuzzy logic. Fuzzy is hot idea in the today market. The superi- ority of fuzzy logic rests on its application. It changes its mode of application according to the research area. In decision making process, it acts as a predom- inant tool. Here we are going to apply a new inventory in Fuzzy logic called Q-Fuzzy in the investment decision making. In this paper, how to make an optimal investment decision using Q-Fuzzy has been carried out. © 2015 Academic Publications, Ltd.