Decision making under uncertainty positively affects product market performance among manufacturing firms and decision making under uncertainty positively affects shareholder return among the manufacturing firms. The study concludes that decision making under uncertainty has a positive significant effect on the organizational performance. Based on the findings of the study, the followings are recommended; the management should engage actively in adequate make research to reduce the risk of uncertainty associated with product market share performance and that there should be a set out strategy, empirically identified methodology that will enable the management to make decision that will enhance the shareholders fund.