This study analyzes whether shareholder activism raises the value of their equity-owned companies to maximize the collection for public funds through KDIC case, as we were motivated by the fact that a lax supervision of shareholders over the equity-owned companies exercises a bad influence on the recovery of their investment. Although KDIC has provided financial support to the troubled financial institutions as much as $110.9 billions since 1997, it has just recovered 43% of its principal up to now, especially KR&C which is a subsidiary of KDIC has not received $7.7 billions out of $18 billions yet. Therefore it is much important for KDIC and KR&C to make their equity-owned companies raise the value in order to achieve the maximum recovery of public funds. However as the process of exercising shareholder's rights has not been concretely established, KDIC does not make the best use of its authority to manage its property. Thus here we propose practical ways for KDIC to enhance the efficiency of exercising shareholder's rights. If it has a majority shareholding in the equity-owned company, then 1) constructing detailed guidelines for making decisions regarding voting rights, 2) cooperating with outside experts in shareholders service, 3) planning to strengthen outside directors' activities, else 1) strengthening channels of communication through a shareholders council, 2) exercising a right of shareholder's proposal, a derivative suit, and minority shareholders' rights, 3) utilizing the electronic voting.