Defined Contribution Institutional Investment Association (DCIIA) | 5,817 followers on LinkedIn. Dedicated to enhancing retirement security | Founded in 2010, the Defined Contribution Institutional Investment Association (DCIIA) is a non-profit association dedicated to enhancing the retirement security of America’s workers. To do this, DCIIA fosters a dialogue among the leaders of the defined contribution community who are passionate about improving retirement outcomes. DCIIA’s 175+ member organizations include investment managers, consultants and advisors, law firms, record keepers, insurance companies, data providers, and others who are collectively committed to the best interests of plan participants.