Alberta Investment Management Corporation (AIMCo) is one of Canada's largest institutional investment managers, handling approximately $160 billion in assets on behalf of Alberta public sector pension plans, the Alberta Heritage Savings Trust Fund, and other provincial endowments. AIMCo invests in stocks, bonds, real estate, and infrastructure projects worldwide to generate returns that help fund pensions for teachers, nurses, government employees, and other public sector workers. How well AIMCo's investments perform affects the security of these pension plans and can influence whether contribution rates need to increase. AIMCo has faced controversy over some investment decisions and its governance structure, highlighting the challenges of managing public money for long-term benefit.