MacArthur Foundation

MacArthur Foundation is the 12th-largest private foundation in the United States. Based in Chicago, the Foundation makes grants and impact investments to support non-profit organizations in Chicago, across the U.S., and in approximately 50 countries. MacArthur reports that it has awarded more than US $6.5 billion since its first grants in 1978. According to the Foundation, it has an endowment of $6.9 billion and provides approximately $255 million annually in grants and impact investments.

The Foundation's stated aim is to support "creative people, effective institutions, and influential networks building a more just, verdant, and peaceful world." MacArthur's current grant-making priorities include mitigating climate change, reducing jail populations, decreasing nuclear threats, supporting nonprofit journalism, and funding local priorities in its hometown of Chicago. The MacArthur Fellows Program, also referred to as "genius grants", awards $625,000 no-strings-attached grants annually to about two dozen creative individuals in diverse fields. The Foundation's 100 & Change competition awards a $100 million grant every three years to a single proposal that addresses a critical problem of our time.