Study—Just 20 percent of philanthropic “big bets” ($10 million-plus) went to social change causes; the other 80 percent was institutional giving—universities, hospitals and cultural institutions: http://www.forbes.com/sites/kerryadolan/2015/11/19/the-philanthropists-dilemma-why-donors-biggest-gifts-arent-going-to-the-causes-they-hold-most-dear/