Yunus Social Business (YSB) is a venture fund that turns philanthropic donations into investments in sustainable social businesses. Founded in 2011, with headquarters in Frankfurt and Berlin, YSB's mission is to expand the social business model pioneered by Prof. Muhammad Yunus through the Yunus Center in Bangladesh, to countries throughout the developing world. The primary goal is to utilise the tools developed in the business world, to create financially self-sustaining companies dedicated to reducing poverty. A secondary goal is to finance social businesses that directly contribute to achieving the UN Sustainable Development Goals.